Application server by-passing method and service type call session control functional equipment

Abstract

The invention relates to an application server by-passing method, which comprises: when service type call session control functional equipment receives a call request, detecting a signaling used for communication between the service type call session control functional equipment and an application servers in an application server list, and determining if the service of the application server is interrupted; if service of the application service is interrupted, determining the application server as a fault application server; and according an initial filtration rule, continuing to complete the service triggering and subsequent call processing of application servers excluding the fault application server in the application server list. The invention also relates to the service type call session control functional equipment. In the invention, through a by-pass AS mode, that the call of a user cannot be interrupted due to the fault in a certain AS is ensured. In case of interruption between an S-CSCF and a PES / PSS AS, the communication safety of the user can be guaranteed to a maximum degree by by-pass operation, so the possibility for the large-area interruption of an IMS service is lowered greatly.

Description

Technical field [0001] The invention relates to IP Multimedia Subsystem (IMS for short) network technology, in particular to a method for implementing application server (AS) bypass in an IMS network and a service-type call session control function (Serving Call Session Control Function, S-CSCF for short) equipment. Background technique [0002] With the advantages and gradual improvement of IMS technology, it has been generally recognized by operators and has been widely used in the next-generation network architecture of operators' business integration and transformation strategies. AS is a functional entity built on the IMS network, which makes full use of the various functions provided by the IMS network to provide users with supplementary services and value-added multimedia services. [0003] When an IMS user is a calling or called party, the S-CSCF registered by the user needs to trigger the service to the corresponding AS according to the user's initial filter criteria (Ini...

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Problems solved by technology

[0008] 3. The S-CSCF registered by the calling user ends the call, and the call fails

[0015] 6. The signaling connection between the S-CSCF registered by the called user and the AS is abnormal, and the S-CSCF fails to trigger the service;

[0016] 7. The S-CSCF registered by the called user ends the call, and the call fails

[0017] From the above two examples, it can be seen that once the signaling connection between the S-CSCF and the AS is abnormal, the service will fail and the call will end, which will inevitably bring bad experience to the user

In addition, in the IMS system, all basic conversations of all users as calling and calling parties must be sent to the supplementary service application platform (PES / PSS AS) to trigger supplementary services. If the S-CSCF and PES / PSS AS are interrupted, it may even cause All users cannot call in or out, causing large-scale communication security incidents and seriously affecting communication security

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