JP3698701B2 - Establishing calls on intranets and external networks via DMZ - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to communication between an intranet and an external network, and more particularly to establishing a call between an intranet having a firewall and an external network.
[0002]
BACKGROUND OF THE INVENTION
Telephone communication between two personal computers (PCs) via a local area network (LAN) is known. In addition, VoIP (Voice over IP) communication that provides Internet telephone communication between two PCs via the Internet is also known.
[0003]
In response to a connection request from the Internet, a server in the DMZ (DeMilitarized Zone) sends a connection request to a terminal on the intranet through a firewall. Intec Web and Genome Informatics Co., Ltd. (INTEC Web) and Genome Information Corporation (H323 Proxy Server), [October 23, 2002 search] Internet <URL: http: www3.noc.intec.co.jp/products/H323Proxy/> (Non-Patent Document 1), etc. Are known. However, if access from such a server to a terminal on the intranet is permitted, a malicious user may illegally access a device on the intranet.
[Non-Patent Document 1]
Document “H323 ProxyServer” of INTEC Web and Informatics Corporation, [October 23, 2002 search] Internet <URL: http: www3.noc.intec.co .jp / products / H323Proxy / ＞
[0004]
There is a need for the implementation of VoIP communication between a terminal connected to an intranet having a firewall and a terminal connected to the Internet. However, it is not known how to implement VoIP communication between such two terminals while effectively functioning a firewall necessary for security.
[0005]
The inventors recognize that in a DMZ between an intranet and the Internet, VoIP communication between the two terminals can be realized by terminating the calls of both the intranet terminal and the Internet terminal and associating both calls. did.
[0006]
One object of the present invention is to realize call establishment between a terminal connected to an intranet and a terminal connected to an external network.
[0007]
Another object of the present invention is to realize multimedia communication between a terminal connected to an intranet and a terminal connected to an external network.
[0008]
Still another object of the present invention is to realize call establishment between a terminal connected to an intranet and a terminal connected to an external network in a secure manner.
[0009]
  According to one aspect of the present invention, an information processing device in a DMZ can be connected to an external network and another device that can be connected to an intranet.And in response to a signal received from the communication management means and the external network, a first link is established between the other device and the first management representing the established first link. A first configured to provide information to the communication management means and send a signal on the established first link based on a non-Internet protocol to establish a call with the other device; And a second link for data communication with the other device on the established call by receiving the first management information from the communication management means and the communication management means. Providing second management information representative of the second link to the communication management means, and second means for transmitting or receiving data on the established second link based on a non-Internet protocol; It has. The communication management means, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. Information to associate with.
[0010]
  According to another feature of the present invention, the information processing apparatus in the DMZ can be connected to an external network and another apparatus connectable to the intranet.The communication management unit and the external network establish a connection, establish a first link associated with the connection with the other device, and represent the established first link. To the communication management means and to send a signal on the established first link based on a non-Internet protocol to establish a call with the other device. Receiving the first management information from the first means and the communication management means, establishing a second link for data communication with the other device on the established call; Second management information representing the established second link is supplied to the communication management means, data is transmitted or received on the established connection based on the Internet protocol, and the authentication is confirmed. And comprising a second means for transmitting or receiving data based on the non-Internet protocol in a second link that is. The communication management means, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. Information to associate with.
[0011]
  According to still another feature of the present invention, the information processing apparatus can be connected to another apparatus in the DMZ and an intranet.In response to the signal received from the communication management means and the intranet, the first link is established between the other device and the first management information representing the established first link is stored. A first configured to supply to the communication management means and to send a signal on the established first link based on a non-Internet protocol to establish a call with the other device; Receiving a first management information from the communication means and the communication management means to establish a second link for data communication between the other device on the established call and the established Second means for supplying second management information representing the second link to the communication management means and transmitting or receiving data on the established second link based on a non-Internet protocol; It is. The communication management means, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. Information to associate with.
[0012]
  According to still another feature of the present invention, the information processing apparatus can be connected to another apparatus in the DMZ and an intranet.A first link associated with the connection is established between the communication management means and the intranet, the first link associated with the connection is established, and the first link representing the established first link is established. Configured to provide management information to the communication management means and to send a signal on the established first link based on a non-Internet protocol to establish a call with the other device. Receiving the first management information from the first means and the communication management means, establishing a second link for data communication with the other device on the established call, and establishing the second link Supply the second management information representing the second link made to the communication management means, send or receive data on the established connection based on the Internet protocol, and establish it And second means for transmitting or receiving data based on the second non-Internet Protocol on the links, which comprises a. The communication management means, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. Information to associate with.
[0013]
  According to still another feature of the present invention, a program (which may be stored in a storage medium) is used for an information processing apparatus in a DMZ that can be connected to an external network and another apparatus that can be connected to an intranet. It is done. The program establishes a first link with the other device in response to a signal received from the external network;Storing first management information representative of the established first link in a storage means, and transmitting another signal on the established first link based on a non-Internet protocol to the other device Establishing a call with the other device, establishing a second link for data communication with the other device on the established call based on the first management information; The second management information representing the established second link is stored in the storage means, and the call is made based on the first management information and the second management information in the storage means. Ensuring that information associating the established first link with the established second link is maintained for a maintained period;Transmitting or receiving data based on a non-Internet protocol over the established second link.
[0014]
  According to still another feature of the present invention, a program (which may be stored in a storage medium) is used for an information processing apparatus in a DMZ that can be connected to an external network and another apparatus that can be connected to an intranet. It is done. The program establishes a connection on the external network and the other device.Establishing a first link associated with the connection; storing first management information representing the established first link in a storage means; and non-determining on the established first link. Sending a signal based on the Internet protocol to establish a call with the other device, and with the other device on the established call based on the first management information; A step of establishing a second link for data communication between them, and storing second management information representing the established second link in the storage means, wherein the first management information is stored in the storage means And the second management information to maintain information that associates the established first link with the established second link for the duration of the call. And flop, sending or receiving data based on the Internet Protocol on the established connection, based on the non-Internet protocol at the established second linkTransmitting or receiving data is operable to perform.
[0015]
  According to still another feature of the present invention, a program (which may be stored in a storage medium) is used in an information processing apparatus that can be connected to another apparatus in the DMZ and an intranet. The program responds to signals received from the intranet and communicates with the other device.Establishing a first link; storing first management information representing the established first link in a storage means; and based on a non-Internet protocol on the established first link Sending a signal to establish a call with the other device and data communication with the other device on the established call based on the first management information Establishing a second link for use, and storing second management information representing the established second link in the storage means, in the storage means, the first management information and the second And maintaining information associating the established first link with the established second link for a period of time during which the call is maintained based on the management information ofTransmitting or receiving data based on a non-Internet protocol over the established second link.
[0016]
  According to still another feature of the present invention, a program (which may be stored in a storage medium) is used in an information processing apparatus that can be connected to another apparatus in the DMZ and an intranet. The program establishes a connection between the intranet and the other device.Establishing a first link associated with the connection; storing first management information representing the established first link in a storage means; and non-determining on the established first link. Sending a signal based on the Internet protocol to establish a call with the other device, and with the other device on the established call based on the first management information; A step of establishing a second link for data communication between them, and storing second management information representing the established second link in the storage means, wherein the first management information is stored in the storage means And the second management information to maintain information that associates the established first link with the established second link for the duration of the call. And flop, sending or receiving data based on the Internet Protocol on the established connection, based on the established second non-Internet Protocol on the linkTransmitting or receiving data is operable to perform.
