Mechanism to resume filter criteria at a specific point

Patent metadata

Field	Value
Publication number	US-9094411-B2
Application number	US-14810008-A
Country	US
Kind code	B2
Filing date	Apr 16, 2008
Priority date	Apr 16, 2008
Publication date	Jul 28, 2015
Grant date	Jul 28, 2015

Abstract

The present invention provides a method and an apparatus for resuming the evaluation of initial Filter Criteria (iFC) at a specific point. Two new parameters are defined for inclusion in the service logic of application servers and serving Call Session Control Function (S-CSCF) servers. The first parameter, an iFC index parameter, is a number which indicates an index to a current specific position in the iFC evaluation. The S-CSCF may insert the iFC index parameter into route headers of SIP messages that originate from the S-CSCF to the application servers. The second parameter, an iFC resume parameter, is based on the iFC index parameter or another number along with an original dialog identifier, which the application servers may insert into route headers of SIP messages that originate from the application servers to the S-CSCF to indicate a desire to resume operations at the specific position in the iFC evaluation.

First claim

What is claimed:

1. A method to resume initial filter criteria (iFC) evaluation at a specific point in a Serving Call Session Control Function (S-CSCF), the method comprising the steps of:
sending, at the S-CSCF to an application server, a Session Initiation Protocol (SIP) INVITE message that has an iFC index parameter in a route header of the SIP INVITE message, wherein the iFC index parameter is a number indicative of a specific position in the iFC evaluation;
receiving, at th…

Assignees

• Henrikson Eric H
• Remoquillo Angelica T
• Alcatel Lucent

Inventors

• Henrikson Eric H
• Remoquillo Angelica T

Classifications

• H04L65/1016 Primary

  Electricity · mapped topic

• H04L67/16

  Electricity · mapped topic

• H04L67/51

  Electricity · mapped topic