Method for expanding Call-Info header carried service information in SIP information

Abstract

The invention discloses a method for expanding Call-Info header carried service information in SIP information, comprising the following steps: service-param is expanded in the info elements of the Call-Info header in the SIP information and definition of the type of service-param is added; and an application server can add, delete or modify the info elements of the Call-Info header according to the service logic, wherein the info elements include a uniform resource identifier (URI) absolute, info-param and service-param. The method solves the problems of uncertainty and ambiguity existing when the existing Call-Info header is used, supports connect processing of different service logics when a plurality of services simultaneously use the header and simultaneously supports implementation of service interaction when a plurality of services use the header.

Description

technical field [0001] The invention relates to the field of SIP (Session Initiation Protocol, session initiation protocol) network technology, in particular to a method for extending the Call-Info header field in a SIP message to carry service information. Background technique [0002] In SIP networks (such as softswitch networks and IMS networks, etc.), the multimedia ring back tone / multimedia ring tone service provides multimedia information such as text, pictures, electronic business cards, video and audio instead of ordinary ring back tones / ring tones, which can provide users with Provide a richer business experience to meet the individual needs of users. [0003] In the current multimedia ring back tone / multimedia ring tone service, audio / video is generally sent through early media during a call; media resources such as text, pictures, and electronic business cards can be downloaded locally through HTTP: that is, through SIP The Call-Info header field in the message c...

AI Technical Summary

Problems solved by technology

[0008] 1. Since the Call-Info header field itself cannot inform the user equipment what processing to perform when receiving the header field, such as whether to play and when to play, etc., there is uncertainty and ambiguity in actual use

[0009] 2. Since there is no service identification information in the Call-Info header field, when multiple services use the Call-Info header field, it will cause confusion

[0010] 3. When there is business interaction, business interaction cannot be realized

However, since there is no service identification information in the Call-Info header field, the calling application server cannot process the resource information carried in the Call-Info header field

[0011] To sum up, how to solve the uncertainty and ambiguity existing in the use of the existing Call-Info header field, and further realize the support for multiple business interaction functions has become an urgent technical problem in this field.

Images