[0017]
  According to still another feature of the present invention, connection to an external network and an intranet is possible.Can be connected to another device,In DMZIn information processing equipmentThe communication method establishes a first link with the other device in response to a signal received from the external network;Storing first management information representative of the established first link in a storage means, and transmitting another signal on the established first link based on a non-Internet protocol to the other device And establishing a second link for data communication with the other device on the established call based on the first management information; and The second management information representing the established second link is stored in the storage means, and the call is made based on the first management information and the second management information in the storage means. Ensuring that information associating the established first link with the established second link is maintained for a maintained period;Transmitting or receiving data based on a non-Internet protocol over the established second link.
[0018]
  According to still another feature of the present invention, a communication method in an information processing device connectable to another device in an DMZ and an intranet is performed between the other device in response to a signal received from the intranet.Establishing a first link; storing first management information representing the established first link in a storage means; and based on a non-Internet protocol on the established first link Sending a signal to establish a call with the other device and data communication with the other device on the established call based on the first management information Establishing a second link for use, and storing second management information representing the established second link in the storage means, in the storage means, the first management information and the second And maintaining information associating the established first link with the established second link for a period of time during which the call is maintained based on the management information ofTransmitting or receiving data based on a non-Internet protocol over the established second link.
[0019]
According to the present invention, it is possible to realize call establishment and multimedia communication between a terminal connected to an intranet and a terminal connected to an external network while ensuring the security of the intranet.
[0020]
In the drawings, like reference numbers indicate like or similar elements.
[0021]
[0022]
Preferred Embodiment of the Invention
FIG. 1 shows a system configuration including an intranet 140 connected to a server and a terminal and an external network 40 connected to an external terminal according to the present invention. The intranet 140 is a local area network (LAN) in the call center 10. The external network 40 is typically the Internet and may include ISDN, PSTN, ADSL or cable television network.
[0023]
In the call center 10, a firewall (FW) 80 is connected between the DMZ 100 and the external network 40. The intranet 140 is connected to an external network via a multimedia communication (MM.C.) relay server 120, a multimedia communication (MM.C.) server 110 in the DMZ 100, a hub 83 on a communication line, and a firewall (FW) 80. 40. MM. C. Relay server 120 and MM. C. The server 110 uses, for example, a cable 640 according to a non-IP (non-Internet protocol) based on the USB standard or the IEEE 1394 standard, or based on a wireless LAN standard such as the Bluetooth standard or the IEEE 802.11 standard. Communicate with each other using RF signals 642 according to non-IP.
[0024]
Connected to the intranet 140 are a call control device 150, a plurality of terminals 162 to 166, and a customer database 170 for authentication and the like. Customer database 170 is referenced by server 110 and by an operator or agent on terminals 162-166 when talking to a customer. A plurality of terminals 240 and 250 on the premises are connected to the external network 40 via a NAT (Network Address Translation) router 210, and a single terminal 270 is connected.
[0025]
The firewall 80 in FIG. 1 filters connection requests received via the external network 40 in accordance with the filtering rules, and only MM. C. Connection to the server 110 is permitted, and connection requests that do not conform to the rules are rejected. The firewall 80 further includes an intranet 140, an MM. C. Relay server 120 and MM. C. Packets received via the server 110 are filtered according to a predetermined filtering rule, only packets that conform to the rule are passed to the external network 40, and packets that do not conform to the rule are discarded.
[0026]
FIG. 2 shows another system configuration including an intranet 140 and an external network 40 in accordance with the present invention. In this figure, in the call center 10, the intranet 140 and the external network 40 are connected via the communication path according to the non-IP as shown in FIG. C. Relay server 120 and MM. C. They are connected to each other via the server 110 and are connected to the other servers 130 to 131 in the DMZ 100 via communication lines according to IP in a normal form. In the call center 10, a firewall (FW) 80 is connected between the DMZ 100 and the external network 40, and another firewall 85 is connected between the DMZ 100 and the intranet 140.
[0027]
Other servers 130 to 131 are connected to the hub 82 on the communication line in the DMZ 100 between the firewalls 80 and 85. MM. C. A relay server 120 is connected to the intranet 140.
[0028]
MM. C. An L3 switch 81 is provided between the hub 83 to which the server 110 is connected and the hub 82 to which the other servers 130 to 131 are connected to the firewall 80. The switch 81 is an MM. C. The connection is switched between the server 110 and the other servers 130-131. The switch 81 supplies normal packets from the external terminal 240 or 270 to the other servers 130 to 131, and transmits packets from the external terminal 240 or 270 to devices other than the other servers 130 to 131 with the MM. C. Operate to supply to server 110. The switch 81 is an MM. C. Packets from the server 110 and other servers 130 to 131 to external devices on the external network 40 are sent to the external network 40.
[0029]
FIG. C. A configuration of the server 110 is shown. MM. C. The server 110 includes a processor 1110 and a storage device 1112. The server 110 is physically connected to the hub 83 via a network interface (NW I / F) according to IP, and further includes a non-IP interface (non-IP I / F). Via MM. C. Connected to the relay server 120. The storage device 1112 stores a program for handling (processing) signaling communication and multimedia communication, thereby connecting a call or connection via the intranet 140 and a call or connection via the external network 40. Yes. A processing generator 112 is implemented (implemented) on the processor 1110 according to the program, and the processing generator 112 is a signaling communication (SIG.C.) component 1141, 1142, which has the same configuration as the signaling communication unit 114. And 1144 and multimedia communication (MM.C.) components 1161, 1162,..., And 1164 having the same configuration as the multimedia communication unit 116 are dynamically generated. A management component 118 is further mounted on the processor 1110 according to the program. Thus, the component ports described below are virtual.
[0030]
SIG. C. Components 1141 to 1144 are standard H.264 for extended VoIP recommended by ITU-T on TCP created by IETF (Internet Engineering Task Force). 323 or SIP (Session Initiation Protocol) is used to handle signaling communication with external network terminals 240 to 270, and MM. C. Handles signaling communications with the relay server 120. SIG. C. The components 1141 to 1144 are IP standards such as H.264. Conversion between the H.323 based signaling protocol and the non-IP standard signaling protocol used for cable 640 or RF signal 642 is performed.
[0031]
MM. C. The components 1161-1164 are external network terminals 240-270 based on the standard protocol RTP (Real Time Protocol) / RTCP (Real Time Control Protocol) defined in RFC1889 specifications on TCP or UDP (User Datagram Protocol). And non-IP based MM. C. Handles multimedia communication with the relay server 120, such as audio, video and / or text. MM. C. Components 1161-1164 convert between IP standard RTP / RTCP and non-IP standard multimedia communication protocols.
[0032]
FIG. 4 shows the MM. C. MM. C. The configuration of the relay server 120 is shown. MM. C. The relay server 120 includes a processor 1210 and a storage device 1212. The relay server 120 is physically connected to the intranet 140 via a network interface (NW I / F), and further includes a non-IP interface (non-IP I / F). Via MM. C. Connected to server 110. The storage device 1212 stores a program for appropriately relaying signaling communication and multimedia communication. A processing generator 122 is mounted on the processor 1210 according to the program, and the processing generator 122 is a signaling communication (SIG.C.) relay component 1241, 1242,. And 1244 and multimedia communication (MM.C.) relay components 1261, 1262,..., And 1264 having the same configuration as the multimedia communication relay unit 126 are dynamically generated.
[0033]
SIG. C. The relay components 1241-1244 are standard H.264 used by terminals 162-166 on intranet 140. 323, MM. C. H. Server 110 uses. It converts between 323-based signaling protocols and further converts signaling protocols between its IP standard and the non-IP standard used for cable 640 or RF signal 642.
[0034]
MM. C. The relay components 1261-1264 include multimedia communication protocols RTP / RTCP over UDP used by terminals 162-166 on the intranet 140, and MM. C. The conversion is performed between the multimedia communication protocol RTP / RTCP on UDP implemented on the TCP used by the server 110, and the IP standard multimedia communication protocol and the cable 640 or the RF signal 642 are used. Perform conversion between IP standard multimedia communication protocols.
