RU2759798C1 - Method for implementing an audio connection using the sip protocol without installing the sip module in the interactive panels of the intercom - Google Patents

Abstract

FIELD: SIP protocol connection.

SUBSTANCE: invention relates to means of implementing an audio SIP connection without installing a SIP module in interactive intercom panels. The audio stream is formed from the interactive panel of the intercom. The audio stream received from the interactive panel of the intercom is converted into the raw data format and transmitted to the server. Audio connections are arranged using the SIP protocol, through a proxy server, between the server and the user’s computing device being called. The server sends a request containing the address of the called user to establish a connection to the address of the proxy server and the default port 5060. The proxy server requests the current address of the called user from the location server. The proxy server sends a request to establish a connection to the user’s computing device, and the proxy server address is added to the request to provide feedback from the user’s computing device.

EFFECT: establishing a connection between the interactive panel of the intercom and the user’s computing device via the SIP protocol on server capacities.

5 cl, 1 dwg

Description

FIELD OF TECHNOLOGY

The present technical solution relates to the field of computing, in particular, to methods for implementing an audio connection via the SIP protocol without installing a SIP module in the interactive panels of the intercom.

LEVEL OF TECHNOLOGY

From the prior art, a solution is known that is selected as the closest analogue, RU 184516 U1, published on October 29, 2018. In this solution, an intercom is disclosed, consisting of a motherboard, the functional composition of which includes the following units: switch, communication unit, autonomous operation unit, processor unit, multimedia unit, external control unit, relay unit, sensor control unit, power supply unit, unit power control, memory unit, decryption unit. The processing unit is connected to a memory unit, a power control unit, a sensor control unit, a relay unit, a decryption unit, a decryption unit is connected to an external control unit and a multimedia unit, a power control unit is connected to a power supply unit, an external control unit is connected to a communication unit and a unit autonomous operation, the multimedia unit is connected to the switch.

The disadvantages of this device is the installation of a module that makes SIP connections in the device itself. As a result, the service company is bound to the SIP protocol and is unable to implement a connection using other protocols without design changes.

SUMMARY OF THE INVENTION

The technical problem to be solved by the claimed solution is to create a method for implementing a SIP connection without installing a SIP module in the intercom panel.

The technical result consists in establishing a connection between the interactive panel of the intercom and the user's computing device via the SIP protocol at the server facilities. An additional technical result consists in the implementation of the purpose.

The claimed result is achieved by implementing a method for realizing an audio connection via the SIP protocol without installing a SIP module in the interactive panels of the intercom using server facilities, containing the stages at which:

carry out the formation of an audio stream from the interactive panel of the intercom;

the audio stream received from the interactive panel of the intercom is converted into raw data format and transmitted to the server;

establish audio connections via the SIP protocol, through a proxy server, between the server and the called user's computing device;

the server transmits a request containing the address of the called user to establish a connection to the proxy server address and default port 5060;

the proxy server requests the current address of the called user from the location server;

further, the proxy server sends a request to establish a connection to the user's computing device, and the request is added with the address of the proxy server to provide feedback from the user's computing device;

the user's computing device receives the call request and a conversation phase begins;

upon completion of the conversation phase, one of the parties sends a request to terminate the session, which is confirmed by the response of the other party that the request to terminate the session has been processed, while

the outgoing audio stream from the user's computing device is relayed by the server to the interactive panel of the intercom.

In a private embodiment of the proposed method, the data is transmitted to the server via the websocket protocol.

In another particular embodiment of the proposed method, the proxy server is implemented on the server.

In another particular embodiment of the proposed method, after receiving the call by the user on the opposite side, a confirmation is sent that the call request has been processed, containing data on the functionality of the called computing device in the SDP protocol format.

In another particular embodiment of the proposed method, the server confirms the receipt of the response with an ACK request, thereby ending the connection establishment phase and starting the conversation phase.

DESCRIPTION OF DRAWINGS

The implementation of the invention will be described in the following in accordance with the accompanying drawings, which are presented to explain the essence of the invention and in no way limit the scope of the invention. The following drawings are attached to the application:

FIG. 1 illustrates an example of a general arrangement of a computing device.

