Call handling method, device, system and audio gateway

Abstract

The invention provides a call handling method, a call handling device, a call handling system and an audio gateway. The method comprises the following steps: after receiving first ring transmitted when a calling terminal initiates a call, setting the state of a passage corresponding to a passage number as an occupied state; and establishing the call between the calling terminal and a called terminal through the passage. The device comprises a foreign exchange office and a passage management device; the foreign exchange office comprises a setting triggering module and a call module; and the passage management device comprises a setting module, wherein the setting triggering module is used for triggering the setting module to set the state of the passage corresponding to the call as the occupied state after receiving the first ring transmitted when the calling terminal initiates the call; and the call module is used for establishing the call between the calling terminal and the called terminal through the passage. The embodiment of the invention also provides the audio gateway and the call handling system. The embodiment of the invention lowers the probability of call collision and realizes normal work of a call line.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular to a call processing method, device, system and voice gateway. Background technique [0002] In the field of voice communication, signal transmission methods include loop start signal mode and ground start signal mode. Among them, the loop start signal method judges whether the phone is picked up (off-hook) or hung up (on-hook) according to whether the current flows through the local loop back to the switch. When the telephone switch in the telephone switchboard room detects the current Flowing in the local circuit indicates that the phone has been picked up, and the telephone exchange notifies the caller to make a call by sending a dial tone. The ground start signal method monitors the ringing prompt of the voltage potential on the line through the telephone switchboard, detects the current through the program-controlled switchboard and the tw...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a call processing method, device, system and voice gateway, which are used to solve the call collision caused by the loop start signal method in the prior art problem, reduce the probability of call collision, and realize the normal operation of the call line

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