[0035]
Referring to FIG. C. The SIG. C. The component 1141 includes an IP-non-IP signaling protocol conversion unit 11409, a protocol check (determination) unit 11410, a receiver / transmitter unit 11412 connected to the terminals 240 to 270 via the network 40, and MM. C. The corresponding SIG. C. A transmitter / receiver unit 11414 connected to the receiver / transmitter unit (12412) of the relay component 1241 and a connection management information transmitting / receiving unit 11418 are included. The receiver / transmitter unit 11412, the protocol check unit 11410, the IP-non-IP signaling protocol conversion unit 11409, and the transmitter / receiver unit 11414 are connected in cascade. The IP-non-IP protocol conversion unit 11409 performs conversion between an IP signaling protocol for the external network 40 and a non-IP standard signaling protocol for the cable 640 or the RF signal 642. The protocol check unit 11410 checks the TCP connection request and the signaling message according to a predetermined communication protocol, and transmits a connection response or a connection request in response thereto.
[0036]
MM. C. Similarly, the component 1161 includes an IP-non-IP multimedia communication protocol conversion unit 11609, a protocol check unit 11610, a receiver / transmitter unit 11612 connected to the terminals 240 to 270 via the network 40, and FIG. MM. C. The corresponding MM. C. It includes a transmitter / receiver unit 11614 connected to the receiver / transmitter unit (12612) of the relay component 1261 and a connection management information transmitting / receiving unit 11618. The receiver / transmitter unit 11612, the protocol check unit 11610, the IP-non-IP multimedia communication protocol conversion unit 11609, and the transmitter / receiver unit 11614 are connected in cascade. The IP-non-IP protocol conversion unit 11609 performs conversion between an IP standard multimedia communication protocol for the external network 40 and a non-IP standard multimedia communication protocol for the cable 640 or the RF signal 642. The protocol check unit 11610 checks the TCP connection request and the received packet of the multimedia data stream according to a predetermined protocol, and in response, sends a connection response, passes the matching packet, and discards the non-matching packet. To do.
[0037]
Referring to FIG. C. Relay server 120 SIG. C. The relay component 1241 includes a protocol converter 12410 and the MM. C. The corresponding SIG. C. A receiver / transmitter unit 12412 connected to the transmitter / receiver unit 11414 of the component 1141, a transmitter / receiver unit 12414 connected to the terminals 162 to 166 via the intranet 140, and a connection management information transmitting / receiving unit 12418. The receiver / transmitter unit 12412, the protocol conversion unit 12410, and the transmitter / receiver unit 12414 are connected in cascade. The protocol conversion unit 12410 performs MM. C. Protocol conversion between the server 110 and the intranet 140 is performed, and further, conversion is performed between the IP standard signaling protocol for the external network 40 and the non-IP standard signaling protocol for the cable 640 or the RF signal 642.
[0038]
MM. C. Similarly, the relay component 1261 includes the protocol conversion unit 12610 and the MM. C. The corresponding MM. C. A receiver / transmitter unit 12612 connected to the transmitter / receiver unit 11614 of the component 1161, a transmitter / receiver unit 12614 connected to the terminals 162 to 166 via the intranet 140, and a connection management information transmitting / receiving unit 12618. The receiver / transmitter unit 12612, the protocol conversion unit 12610, and the transmitter / receiver unit 12614 are connected in cascade. The protocol conversion unit 12610 receives the MM. MM. For the connection request and the received packet of the multimedia data stream. C. Performs protocol conversion between the server 110 and the intranet 140, and further converts between the IP standard multimedia communication protocol for the external network 40 and the non-IP standard multimedia communication protocol for the cable 640 or RF signal 642. .
[0039]
The management component 118 is an MM. C. Server 110 and MM. C. Manages calls in the relay server 120. The management component 118 provides management information such as the logical number of each session link for calls and multimedia communications handled by the other components 1141-1144, 1161-1164, 1241-1244, and 1261-1264. It is stored in the database 1182 and management information is supplied to those components upon request.
[0040]
The management component 118 can, for example, MM. C. The SIG. C. The connection management information transmission / reception unit 11418 of the component 1141 and the MM. C. Communication with the connection management information transmission / reception unit 11618 of the component 1161, and SIG. C. Component 1141 and MM. C. The correspondence relationship with the component 1161 is controlled.
[0041]
The management component 118 uses, for example, the MM. C. Relay server 120 SIG. C. The connection management information transmitting / receiving unit 12418 of the relay component 1241 and the MM. C. Communication with the connection management information transmission / reception unit 12618 of the relay component 1261, and SIG. C. Relay component 1241 and MM. C. Controls correspondence with the relay component 1261.
[0042]
The management component 118 communicates with the connection management information transmission / reception units 11418, 11618, 12418, and 12618, thereby MM. C. The SIG. C. Each of the components 1141 to 1144 is connected to the MM. C. Relay server 120 SIG. C. Corresponding to each of the relay components 1241-1244, MM. C. The MM. C. Each of the components 1161-1164 is connected to the MM. C. The MM. C. Corresponding to each of relay components 1261-1264.
[0043]
The call control device 150 is an MM. C. The SIG. C. A call is established between one of the components 1141-1144 and one of the terminals 162-166 on the intranet 140.
[0044]
FIG. 5 shows a modification of the multimedia communication server 110 of FIG. FIG. 6 shows a modification of the multimedia communication relay server 120 of FIG. 5, the protocol conversion unit 11409 and protocol check unit 11410 in FIG. 3 have the IP-non-IP conversion function of the protocol conversion unit 11409 and the IP-IP conversion function of the protocol conversion unit 12410 in FIG. The conversion unit 11411 has been replaced. 6, the protocol conversion unit 12410 in FIG. 4 includes a protocol check unit 12411 similar to the protocol check unit 11410 in FIG. 3, and a protocol conversion unit 12413 having the IP-non-IP conversion function of the protocol conversion unit 12410. Has been replaced.
[0045]
FIG. 7 shows another variation of the multimedia communication server 110 of FIG. FIG. 8 shows another variation of the multimedia communication relay server 120 of FIG. In the multimedia communication server 110 of FIG. 7, a component such as the management component 118 in FIG. 3 is not provided. Accordingly, the connection management information transmission / reception unit 11418 in FIG. C. The management unit 11419 that shares a part of the functions of the management component 118 related to the server 110 is replaced. Further, the connection management information transmission / reception unit 12418 in FIG. C. It is replaced with a management unit 12419 that shares some functions of the management component 118 related to the relay server 120. The management unit 11419 stores management information such as the logical number of the link of each session link in the database 1183 relating to calls and multimedia communications handled by the other components 1142 to 1144 and 1161-1164. Supply management information to those components upon request. The management unit 12419 stores management information such as a logical number of each session link in the database 1284 regarding the calls and multimedia communications handled by the other components 1242 to 1244 and 1261-1264, and requests them. Management information is supplied to those components according to Management unit 11419 and management unit 12419 communicate to obtain the other management information in databases 1284 and 1183 through receiver / transmitter unit 11412 and transmitter / receiver unit 12414, respectively.
[0046]
FIG. 9 shows a modification of the multimedia communication server 110 of FIG. FIG. 10 shows a modification of the multimedia communication relay server 120 of FIG. 9, the protocol conversion unit 11409 and the protocol check unit 11410 in FIG. 7 have the IP-non-IP conversion function of the protocol conversion unit 11409 and the IP-IP conversion function of the protocol conversion unit 12410 in FIG. The conversion unit 11411 has been replaced. 10, the protocol conversion unit 12410 in FIG. 8 includes a protocol check unit 12411 similar to the protocol check unit 11410 in FIG. 7, and a protocol conversion unit 12413 having the IP-non-IP conversion function of the protocol conversion unit 12410. Has been replaced.