DETAILED DESCRIPTION OF THE INVENTION

In the following detailed description of an implementation of the invention, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. However, it will be obvious to those skilled in the art how the present invention can be used, with or without these implementation details. In other instances, well-known techniques, procedures, and components have not been described in detail so as not to obscure the details of the present invention.

In addition, it will be clear from the above description that the invention is not limited to the above implementation. Numerous possible modifications, changes, variations and substitutions, while retaining the spirit and form of the present invention, will be apparent to those skilled in the art.

The difference between the proposed solution and the existing ones is the absence of a module that implements SIP connections in the device itself, since the installation of this module restricts the implementation of connections using other protocols without constructive changes. So, for example, in the proposed solution, the possibility of video calls over the RTSP protocol can also be implemented. If the SIP module is installed on the board of the interactive intercom panel, video calls are limited to the SIP protocol, or to make video calls using another protocol, an additional module must be installed on each board.

The interactive intercom panel has an Internet connection to provide transmission and reception of information from the server for making a call to the user's computing device, so that the user who made a call from the interactive intercom panel can get into the room.

Connections of the computing device and the interactive panel of the intercom is carried out through the application, one of the functions of which is to receive audio and video calls.

The codec g.711 module is installed on the interactive panel of the intercom, which, using the web socket protocol, transmits the audio stream (sound signal) received from the interactive panel of the intercom to the server.

The audio signal received from the interactive panel of the intercom passes through an analog-to-digital converter and at the output the audio signal is presented in the raw data format (unprocessed audio signal, uncompressed), which is transmitted to the server via the web socket protocol.

The server implements a SIP proxy server capable of establishing a connection via the SIP protocol.

The server sends a request to establish a connection (INVITE) to the proxy server address and port 5060, which is the default port for establishing a SIP connection between two hosts. In the INVITE request, the server indicates the IP address of the interactive intercom panel known to it. Each interactive intercom panel has its own ID - a unique number by which you can set all the necessary relevant information on the interactive intercom panel: IP address, geographical address and other data.

The proxy server requests the current address of the called user from the location server to determine the location on the network to establish a connection between the proxy server and the interactive intercom panel. The location server is a core server module, which is a database where location data is stored.

Next, the proxy server sends an INVITE request to the user's computing device located in the room, the body of the request indicates the version of the SIP protocol, the type of encoding, the port number, and data on the server's functionality, but a field with the address of the proxy server is added to the request in order to so that responses from the computing device go through this proxy server.

The data about the functionality of the server and the computing device is information about what methods the remote client supports, the supported "content types", extensions, codecs, and so on. This data is requested before the INVITE request, by means of an OPTIONS request to obtain information that will allow the INVITE request to be correctly sent. For example, when establishing a SIP connection, before filling in the "Require" header field in the INVITE message with a list of parameters that are not sure that the destination device supports them, an OPTIONS request is sent to this device in order to see if there is those parameters that need to be placed in the "Require" field of the INVITE message, in the returned "Supported" field, in the response to our OPTIONS request.

After receiving and processing the request, the user's computing device notifies its user about the incoming call (by displaying a notification / sound signal through the application), and sends a response to the opposite party that the request is being processed (180 Ringing).

After receiving a call on the computing device, a message is sent to the opposite side about the successful processing of the request (200 OK), containing data on the type of information that will be transmitted, encryption methods, in the SDP protocol format.

The server confirms the receipt of the response (i.e. the connection is established) with an ACK request. This completes the call setup phase and begins the conversation phase. At the end of the conversation phase, one of the parties sends a request to end the session (BYE), which is confirmed by the other party with a response about the successful processing of the request (200 OK). For example, if the user ends the call, a request is sent from him to end the session, which is confirmed by the interactive intercom panel.

The outgoing audio signal from the user's computing device is relayed by the server to the interactive panel of the intercom.

The received audio signal, without loss of quality, as the audio signal is processed on the server, is broadcast over the established SIP connection to the user's computing device, which provides access to the premises.

