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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 the problems of complex implementation and excessive resource occupation, and achieve the effect of simple implementation method and less resource occupation

Inactive Publication Date: 2006-12-13
STATE GRID CORP OF CHINA +2
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  • 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 PSTN 1, 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 of the user 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 i...

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Abstract

The invention discloses an overlapping transmitting-receiving code signaling mapping method of protocol interconnecting solid, which comprises the following steps: the first IVVU receives enough number to judge route, which sends INVITE request to second IVVU or SIP server; the second IVVU or SIP server sends IAM information to called PSTN side, which is generated by the first IVVU according to received IAM and SAM; the first IVVU receives subsequent SAM to send INFO request to the second IVVU or SIP server, which contains the same From tag, Call-ID, To in the INFO request and INVITE request; the called number in the Request-line field of INVITE request and INFO request is all numbers of calling PSTN side received by first IVVU temporarily; the second IVVU or SIP server sends SAM to called PSTN side, which returns 200 sound to the first IVVU.

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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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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