[0047]
FIG. 11 shows a basic configuration of intranet terminals 162 to 166 and external network terminals 240 to 270 in FIGS. Each terminal includes a processor 1621, a storage device 1622, an audio circuit 1623, a display device 1624, and an input device 1625. The storage device 1622 stores a program for signaling communication and multimedia communication used in a terminal-to-terminal communication application such as an IP telephone application executed by the processor 1621. Audio circuit 1623 is coupled to microphone 1632 and speaker 1634. Terminals 162-166 and 240-270 have a signaling unit and a multimedia communication unit implemented on processor 1621 according to a program. External network terminals 240 and 250 or NAT router 210 and terminal 270 may be assigned fixed IP addresses or IP telephone numbers.
[0048]
The NAT router 210 has a global address and is connected to terminals 240 and 250 having respective private addresses. The NAT router 210 may have a specific port connected to the NAT router 210 only to a specific terminal 240 or 250.
[0049]
MM. C. Server 110 and MM. C. Since a link is established between the relay servers 120 according to the non-IP via the communication path 640 or 642, a malicious user can check the MM. C. Even if the server 110 is illegally accessed, the MM. C. Discarded at the server 110. Therefore, such illegal access can be prevented.
[0050]
Next, as an example, terminals 240 and 270, SIG. C. Component 1141, SIG. C. Relay component 1241, MM. C. Component 1161, MM. C. Protocols and communication procedures used in the relay component 1261 and the terminal 162 will be described. However, similar protocols and communication procedures are used in other equivalent terminals and components described above. The communication procedure is MM. C. Server 110 and MM. C. A phase of call establishment between the terminal 240 or 270 and the terminal 162 via the relay server 120 and a phase for multimedia communication between the terminal 240 or 270 and the terminal 162 are divided.
[0051]
FIG. 12 illustrates the signaling unit 2402, MM., Of the external network terminal 240 or 270 according to the present invention. C. The SIG. C. Component 1141, MM. C. Relay server 120 SIG. C. Between the relay component 1241 and the signaling portion 1642 of the intranet terminal 162, the combination of connection and link directions and signaling communication protocols used in one form of call establishment is shown. FIG. 13 illustrates another combination of connection and link directions and signaling communication protocols used in another form of call establishment between them according to the present invention. In the figure, wide arrows in one direction indicate the directions of connections and links. 12 and 13 MM. C. Server 110 and MM. C. The relay server 120 has the configuration shown in FIGS. 3 and 4 and FIGS. 5 and 6.
[0052]
Referring to FIG. 12, the signaling unit 2402 of the terminal 240 or 270 performs SIG. C. Establishing a TCP connection with the component 1141, the signaling protocol SIP indicated by 624 or Q.264. 931 and H.I. H.245 based on SIG. C. Signaling messages are sent to and received from the component 1141. Therefore, SIG. C. Component 1141 uses one port for SIP or Q. 931 and H.I. Two ports for 245 are used.
[0053]
SIG. C. Component 1141 includes SIG. C. Linked to the relay component 1241 based on a signaling protocol 612 on a non-IP standard such as the USB standard or the IEEE 1394 standard, or a non-IP standard such as the Bluetooth standard or the IEEE 802.11 standard, for example. To send and receive signaling messages.
[0054]
SIG. C. The relay component 1241 establishes a TCP connection with the signaling unit 1642 of the terminal 162, and the signaling protocol Q. 931 and the signaling protocol H.264 indicated by 634. Based on H.245, a signaling message is transmitted to and received from the signaling unit 1642.
[0055]
Next, with reference to FIG. C. Establishing a TCP connection with the relay component 1241, the signaling protocol Q. 931 and the signaling protocol H.264 indicated at 635. 245 and SIG. C. Signaling messages are sent to and received from the relay component 1241.
[0056]
SIG. C. The relay component 1241 is SIG. C. Establishing a link with the component 1141 based on a signaling protocol 613 on a non-IP standard such as the USB standard or the IEEE 1394 standard, or a non-IP standard such as the Bluetooth standard or the IEEE 802.11 standard, for example, Send and receive signaling messages.
[0057]
SIG. C. The component 1141 establishes a TCP connection with the signaling unit 2402, and uses the signaling protocol SIP indicated by 625 or Q.264. 931 and H.I. Based on H.245, a signaling message is transmitted to and received from the signaling unit 2402.
[0058]
FIG. 14 illustrates a multimedia communication unit 2404, MM. C. The MM. C. Component 1161, MM. C. The MM. C. Between the relay component 1261 and the multimedia communicator 1644 of the intranet terminal 162, the combination of connection and link directions and multimedia communication protocols used on the call is shown. FIGS. 15-19 show the connection and link directions used over the call and other combinations of multimedia communication protocols between them. In the figure, wide arrows in one direction indicate the directions of connections and links. A bidirectional wide arrow indicates a bidirectional UDP connection. 14 and 15 MM. C. Server 110 and MM. C. The relay server 120 has the configuration shown in FIGS. 3 and 4 and FIGS. 5 and 6.
[0059]
14, 15 and 16, MM. C. The component 1161 is an MM. C. A link is established with the relay component 1261 based on a non-IP signaling protocol, and based on the non-IP multimedia communication protocol indicated at 652, the MM. C. A multimedia data stream is transmitted to and received from the relay component 1261. Therefore, MM. C. Relay component 1261 and MM. C. Each of the components 1161 uses two or more ports depending on the type of media communication, such as voice, image, text, etc.
[0060]
With reference to FIGS. C. The relay component 1261 is an MM. C. A link is established with the component 1161 based on the non-IP signaling protocol 613, and based on the non-IP multimedia communication protocol indicated by 655, the MM. C. A multimedia data stream is transmitted to and received from the component 1161. Therefore, MM. C. Relay component 1261 and MM. C. Each of the components 1161 uses two or more ports depending on the type of media communication, such as voice, image, text, etc.
[0061]
14-19, MM. C. The relay component 1261 and the multimedia communication unit 1644 are connected to the H.264 indicated by 672 on the UDP connection. A multimedia communication protocol RTP for data streams over H.323 and H.264 indicated by 674. Based on the multimedia communication protocol RTCP for data stream control on H.323, the data streams are transmitted and received through the respective UDP ports.
[0062]
Referring to FIGS. 14 and 17, multimedia communication unit 2404 is connected to MM. C. A TCP connection is established with the component 1161, and SIP or H.264 indicated by 662 is established. Multimedia communication protocol RTP for data streams over H.323, SIP or H.264 as shown at 664. Based on the multimedia communication protocol RTCP for data stream control over H.323. C. A data stream is transmitted to and received from the component 1161.
[0063]
With reference now to FIGS. C. The component 1161 establishes a TCP connection with the multimedia communication unit 2404, and SIP or H.264 indicated by 663. A multimedia communication protocol RTP for data streams over H.323, SIP or H.264 indicated by 665. Based on the multimedia communication protocol RTCP for data stream control over H.323, the data stream is transmitted to and received from the multimedia communication unit 2404.
[0064]
Next, referring to FIGS. 16 and 19, the multimedia communication unit 2404 and the MM. C. The component 1161 is a SIP or H.264 indicated by 666 on the UDP connection. Multimedia communication protocol RTP for data streams over H.323, SIP or H.264 as shown at 668. Based on the multimedia communication protocol RTCP for data stream control on H.323, data streams are transmitted and received with each other.
[0065]
20 shows the MM. Of FIGS. 3 and 5 according to the present invention. C. SIG. C. The connection management information transmission / reception unit 11418 of the component 1141 and the MM. C. The connection management information transmission / reception unit 11618 of the component 1161 and the MM. C. The SIG. C. The connection management information transmission / reception unit 12418 and the MM. C. A management protocol used in communication between the connection management information transmission / reception unit 12618 of the relay component 1261 and the management component 118 is shown. A wide arrow in one direction indicates the direction of the connection.
