Realization method for opening call state capability and system

A call state and capability open technology, applied in the field of network communication, can solve the problem of heavy processing load of PSS and SAG, and achieve the effect of reducing functional upgrade requirements, processing load requirements, functional upgrade and performance pressure.

Active Publication Date: 2012-02-01
CHINA TELECOM CORP LTD
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Problems solved by technology

[0041] In this method, the PSS needs to publish the state change to the SAG regardless of whether the third-party appl

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  • Realization method for opening call state capability and system
  • Realization method for opening call state capability and system
  • Realization method for opening call state capability and system

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Embodiment Construction

[0074] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0075] The present invention proposes a method and system for implementing IMS PSS-based call status query and subscription capability openness. Through a reasonable division of labor between SAG and PSS, it overcomes the large amount of PSS upgrades and high processing performance requirements of other current methods. disadvantages, and can adapt to the network characteristics of IMS PSS sub-area settings.

[0076] see Figure 5 As shown, it is a system framework for implementing call state capability exposure in an embodiment of the present invention. The system includes: SAG, Serving Call Session Control Function (S-CSCF), Inquiry Call Session Control Function (I-CSCF) and Public Switching Telephone Network (PSTN) / Integrated Services D...

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Abstract

The invention discloses a realization method for opening call state capability and a system; the method comprises the steps that: a subscriber inquires and requests the call state of a user with third party application, third party application access business access network security access gateway (SAG) sends the business request to the SAG that the subscriber belongs to; the SAG that the subscriber belongs to sends a call state subscription request to an interrogating call session control function (I-CSCF); a serving-call session control function (S-CSCF) that a subscribed user belongs to forwards the subscription request to a public switched telephone network/comprehensive business digital network simulation sub-system packet service system (PSS) that the subscribed user belongs to; only when the call state of the terminal of a subscriber list is changed, PSS sends a state updating notice to the SAG; and the SAG that the subscriber belongs to searches a subscription relationship form and determines to forward the state change notice to which application after receiving the state updating notice of the subscribed which is sent by the PSS. The invention can effectively reduce the function upgrading requirement on the PSS, and reduce the processing load requirement on the PSS.

Description

technical field [0001] The invention relates to network communication technology, in particular to a method and system for realizing call state capability opening. Background technique [0002] The opening of telecom network service capabilities includes the opening of self-operated services in trust domains and third-party services in non-trust domains. [0003] Opening service capabilities to third parties in non-trust domains requires telecom operators to deploy special service capability access gateways (SAG) and service capability management platforms (SMP) between the telecom network and third parties. Among them, SAG provides the technical realization of the third party's ability to access telecommunications network services. [0004] SAG provides standard APIs for third parties (northbound) for use by third parties. The standards jointly developed by Parlay, ETSI and 3GPP include the following capabilities: [0005] Third Party Call (third party call); [0006] Ca...

Claims

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Application Information

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IPC IPC(8): H04W8/18H04W88/18
Inventor 冯建强张园赵德欣黄倩
Owner CHINA TELECOM CORP LTD
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