A method of facilitating P-CSCF restoration when a P-CSCF failure has occurred is
disclosed. The method comprises a Proxy Call Session Control Function,'P-CSCF'receiving …

Methods and apparatus facilitate recovery of an IMS in which an S-CSCF has suffered a
restart (after a failure, software upgrade, or other reasons). One or more of first and second …

Methods, systems, and computer program products for inhib iting message traffic to an
unavailable terminating SIP server are disclosed. According to one method, at least one list …

Methods and apparatus for alternative billing of VoIP services are disclosed. An example
method comprises receiving an indication at a voice over Internet Protocol (VoIP) device that …

Abstract Systems, methods, and apparatuses for correlating intercept related information
(IRI) with call content (CC) for S8HR lawful interception are provided. The method may …

A method of providing a voice mailbox function in a PoC service, including: if the voice
mailbox of at least one called user is to be connected in response to receiving a session …

A method is disclosed which sets a PoC Box service and transmits information on a service
identifier by using a standard SIP, a SDP, an XCAP, and a PAP, in order to remain …

Methods and systems for providing SIP trunk groups are disclosed. A SIP call processor
identifies an incoming SIP trunk group based on one or more parameters associated with an …

The present invention relates to an S-CSCF receiving a terminating request associated with
a called user and executing services for the called user. The S-CSCF determines an …

Apparatuses and methods are disclosed for P-CSCF restoration. In one START
embodiment, a method includes receiving a P-CSCF restoration message, the P-CSCF …