[0066]
In FIG. 20, each of the connection management information transmission / reception units 11418, 11618, 12418, and 12618 is connected to the management component 118 based on the management protocol indicated by 692, if necessary. The link is established via the connection, the connection management message is transmitted and received, and then the link is released.
[0067]
FIG. 21 shows the MM. C. Server 110 and MM. C. When the relay server 120 has the configuration shown in FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit 2402, MM. C. The SIG. C. Component 1141, MM. C. Relay server 120 SIG. C. Between the relay component 1241 and the signaling unit 1642 of the intranet terminal 162, the combination of connection and link direction and signaling communication protocol used in the form of call establishment shown in FIG. MM. C. SIG. C. Management unit 11419 of the component 1141 and the MM. C. Between the connection management information transmitting / receiving unit 11618 of the component 1161 and the MM. C. The SIG. C. The management unit 12419 of the relay component 1241 and the MM. C. The management protocol used in the communication between the connection management information transmission / reception unit 12618 of the relay component 1261 is shown. A wide arrow in one direction indicates the direction of the connection. Based on the non-IP protocol 612, the management unit 11419 and the management unit 12419 transmit / receive connection management information to / from each other in a signaling message as indicated by 618.
[0068]
FIG. 22 shows the MM. C. Server 110 and MM. C. When the relay server 120 has the configuration shown in FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit 2402, MM. C. The SIG. C. Component 1141, MM. C. Relay server 120 SIG. C. Between the relay component 1241 and the signaling unit 1642 of the intranet terminal 162, the combination of connection and link direction and signaling communication protocol used in the form of call establishment shown in FIG. MM. C. SIG. C. Management unit 11419 of the component 1141 and the MM. C. Between the connection management information transmitting / receiving unit 11618 of the component 1161 and the MM. C. The SIG. C. The management unit 12419 of the relay component 1241 and the MM. C. The management protocol used in the communication between the connection management information transmission / reception unit 12618 of the relay component 1261 is shown. Based on the non-IP signaling protocol 614, the management unit 11419 and the management unit 12419 transmit / receive connection management information to / from each other in a signaling message as indicated by 618.
[0069]
FIG. 23 shows the signaling unit 2402, MM., Etc. of the external network terminal 240 or 270 based on the protocol shown in FIG. 12 or 21 when the user of the external network terminal 240 or 270 places a call to the call center 10. C. The SIG. C. Component 1141, MM. C. Relay server 120 SIG. C. A signaling procedure executed between the relay component 1241 and the signaling unit 1642 of the intranet terminal 162 is shown.
[0070]
The terminal 240 or 270 (signaling unit 2402) is connected to the MM. C. The TCP connection 702 with the server 110 (SIG.C. component 1141) is established first, and then the MM. C. The server 110 (component 1141) has SIP or H.264. Based on H.323, a signaling message 704 representing a call or call connection request or call initiation request is sent. The signaling message 704 includes the terminal 240 or 270 and the MM. C. Information necessary for media communication between the servers 110, ie, the IP address and port number used for media communication by the terminal 240 or 270, and the type of call or communication media requested by the terminal (eg, Audio only, audio and video, etc.).
[0071]
MM. C. Server 110 (component 1141) checks its received signaling message 708 for the protocol and, if appropriate, MM. C. A link 706 is established with the relay server 120 (SIG.C. relay component 1241) to send an incoming call request or signaling request message 710 based on non-IP. The signaling message 710 includes an MM. C. Server 110 and MM. C. Information necessary for media communication between the relay servers 120, that is, MM. C. The logical number of the link used for media communication by the server 110 and the type of call or communication media requested by the server 110 (eg, audio only, audio and video, etc.) are included.
[0072]
MM. C. In response to receiving the incoming call request message 710, the relay server 120 (component 1241) first establishes a TCP connection 712 with the intranet terminal 162 (signaling unit 1642) via the call control device 150, and then the terminal 162 (signaling unit 1642) A signaling message 714 representing an incoming call or call connection request according to H.323 is sent. The signaling message 714 includes an MM. C. Information necessary for media communication between the relay server 120 and the terminal 162, that is, MM. C. Contains the IP address and port number used by the relay server 120 for media communication and the type of call or communication media requested by the relay server (eg, audio only, audio and video, etc.) .
[0073]
The call control device 150 determines which of the terminals 162 to 166 will receive the call, and the TCP connection 712 is connected to the MM. C. It may be established between the relay server 120 and the determined terminal 162. The call control function of the call control device 150 is changed to MM. C. It may be incorporated in the relay server 120.
[0074]
In response to the signaling message 714, the terminal 162 (signaling unit 1642) can call MM. C. A signaling completion message 716 indicating completion of incoming call or completion of call connection is sent to the relay server 120 to establish a call. In the completion message 716, in addition to the code indicating the completion of signaling, the terminal 162 and the MM. C. Information necessary for media communication between the relay servers 120, that is, the IP address and port number used for media communication by the terminal 162, and the type of call or communication media accepted by the terminal (for example, Audio only, audio and video, etc.).
[0075]
MM. C. In response to receiving the signaling completion message 716, the relay server 120 (component 1241) sends an incoming call completion message 718 to the MM. C. Send to server 110 (component 1141). In the completion message 718, in addition to the completion of signaling, the MM. C. Relay server 120 and MM. C. Information necessary for media communication between the servers 110, that is, MM. C. The logical number of the link used for media communication by the relay server 120 and the type of call or communication media accepted by the relay server are included.
[0076]
MM. C. In response to reception of the incoming call completion message 718, the server 110 (component 1141) sends a signaling completion message 720 indicating call connection completion to the terminal 240 or 270 (signaling unit 2402). In addition to the completion of signaling, the completion message 720 includes the terminal 240 or 270 and the MM. C. Information necessary for media communication between the servers 110, that is, MM. C. The logical number of the link used for media communication by the server 110 and the type of call or communication media accepted by the server 110 are included.
[0077]
In response to receiving the signaling completion message 720, the terminal 240 or 270 establishes the call. In this way, the user of the terminal 240 or 270 and the operator or agent of the terminal 162 of the call center 10 can perform multimedia communication (for example, IP telephone). Thereafter, the communication procedure continues to FIGS.
[0078]
When all of the terminals 162-166 are busy, either the call controller 150 or the determined terminals 162-166 sends a signaling message indicating busy or release completion to the MM. C. Send to relay server 120. MM. C. In response to receiving the message, the relay server 120 responds to the reception of the MM. C. Send a busy or release message to the server 110. MM. C. In response to receiving the message, the server 110 sends a signaling message indicating busy or release completion to the terminal 240 or 270.
[0079]
FIG. 24 shows the signaling unit 1642, MM., Etc. of the intranet terminal 162 based on the protocol shown in FIG. 13 or 22 when the operator or agent of the call center 10 makes a call to the external network terminal 240 or 270. C. Relay server 120 SIG. C. Relay component 1241, MM. C. The SIG. C. A signaling procedure executed between the component 1141 and the signaling unit 2402 of the external network terminal 240 or 270 is shown.
[0080]
Referring to FIG. 24, when the operator or agent of the terminal 162 of the call center 10 activates the multimedia communication application on the terminal and places a call to the external network terminal 240 or 270, the terminal 162 (signaling unit 1642) . C. The TCP connection 752 with the relay server 120 (component 1241) is established first, and then the MM. C. A signaling message 754 representing a call or call connection request is sent to the relay server 120 (component 1241). MM. C. Relay server 120 (component 1241) establishes link 756 in response to its signaling message 754, and MM. C. An incoming call request message 758 is sent to the server 110 (component 1141).
