Facsimile method based on voice over internet protocol (VOIP) and system thereof

Abstract

The invention discloses a facsimile method based on voice over internet protocol (VOIP) and a system thereof, aiming at solving the problem that the compatibility of gateway devices of facsimile equipment in the prior art is poorer, thus causing higher facsimile failure rate. The method comprises the following steps that: when receiving a first facsimile signal for representing the transmitting of the facsimile, a first gateway device of a facsimile transmitting end switches the state of the first gateway device to the facsimile state and uses an encoding mode corresponding to the facsimile state to transmit the facsimile; and when receiving a second facsimile signal for representing the receiving of the facsimile, a second gateway device of a facsimile transmitting end switches the state of the second gateway device to the facsimile state and uses the encoding mode to receive the facsimile. By adopting the technical scheme, the invention improves the compatibility among different gateway devices, thus improving the success rate of the facsimile.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a VOIP (Voice over Internet Protocol, Voice over Internet Protocol)-based facsimile method and a VOIP-based facsimile system. Background technique [0002] At present, the terminal equipment on the network such as NGN (Next Generation Network, next generation network), IMS (IP Multimedia Subsystem, multimedia subsystem) (the terminal equipment is mainly gateway equipment), the fax method adopted by the fax is mainly through the controlled T38 and controlled T30 to realize fax; the existing fax method is largely limited by the protocol compatibility between various types of products and the core network where various terminal devices are located, and the configuration of terminal devices is also relatively It is more complicated, for example: the controlled implementation methods of the terminal equipment produced by each terminal equipment manufacturer are different, a...

AI Technical Summary

Problems solved by technology

[0002] At present, the terminal equipment on the network such as NGN (Next Generation Network, next generation network), IMS (IP Multimedia Subsystem, multimedia subsystem) (the terminal equipment is mainly gateway equipment), the fax method adopted by the fax is mainly through the controlled T38 and controlled T30 to realize fax; the existing fax method is largely limited by the protocol compatibility between various types of products and the core network where various terminal devices are located, and the configuration of terminal devices is also relatively It is more complicated, for example: the controlled implementation methods of the terminal equipment produced by each terminal equipment manufacturer are different, and the T38 or T30 fax method is also adopted, but the controlled methods are different

In addition, when using the T30 fax mode or the T38 fax mode, related configurations need to be performed on the terminal equipment and the softswitch, such as: configuring an SDP (Session Descriptive Protocol, Session Description Protocol) template on the softswitch, and configuring Controlled mode: because the SDP template configured on each softswitch is not standardized in sending SDP signaling, or the controlled mode configured by each terminal device adopts different bearer methods, etc., resulting in actual communication between terminal devices. There is a compatibility problem in the application, which leads to a high fax failure rate

Images