Implementing method, system and apparatus for IMS listening

Abstract

An embodiment of the invention discloses a method for realizing IMS monitoring, a system and a device thereof, wherein the method comprises the following steps: allocating a medium anchoring point for the communication sides; and duplicating the communication content when the communication sides do communication through the medium anchoring point for completing the monitoring to the communication content. According to the invention, the monitoring to the communication content can be realized on the medium anchoring point and is not compulsorily realized by the existing medium access device, thereby realizing the centralized monitoring of medium on IMS and ensuring that the subscribers which are accessed into the IMS with various modes can realize centralized monitoring of medium on the IMS core. No requirement exists for the access side device, and furthermore expanded private interface is not required between the IMS core and the access side device.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to an implementation method, system and device for IMS monitoring. Background technique [0002] IMS (IP Multimedia Subsystem, Internet Protocol Multimedia Subsystem) uses the packet domain as the bearer channel for upper layer control signaling and media transmission, and uses SIP (Session Initial Protocol, Session Initiation Protocol) as the service control protocol to combine service control and bearer Control is separated to provide rich multimedia services. IMS is the target network of the telecom core network and occupies a very important position in the telecom network. It can conveniently integrate the integration capabilities of mobile and fixed multiple access networks, and is increasingly supported by telecom equipment manufacturers and operators. [0003] Lawful interception means that the national security agency, under the authorization of the law, sets...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the monitoring process needs to be completed through the interface between P-CSCF and SPDF, and the interface between SPDF and A-BGF, but the above-mentioned interface does not Uniform standards, difficult when docking

Moreover, when supplementary services occur on the IMS core, call signaling and media streams do not pass through the P-CSCF and A-BGF where the called user belongs, and use the P-CSCF to which the monitored user belongs to control the A-BGF to copy the media for monitoring. monitoring of supplementary services

When a user roams to other networks, the user's access control is implemented by the P-CSCF of the roaming network instead of the P-CSCF of the home network, so that the home network cannot perform media monitoring on users roaming to other networks

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