[0081]
In FIG. C. In order for the server 110 to establish a TCP connection 760 with a specific terminal 240, 250 or 270 connected to the network 40, a specific fixed IP address or IP telephone number is assigned to the specific terminal 240, 250 or 270. Need to be.
[0082]
MM. C. When the server 110 establishes a TCP connection with a specific terminal 240 connected to the network 40 via the NAT router 210, the server 110 designates a specific port connected to the specific terminal 240 to the NAT router 210, and A TCP connection is established with the specific terminal 240 via the port.
[0083]
MM. C. In response to receiving the incoming call request message 758, the server 110 (component 1141) first establishes a TCP connection 760 with the external network terminal 240 or 270 (signaling unit 2402), and then the terminal 240 or 270 (signaling unit). 2402) is sent a signaling message 762 representing an incoming call or call connection request. In response to the signaling message 762, the terminal 240 or 270 (signaling unit 2402) can call MM. C. A signaling completion message 764 is sent to the server 110 (component 1141) to establish the call. When the terminal 240 or 270 (signaling unit 2402) is busy, the terminal 240 or 270 (signaling unit 2402) transmits a signaling message indicating busy or release completion to the MM. C. Send to server 110 (component 1141).
[0084]
MM. C. In response to receiving the signaling completion message 764, the server 110 (component 1141) C. An incoming call completion message 766 is sent to the relay server 120 (component 1241). MM. C. In response to receiving the incoming call completion message 766, the relay server 120 (component 1241) sends a signaling completion message 768 to the terminal 162 (signaling unit 1642). In response to receiving the signaling completion message 768, the terminal 162 (signaling unit 1642) establishes a call. In this way, the operator or agent of the terminal 162 of the call center 10 and the user of the terminal 240 or 270 can talk. Thereafter, the communication procedure continues to FIGS.
[0085]
FIG. 25 illustrates multimedia communication unit 2404, MM., Etc. of external network terminal 240 or 270 based on the protocol of FIG. C. The MM. C. Component 1161, MM. C. The MM. C. The multimedia communication procedure executed between the relay component 1261 and the multimedia communication unit 1644 of the intranet terminal 162 is shown.
[0086]
FIG. 26 illustrates an alternative multimedia communication procedure performed between them based on the protocol of FIG. 15 according to the present invention.
[0087]
FIG. 27 illustrates another alternative multimedia communication procedure performed between them based on the protocol of FIG. 16 according to the present invention.
[0088]
FIG. 28 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 17 according to the present invention.
[0089]
FIG. 29 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 18 according to the present invention.
[0090]
FIG. 30 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 19 according to the present invention.
[0091]
25 to 27, the MM. C. The SIG. Component 1141 is MM. C. Relay server 120 SIG. When the link with the component 1241 is established, the MM. C. The MM. C. The component 1161 is an MM. C. The MM. C. Establish link 802 with relay component 1261.
[0092]
28 to 30, the MM. C. Relay server 120 SIG. Component 1241 is MM. C. The SIG. When the link with the component 1141 is established, the MM. C. The MM. C. The relay component 1261 is an MM. C. The MM. C. A link 804 is established with the relay component 1161.
[0093]
25 to 30, the terminal 162 (multimedia communication unit 1644) and the MM. C. The relay server 120 (component 1261) transmits and receives the signaling messages 714 and 716 of FIG. 23 and the transmission and reception of the signaling messages 754 and 768 of FIG. A UDP connection 812 is established. Terminal 162 (communication unit 1644) and MM. C. A multimedia data stream 818 is transmitted and received between the relay servers 120 (component 1261) according to RTP. MM. C. Relay server 120 (component 1261) and MM. C. A multimedia data stream 816 is transmitted and received between the server 110 (component 1161) over the established link 804 according to non-IP.
[0094]
25 and 28, when the terminal 240 or 270 (signaling unit 2402) receives the signaling completion message 720 of FIG. 23 and transmits the signaling completion message 764 of FIG. 24, the server 110 ( The IP address and port number of the MM.C. C. A TCP connection 810 is established with the server 110 (MM.C. component 1161). The terminal 240 or 270 (multimedia communication unit 2404) then transmits the MM. C. The multimedia data stream 814 is transmitted / received between the servers 110 (component 1161) according to the non-IP.
[0095]
26 and 29, the MM. C. When the server 110 (component 1161) receives the incoming call completion message 718 of FIG. 23 and the signaling completion message 764 of FIG. Establish. The terminal 240 or 270 (multimedia communication unit 2404) then sends the MM. C. Multimedia data stream 814 is transmitted and received between servers 110 (component 1161).
[0096]
27 and 30, the MM. C. The server 110 (component 1161) and the terminal 240 or 270 (signaling unit 2402) receive and transmit the signaling messages 704 and 720 in FIG. 23 and the signaling 762 and 764 in FIG. A UDP connection 814 is established with each other using a UDP port. MM. C. A multimedia data stream 824 is transmitted / received between the server 110 (component 1161) and the terminal 240 or 270 (signaling unit 2402) according to RTP.
[0097]
FIG. 31 serves to explain the relationship between the signaling procedure of FIG. 23 and the multimedia communication procedure of FIGS.
[0098]
In FIG. C. SIG. C. S114. C. The component 1141 is transmitted by the signaling unit 2402 as shown in FIG. In response to connection 702 and signaling message 704 established with component 1141, SIG. C. A link 706 is established with the relay component 1241, and the MM. C. MM. C. A multimedia communication start request 952 is supplied to the component 1161. SIG. C. The relay component 1241 establishes a connection 712 with the signaling unit 1642. As described above, signaling messages are sent and received over the established link 706 and connection 712.
[0099]
MM. C. In response to the multimedia communication start request 952, the component 1161 responds to the MM. C. MM. C. A link 802 is established with the relay component 1261. MM. C. Component 1161 and MM. C. Connections 810 to 814 shown in FIGS. 25 to 27 are established between the units 2404. MM. C. Relay component 1261 and MM. C. A connection 812 is established between the units 1644. As described above, multimedia data streams are transmitted and received over the established link 802 and connection 812.
[0100]
Thereafter, SIG. C. S114. C. In response to the connection 703 established by the signaling unit of another external terminal, the component 1142 receives the MM. Another SIG. C. A link 707 is established with the relay component 1242, and the MM. C. The component 1162 is supplied with another multimedia communication start request 953. SIG. C. The relay component 1242 establishes a connection 713 with the signaling unit of another intranet terminal. As described above, signaling messages are transmitted and received over established connections and links.
[0101]
MM. C. In response to the multimedia communication start request 953, the component 1162 receives another MM. C. A link 803 is established with the relay component 1262. MM. C. Component 1162 and the MM. C. A connection 815 is established between the units in the same manner as the connections 810 to 814 in FIGS. MM. C. Relay component 1262 and its other intranet terminal MM. C. Connection 813 is established between the sections. As described above, multimedia data streams are transmitted and received over established connections and links.
[0102]
FIG. 32 helps explain the relationship between the signaling procedure of FIG. 24 and the multimedia communication procedure of FIGS.
[0103]
In FIG. C. Relay server 120 SIG. C. S124. C. The relay component 1241 is transmitted by the signaling unit 1642 as shown in FIG. C. In response to connection 752 and signaling message 754 established with relay component 1241, SIG. C. A link 756 is established with the component 1141, and the MM. C. A multimedia communication start request 955 is supplied to the relay component 1261. SIG. C. The component 1141 establishes a connection 760 with the signaling unit 2402 of the external terminal 240 or 270. As described above, signaling messages are sent and received over the established link 756 and connection 760.
