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Method, equipment and system for circuit domain user to call IMS domain user

A technology for circuit domain and domain users, applied in the field of communication, can solve the problems of increasing the cost of operators' equipment and increasing the delay of number analysis, and achieve the effect of reducing equipment cost and complexity.

Inactive Publication Date: 2010-03-03
HUAWEI TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when the called party belongs to different operators, the numbers are often discrete, which requires a large amount of data configuration, which increases the complexity of user data configuration, increases the time delay of number analysis, and requires a lot of storage capacity to store these numbers, which increases the operator's equipment cost

Method used

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  • Method, equipment and system for circuit domain user to call IMS domain user
  • Method, equipment and system for circuit domain user to call IMS domain user
  • Method, equipment and system for circuit domain user to call IMS domain user

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] When a PSTN user calls an IMS domain user, the MGCF of the gateway office converts the IAM message into an INVITE message of the SIP protocol, and sends the INVITE message to the I-CSCF of the IMS network through number analysis, and the I-CSCF queries the HSS Obtain the S-CSCF to which the called number belongs, so as to connect the called user's phone.

[0035] refer to figure 1 , taking a PSTN user in a place to dial a phone number in a place B as an exa...

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Abstract

The embodiment of the invention provides a method, equipment and a system for a circuit domain user to call an IMS domain user, relating to the communication field and being capable of reducing the complexity of data configuration and reducing the equipment cost. The method comprises the following steps: receiving a message containing called number information, carrying the called number information into an inquiry request message and sending to telephone number mapping ENUM equipment; receiving a feedback message from the ENUM equipment, wherein the feedback message contains address information of a destination inquiry call session control function I-CSCF corresponding to the called number; and sending a call request message to destination I-CSCF according to the address information of destination I-CSCF. The embodiment of the invention is used for the circuit domain user to call the IMS domain.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, equipment and system for a circuit domain user to call an IMS domain user. Background technique [0002] According to the standard process of the 3GPP protocol, when PSTN (Public Switched Telephone Network, public switched telephone network) / PLMN (Public Land Mobile Network, public land mobile network) and IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) intercommunicate, tel URI is used as Caller ID. [0003] When a PSTN user calls an IMS domain user, the MGCF (Media Gateway Control Function, Media Gateway Control Function) of the gateway office needs to configure the addresses of all I-CSCF (Interrogating Call Session Control Function, Inquiry Call Session Control Function), and the MGCF queries to obtain the destination After the I-CSCF, it initiates a call to the I-CSC, and then the I-CSCF obtains the S-CSCF (Serving CSCF, Serving CSCF) to which the called n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04M7/12
Inventor 林宏达熊福祥李云峰
Owner HUAWEI TECH CO LTD
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