Voice interface call control method based on sip protocol

Abstract

The invention discloses an SIP (Session Initiation Protocol)-based voice interface call control method. The method comprises the following steps: transmitting a message to a master control board by an expansion board and assigning a unique IP (Internet Protocol) address to the expansion board by the master control board according to an MAC (Media Access Control) address carried by the message; setting the IP address by the expansion board, then requesting the IP from the master control board again and responding and confirming the IP by the master control board; reporting voice interface information on the expansion board by the expansion board through a TR069 protocol; and recording the voice interface information by the master control board and meanwhile configuring parameters for each voice interface by using an SIP standard field and in combination with the IP. The method realizes automatic discovery of a module port resource on gateway equipment on soft switch equipment and needs not to introduce a logic number; only a single SIP is required for signaling mark and processing of an analog port resource in a calling process; and the problems of large expenditure and complexity brought by an sip registration mode or an mgcp (Media Gateway Control Protocol) mode are solved.

Description

technical field [0001] The invention specifically relates to a voice interface call control method based on the SIP protocol. Background technique [0002] Voice gateway devices generally have three types of voice interfaces: FXS interface, FXO interface, and E1 interface. If the communication between the gateway device and the softswitch device uses the SIP standard protocol method, the general method is that the gateway device uses a certain logical number to Each analog port (that is, voice interface) is registered to the softswitch device, that is, the main control board device, and then the gateway device uses this logical number to identify the From field when calling the softswitch device, and the softswitch device then authenticates and completes the subsequent call control. However, this analog port identification method needs to create a large number of logical numbers in the softswitch device. For example, a 96-port gateway device needs 96 PBX interface logical nu...

AI Technical Summary

Problems solved by technology

However, this analog port identification method needs to create a large number of logical numbers in the softswitch device. For example, a 96-port gateway device needs 96 PBX interface logical numbers, and 32 FXO interface gateway devices also need 32 logical numbers; for E1 As far as the interface is concerned, since the E1 interface supports multiple concurrent calls, the use of such a logical number is likely to cause confusion with the real caller

In addition, due to the registration mechanism, for softswitch equipment, the introduction of logical numbers is also likely to cause confusion with the extension number of the softswitch equipment itself, which is inconvenient for management and maintenance

[0003] The voice gateway device can also use the master-slave control protocol such as MGCP protocol to realize the mapping of the analog port with the softswitch device, but the introduction of the MGCP protocol will not increase the complexity of the software and increase the overhead. The above two methods are both complicated and low-cost. effect

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