[0104]
MM. C. In response to the multimedia communication start request 955, the relay component 1261 receives the MM. C. A link 804 is established with the component 1161. MM. C. Relay component 1261 and MM. C. A connection 812 shown in FIGS. 28 to 30 is established between the units 1644. MM. C. Component 1161 and the MM. C. Connections 810 to 814 are established between the units 2404. As described above, multimedia data streams are transmitted and received over established connections and links.
[0105]
Thereafter, SIG. C. SIG. C. The relay component 1242 responds to the connection 753 established by the signaling unit of another intranet terminal in response to the MM. C. Another SIG. C. A link 757 is established with the component 1142, and the MM. C. Provide another multimedia communication start request 956 to the relay component 1262. SIG. C. The component 1142 establishes a connection 761 with the signaling unit of another external terminal. As described above, signaling messages are transmitted and received over established connections and links.
[0106]
MM. C. In response to the multimedia communication start request 956, the relay component 1262 receives another MM. C. A link 805 is established with the component 1162. MM. C. Relay component 1262 and its intranet terminal MM. C. A connection 813 similar to the connection 812 shown in FIGS. 28 to 30 is established between the units. MM. C. Component 1162 and the MM. C. The same l connection 815 as the connections 810 to 814 is established between the units. As described above, multimedia data streams are transmitted and received over established connections and links.
[0107]
The embodiments described above are merely given as typical examples, and variations and variations thereof will be apparent to those skilled in the art. Those skilled in the art will depart from the principles of the present invention and the scope of the invention described in the claims. Obviously, various modifications of the above-described embodiment can be made.
[0108]
(Appendix 1) An information processing apparatus in a DMZ that can be connected to an external network and another apparatus that can be connected to an intranet,
In response to a signal received from the external network, a first link is established with the other device, and a signal is transmitted on the established first link based on a non-Internet protocol. First means configured to establish a call with said another device;
A second means for establishing a second link for data communication with the other device on the established call to transmit or receive data based on a non-Internet protocol;
An information processing apparatus comprising:
(Supplementary note 2) The information processing apparatus according to supplementary note 1, wherein the first means receives a signal from the external network over a connection established with the external network based on an Internet protocol. .
(Supplementary Note 3) The first means supplies a communication start request to the second means in response to the signal received from the external network, and the second device responds to the communication start request. The information processing apparatus according to attachment 1, wherein the information processing apparatus establishes the second link.
(Supplementary Note 4) An information processing apparatus in a DMZ that can be connected to an external network and another apparatus that can be connected to an intranet,
Means for establishing a connection on the external network and transmitting or receiving data on the established connection based on an Internet protocol;
An information processing apparatus comprising means for establishing a link with said another apparatus and transmitting or receiving data on said established link based on a non-Internet protocol.
(Supplementary Note 5) An information processing device that can be connected to another device in the DMZ and an intranet,
In response to a signal received from the intranet, a link is established with the other device, a signal is transmitted on the established first link based on a non-Internet protocol, and First means configured to establish a call with the device;
A second means for establishing a second link for data communication with the other device on the established call to transmit or receive data based on a non-Internet protocol;
An information processing apparatus comprising:
(Supplementary note 6) The information according to supplementary note 5, wherein the first means receives a signal from the other device over a connection with the other device established based on an Internet protocol. Processing equipment.
(Supplementary note 7) The first means supplies a communication start request to the second means in response to the signal received from the external network, and the second device responds to the communication start request. The information processing apparatus according to appendix 5, wherein the second link is established.
(Supplementary Note 8) An information processing apparatus that can be connected to another apparatus in the DMZ and an intranet,
Means for establishing a connection on the intranet and transmitting or receiving data on the established connection based on an internet protocol;
Means for establishing a link with said another device and transmitting or receiving data on said established link based on a non-Internet protocol;
An information processing apparatus comprising:
(Supplementary note 9) A program stored in a storage medium for an information processing device in a DMZ that can be connected to an external network and another device that can be connected to an intranet,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call;
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run.
(Supplementary note 10) The program according to supplementary note 9, operable to execute a step of establishing a connection with the external network based on an Internet protocol.
(Supplementary Note 11) A program stored in a storage medium for an information processing apparatus in a DMZ connectable to an external network and another apparatus connectable to an intranet,
Establishing a connection on the external network;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Transmitting or receiving data on the established link based on a non-Internet protocol;
A program that can run to run.
(Supplementary Note 12) A program stored in a storage medium for an information processing device connectable to another device in the DMZ and an intranet,
Establishing a link with the other device in response to a signal received from the intranet;
Sending a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call;
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run.
(Supplementary note 13) The program according to supplementary note 12, operable to cause a step of establishing a connection with the other device based on an Internet protocol.
(Supplementary Note 14) A program stored in a storage medium for an information processing device connectable to another device in the DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Transmitting or receiving data on the established link based on a non-Internet protocol;
A program that can run to run.
(Supplementary Note 15) A communication method in DMZ that can be connected to an intranet and an external network,
Establishing a first link with the another device in response to a signal received from the external network;
Sending a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call;
Transmitting or receiving data based on a non-Internet protocol over the established second link;
Including a communication method.
(Supplementary Note 16) A communication method in DMZ that can be connected to an intranet and an external network,
Establishing a connection on the external network;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Transmitting or receiving data on the established link based on a non-Internet protocol;
Including a communication method.
(Supplementary Note 17) A communication method in an information processing apparatus that can be connected to another apparatus in the DMZ and an intranet,
Establishing a link with the other device in response to a signal received from the intranet;
Sending a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call;
Transmitting or receiving data based on a non-Internet protocol over the established second link;
Including a communication method.
(Supplementary note 18) A communication method in an information processing apparatus that can be connected to another apparatus in an DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a link with said another device;
Sending or receiving data over the established connection based on an Internet protocol;
Transmitting or receiving data on the established link based on a non-Internet protocol;
Including a communication method.
[0109]
【The invention's effect】
The present invention has the effect of realizing call establishment and multimedia communication between a terminal connected to the intranet and a terminal connected to the external network while ensuring the security of the intranet.
[Brief description of the drawings]
FIG. 1 shows a system configuration including an intranet connected to a server and a terminal and an external network connected to the terminal according to the present invention.
FIG. 2 shows another system configuration including an intranet and an external network according to the present invention.
FIG. 3 shows a configuration of a multimedia communication server.
4 shows the configuration of a multimedia communication relay server coupled to the multimedia communication server of FIG.
FIG. 5 shows a modification of the multimedia communication server of FIG.
FIG. 6 shows a variation of the multimedia communication relay server of FIG.
FIG. 7 shows another variation of the multimedia communication server of FIG.
FIG. 8 illustrates another variation of the multimedia communication relay server of FIG.
9 shows a variation of the multimedia communication server of FIG.
FIG. 10 shows a variation of the multimedia communication relay server of FIG.
FIG. 11 shows a basic configuration of the intranet terminal and the external network terminal in FIGS. 1 and 2;
FIG. 12 is a block diagram of a signaling unit of an external network terminal, a signaling communication component of a multimedia communication server, a signaling communication relay component of a multimedia communication relay server, and a signaling unit of an intranet terminal according to the present invention; Figure 2 illustrates a combination of connection and link directions and signaling communication protocols used in one form of call establishment.
FIG. 13 illustrates another combination of connection and link directions and signaling communication protocols used in other different forms of call establishment between them according to the present invention.
FIG. 14 shows a multimedia communication unit, MM. C. Server MM. C. Component, MM. C. Relay server MM. C. Fig. 2 shows the connection and link direction used on the call and the multimedia communication protocol combination between the relay component and the multimedia communication part of the intranet terminal.
FIG. 15 illustrates another combination of connection and link directions and multimedia communication protocols used over the call between them.
FIG. 16 illustrates yet another combination of connection and link directions and multimedia communication protocols used over the call between them.
