Call blind transfer method and call blind transfer system based on sip protocol

A SIP protocol, blind transfer technology, applied in transmission systems, electrical components, special services for subscribers, etc., can solve the problem of inability to improve the reliability of signaling messages, achieve good scalability and implementability, simplify the sending process, ensure The effect of reliability

Active Publication Date: 2017-12-19
宋易霄
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  • Claims
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AI Technical Summary

Problems solved by technology

Although these improvements can facilitate the use of users to a certain extent and increase the probability of user calls, these improvements are mainly proposed through the research on terminals between devices, which is beneficial to the convenience and success rate of call transfer, but they cannot be obtained from The reliability of network transmission to improve the reliability of signaling messages

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  • Call blind transfer method and call blind transfer system based on sip protocol
  • Call blind transfer method and call blind transfer system based on sip protocol
  • Call blind transfer method and call blind transfer system based on sip protocol

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with accompanying drawing of description:

[0038] Such as figure 1 As shown, the call blind transfer system based on the SIP protocol disclosed in this embodiment is mainly composed of five parts: softswitch server 1, media server 2, transferred party user 3, transfer service party user 4, transfer target party User 5. The softswitch server 1 is the core module of the system, the media server 2, the transferred party user 3, the transferred service party user 4, and the transferred target party user 5 are respectively connected with the signal, and the signaling is based on the SIP protocol. Softswitch server 1 assumes the function of SIP proxy server in the basic call flow of user 3 and user 4, and supports the call holding service of both, and can directly initiate a message request to the terminal in the subsequent transfer service to complete the blind transfer service . The media server is res...

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PUM

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Abstract

The invention discloses a call blind transfer method based on the SIP protocol and a corresponding call blind transfer system. The process signaling of the blind transfer method is based on the SIP protocol, and a softswitch server is used to directly initiate a Refer message and an Invite message, thus abandoning the traditional dependence Based on the method of sending SIP messages on SIP terminal equipment, it is proposed to realize the call blind transfer function based on the SIP protocol without relying on the terminal equipment. The call transfer service party, call transferee, and transfer target party can be realized as long as they support the RFC3261SIP protocol , which avoids the forwarding failure caused by terminal incompatibility, simplifies the sending link, and has good scalability and implementability.

Description

technical field [0001] The invention relates to a call blind transfer method in communication and a corresponding call blind transfer system, in particular to a call blind transfer method based on the SIP protocol and a corresponding call blind transfer system. Background technique [0002] The technology of the communication industry is changing with each passing day, and the NGN network technology has become the leading technology in the communication field. Among them, the softswitch device is the core device for the evolution from the circuit switching network to the packet network, and also plays a pivotal role in the NGN network. It is independent of the underlying bearer protocol, and mainly completes the main functions such as call control, media gateway intervention control, resource allocation, protocol processing, routing, authentication, and billing. The transmission reliability of softswitch equipment is high, and the dependence on terminal equipment is small. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04M3/42H04M3/58
Inventor 于宁宁
Owner 宋易霄
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