FIG. 1, a general diagram of a computing device (100) that provides data processing necessary for the implementation of the claimed solution will be presented below.

In the general case, the device (100) contains such components as: one or more processors (101), at least one memory (102), data storage means (103), input / output interfaces (104), I / O means ( 105), means of networking (106).

The processor (101) of the device performs the basic computational operations necessary for the operation of the device (100) or the functionality of one or more of its components. The processor (101) executes the necessary computer readable instructions contained in the main memory (102).

Memory (102), as a rule, is made in the form of RAM and contains the necessary program logic that provides the required functionality.

The data storage medium (103) can be performed in the form of HDD, SSD disks, raid array, network storage, flash memory, optical information storage devices (CD, DVD, MD, Blue-Ray disks), etc. The means (103) allows performing long-term storage of various types of information, for example, the aforementioned files with user data sets, a database containing records of time intervals measured for each user, user identifiers, etc.

Interfaces (104) are standard means for connecting and working with the server side, for example, USB, RS232, RJ45, LPT, COM, HDMI, PS / 2, Lightning, FireWire, etc.

The choice of interfaces (104) depends on the specific implementation of the device (100), which can be a personal computer, mainframe, server cluster, thin client, smartphone, laptop, etc.

As means of I / O data (105) in any embodiment of the system that implements the described method, a keyboard should be used. The hardware design of the keyboard can be any known: it can be either a built-in keyboard used on a laptop or netbook, or a stand-alone device connected to a desktop computer, server or other computer device. In this case, the connection can be either wired, in which the connecting cable of the keyboard is connected to the PS / 2 or USB port located on the system unit of the desktop computer, or wireless, in which the keyboard exchanges data via a wireless communication channel, for example, a radio channel, with base station, which, in turn, is directly connected to the system unit, for example, to one of the USB ports. In addition to the keyboard, I / O data can also include: joystick, display (touch screen), projector, touchpad, mouse, trackball, light pen, speakers, microphone, etc.

Networking means (106) are selected from a device that provides network reception and transmission of data, for example, an Ethernet card, WLAN / Wi-Fi module, Bluetooth module, BLE module, NFC module, IrDa, RFID module, GSM modem, etc. The means (105) provide the organization of data exchange via a wired or wireless data transmission channel, for example, WAN, PAN, LAN, Intranet, Internet, WLAN, WMAN, or GSM.

The components of the device (100) are interconnected via a common data bus (110).

In the present application materials, a preferred disclosure of the implementation of the claimed technical solution was presented, which should not be used as limiting other, particular embodiments of its implementation, which do not go beyond the scope of the claimed scope of legal protection and are obvious to specialists in the relevant field of technology.

Claims (14)

1. A method for realizing an audio connection via SIP without installing a SIP module in interactive panels of an intercom using server facilities, containing the stages at which: carry out the formation of an audio stream from the interactive panel of the intercom; the audio stream received from the interactive panel of the intercom is converted into raw data format and transmitted to the server; establish an audio connection via the SIP protocol, through a proxy server, between the server and the called user's computing device; the server transmits a request containing the address of the called user to establish a connection to the proxy server address and default port 5060; the proxy server requests the current address of the called user from the location server; then, the proxy server sends a request to establish a connection to the user's computing device, and the proxy server address is added to the request to provide feedback from the user's computing device; the user's computing device receives the call request and a conversation phase begins; at the end of the conversation phase, one of the parties sends a request to end the session, which is confirmed by the response of the other party that the request to end the session has been processed, while the outgoing audio stream from the user's computing device is relayed by the server to the interactive panel of the intercom. 2. The method according to claim 1, characterized in that the data is transmitted to the server via the websocket protocol. 3. The method according to claim 1, wherein the proxy server is implemented on a server. 4. The method according to claim 1, characterized in that after receiving the call by the user on the opposite side, a confirmation is sent that the call request has been processed, containing data on the functionality of the called computing device in the SDP protocol format. 5. The method according to claim 1, characterized in that the server confirms the receipt of the response with an ACK request, thereby ending the connection establishment phase and starting the conversation phase.

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