FIG. 17 illustrates yet another combination of connection and link directions and multimedia communication protocols used over the call between them.
FIG. 18 illustrates yet another combination of connection and link directions and multimedia communication protocols used over the call between them.
FIG. 19 illustrates yet another combination of connection and link directions and multimedia communication protocols used over the call between them.
FIG. 20 shows the MM. Of FIGS. C. SIG. C. Component connection management information transceiver and MM. C. The connection management information transmission / reception unit of the component, and the MM. C. SIG. C. Relay component connection management information transmitter / receiver and MM. C. The management protocol used in communication between the connection management information transmission / reception part of a relay component and a management component is shown.
FIG. 21 is a diagram illustrating the MM. C. Server and MM. C. When the relay server has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit, MM. C. Server SIG. C. Component, MM. C. SIG. C. Between the relay component and the signaling part of the intranet terminal, the combination of connection and link direction and signaling communication protocol used in the call establishment form shown in FIG. C. SIG. C. Component management and MM. C. Between the connection management information transmission / reception unit of the component and the MM. C. SIG. C. Relay component management and MM. C. Fig. 6 shows a management protocol used in communication between connection management information transmission / reception units of a relay component.
FIG. 22 is a diagram illustrating the MM. C. Server and MM. C. When the relay server has the configuration of FIGS. 7 and 8 and FIGS. 9 and 10, the signaling unit, MM. C. Server SIG. C. Component, MM. C. SIG. C. Between the relay component and the signaling part of the intranet terminal, the combination of connection and link direction and signaling communication protocol used in the call establishment form shown in FIG. C. SIG. C. Component management and MM. C. Between the connection management information transmission / reception unit of the component and the MM. C. SIG. C. Relay component management and MM. C. Fig. 6 shows a management protocol used in communication between connection management information transmission / reception units of a relay component.
FIG. 23 is a diagram illustrating a signaling unit MM. Based on the protocol shown in FIG. 12 or 21 when a user of an external network terminal places a call to a call center. C. Server SIG. C. Component, MM. C. SIG. C. Fig. 4 shows a signaling procedure performed between the relay component and the signaling part of the intranet terminal.
FIG. 24 is a diagram illustrating a signaling unit MM. Based on the protocol shown in FIG. 13 or 22 when a call center operator or agent places a call to an external network terminal. C. SIG. C. Relay component, MM. C. Server SIG. C. Fig. 4 shows a signaling procedure executed between the component and the signaling part of the external network terminal.
25 is a diagram illustrating a multimedia communication unit MM.M of an external network terminal based on the protocol of FIG. C. Server MM. C. Component, MM. C. Relay server MM. C. Fig. 2 shows a multimedia communication procedure executed between a relay component and a multimedia communication part of an intranet terminal.
FIG. 26 illustrates an alternative multimedia communication procedure performed between them based on the protocol of FIG. 15 according to the present invention.
FIG. 27 illustrates another alternative multimedia communication procedure performed between them based on the protocol of FIG. 16 according to the present invention.
FIG. 28 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 17 according to the present invention.
FIG. 29 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 18 according to the present invention.
FIG. 30 illustrates yet another alternative multimedia communication procedure performed between them based on the protocol of FIG. 19 according to the present invention.
FIG. 31 is useful for explaining the relationship between the signaling procedure of FIG. 23 and the multimedia communication procedure of FIGS.
32 serves to explain the relationship between the signaling procedure of FIG. 24 and the multimedia communication procedure of FIGS. 28-30 according to the present invention.
[Explanation of symbols]
40 External network
80, 85, 90 firewall
100 DMZ
110 Multimedia communication server
120 Multimedia communication relay server
140 Intranet
150 Call control device
162-166, 240-270 terminal
210 NAT router

Claims (10)

An information processing apparatus in the DMZ that can be connected to an external network and another apparatus that can be connected to an intranet,
Communication management means;
In response to a signal received from the external network, a first link is established with the other device, and first management information representing the established first link is supplied to the communication management means. And a first means configured to send a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Receiving the first management information from the communication management means, establishing a second link for data communication with the other device on the established call, and establishing the established second Second means for supplying second management information representing a link to the communication management means, and transmitting or receiving data on the established second link based on a non-Internet protocol;
With
The communication management means is configured to, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. It holds information that associates with
Information processing device. An information processing apparatus in the DMZ that can be connected to an external network and another apparatus that can be connected to an intranet,
Communication management means;
A connection is established on the external network, a first link associated with the connection is established with the other device, and first management information representing the established first link is stored in the communication management First means adapted to send a signal on said established first link based on a non-Internet protocol to establish a call with said another device;
Receiving the first management information from the communication management means, establishing a second link for data communication with the other device on the established call, and establishing the established second Supplying second management information representing a link to the communication management means, transmitting or receiving data on the established connection based on an internet protocol, and non-internet protocol on the established second link A second means for transmitting or receiving data based on:
With
The communication management means is configured to, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. It holds information that associates with
Information processing device. An information processing device connectable to another device in the DMZ and an intranet,
Communication management means;
In response to a signal received from the intranet, a first link is established with the other device, and first management information representing the established first link is supplied to the communication management means. First means configured to send a signal on said established first link based on a non-Internet protocol to establish a call with said another device;
Receiving the first management information from the communication management means, establishing a second link for data communication with the other device on the established call, and establishing the established second Second means for supplying second management information representing a link to the communication management means, and transmitting or receiving data on the established second link based on a non-Internet protocol;
With
The communication management means is configured to, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. It holds information that associates with
An information processing apparatus comprising: An information processing device connectable to another device in the DMZ and an intranet,
Communication management means;
A connection is established on the intranet, a first link associated with the connection is established with the other device, and first management information representing the established first link is stored in the communication management means. A first means configured to send a signal on the established first link based on a non-Internet protocol to establish a call with the other device;
Receiving the first management information from the communication management means, establishing a second link for data communication with the other device on the established call, and establishing the established second Providing second management information representing a link to the communication management means, transmitting or receiving data on the established connection based on an internet protocol, and non-internet communication on the established second link; A second means for transmitting or receiving data based on the protocol;
With
The communication management means is configured to, based on the first management information and the second management information, for the period during which the call is maintained, the established first link and the established second link. It holds information that associates with
Information processing device. A program for an information processing apparatus in a DMZ connectable to an external network and another apparatus connectable to an intranet,
Establishing a first link with the another device in response to a signal received from the external network;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run. A program for an information processing apparatus in a DMZ connectable to an external network and another apparatus connectable to an intranet,
Establishing a connection on the external network;
Establishing a first link associated with the connection with the other device;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on an internet protocol over the established connection and transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run. A program for an information processing device connectable to another device in an DMZ and an intranet,
Establishing a first link with the other device in response to a signal received from the intranet;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run. A program for an information processing device connectable to another device in an DMZ and an intranet,
Establishing a connection on the intranet;
Establishing a first link associated with the connection with the other device;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on an internet protocol over the established connection and transmitting or receiving data based on a non-Internet protocol over the established second link;
A program that can run to run. A communication method in an information processing apparatus in a DMZ, connectable to an external network and another apparatus connectable to an intranet,
Establishing a first link with the another device in response to a signal received from the external network;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A communication method including: A communication method in an information processing device connectable to another device and an intranet in a DMZ,
Establishing a first link with the other device in response to a signal received from the intranet;
Storing first management information representing the established first link in a storage means;
Sending a signal based on a non-Internet protocol on the established first link to establish a call with the other device;
Establishing a second link for data communication with the other device on the established call based on the first management information;
Second management information representing the established second link is stored in the storage means, and the call is maintained in the storage means based on the first management information and the second management information. Maintaining information associating the established first link with the established second link for a period of time,
Transmitting or receiving data based on a non-Internet protocol over the established second link;
A communication method including:

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