Method for implementing call retention and call recuperation of centralized service of IP multimedia subsystem

Abstract

This invention discloses a realizing method of call hold and call recover of IMS centralized business, which is used for realizing the call hold and call recover between the local IMS centralized business UE and remote UE, including following steps: the local IMS centralized business UE sends the request information or call hold or call recover to an IP multimedia sub-system circuit domain control function; the request information takes the media working mode instruction set by the local IMS centralized business UE; the IP multimedia sub-system circuit domain control function respectively sends the corresponding media working mode to the remote UE and a media gateway control function; the remote UE sets the media working mode of its own end based on received media working mode instruction; the media gateway control function sets the media working mode of the media gateway based on the received media working mode instruction. Adopting the method of this invention, the call hold and call recover of IMS centralized business can be realized.

Description

technical field [0001] The present invention relates to an IP (Internet Protocol, IP for short) multimedia subsystem (IP Multimedia Core Network Subsystem, IMS for short), and in particular to a method for implementing IMS centralized service call hold and call recovery. Background technique [0002] The IMS is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP for short). It builds an open and flexible business environment, supports multimedia applications, and provides users with rich multimedia services. [0003] IMS is an IP-based telecommunications network architecture and has nothing to do with access technology. In addition to providing services for packet access networks such as GPRS (General Packet Radio Service) and WLAN (Wireless Local Area Network, wireless local area network), it also provides It can provide services for mobile cellular networks such as GSM (Global System for Mobile comm...

AI Technical Summary

Problems solved by technology

[0033] Therefore, the current method is to directly migrate from the "sending and receiving" state to the "inactive" state, which cannot meet the needs of keeping calls in different states

[0034] (2) In the call hold state, the network usually plays a hold tone to the held UE. If a media indication containing "inactive" is sent to the held UE, the held UE will stop receiving and sending. At this time The network cannot play the hold tone to the held UE, which affects user experience

[0035] To sum up, the current ICS call hold method cannot meet the service requirements of call hold and affect the service experience of the held user

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