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Mapping method for protocol interconnection entity to superposition transmitting-receiving code signalling

A mapping method and entity pair technology, applied in the field of signaling mapping, can solve problems such as excessive resource occupation and complex implementation, and achieve the effect of simple implementation method and less resource occupation

Inactive Publication Date: 2009-09-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of complex implementation of the Overlap message of ISUP defined in RFC3578 and Q.1912.5 to the SIP message mapping mechanism and the shortcomings of occupying too many resources, and to provide a mapping method of protocol interworking entities to overlapping sending and receiving code signaling

Method used

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  • Mapping method for protocol interconnection entity to superposition transmitting-receiving code signalling

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Embodiment Construction

[0020] The invention provides a method for implementing the OVERLAP signaling message of the ISUP by the IWU using the message mechanism of the SIP protocol.

[0021] When the IWU receives the IAM message from the calling party PSTN1, if the existing number is not enough to determine the route, then set the timer and wait for the subsequent SAM; The IWU or SIP server sends an INVITE request, and the called number in the Request-line (request line) field is all the numbers on the PSTN1 side received by the current IWU (ie IWU1);

[0022] When IWU1 receives the subsequent SAM, it sends an INFO request to the adjacent IWU / SIP server IWU2. The From (including tag), Call-ID, and To of the INFO are the same as those in the INVITE, and the content in the ISUP package is SAM. The called number in the Request-line field is all the numbers on the PSTN side received by the current IWU;

[0023] The IWU / SIP server IWU2 receives the INVITE message from the adjacent IWU1. If it thinks that...

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Abstract

The invention discloses a method for mapping overlapping transceiving code signaling by a protocol interworking entity, which includes the following steps: when the first IWU receives enough numbers to judge the route, it sends an INVITE request to the second IWU or a SIP server; the second IWU Or the SIP server sends IAM information to the called PSTN side, and the IAM information is generated by the first IWU according to the received IAM and SAM; when the first IWU receives the subsequent SAM, it sends an INFO request to the second IWU or SIP server, and the INFO request The From tag, Call-ID, and To are the same as the From tag, Call-ID, and To in the INVITE request. The called number in the Request-line field of the INVITE request and the INFO request is the calling PSTN temporarily received by the first IWU. All numbers sent by the PSTN side; the second IWU or SIP server sends a SAM to the called PSTN side, and returns a 200 response to the first IWU. In the present invention, mutual mapping between ISUP OVERLAP signaling and SIP / SIP-I signaling is carried out through the IWU, which ensures that the signaling can pass through multiple IWUs, and the implementation method is simple and occupies less resources.

Description

technical field [0001] The present invention relates to a signaling mapping method in a communication device, in particular to a method for realizing IWU (Interworking Unit, protocol interworking entity) to OVERLAP (overlapped transceiver code) signaling through a message mechanism in SIP (SessionInitiation Protocol, Session Initiation Protocol). The mapping method. Background technique [0002] RFC3261 (Request for Comments: 3261, published in June 2002, section 10.1, pages 56-57) specifies the signaling interface between SIP servers. TRQ.2815 and Q.1912.5 promulgated by the ITU organization stipulate a SIP signaling interface (SIP-I) carrying ISUP (ISDN User Part, ISDN User Part) information between IWUs. When either the calling party or the called party is a PSTN (PublicSwitched Telephone Network, public switched circuit network) user, and the call signaling passes through at least two IWUs, the IWUs are required to be able to map the ISUP signaling into SIP / SIP-I signal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04M3/00
Inventor 丁传锁戴玉宁施浩
Owner STATE GRID CORP OF CHINA
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