In one embodiment, a scheme is described with respect to a service network system adapted to interoperate in an Internet Protocol (IP) Multimedia Subsystem (IMS) environment wherein signaling and message media planes are decoupled. The service network system comprises a service gateway controller (SGC) that is decomposed from a plurality of a plurality of service gateways (SGWs) operable to effectuate a message transport interface with respect to a remote services server.

Service gateway decomposition in a network environment including IMS

A communication system provides integrated email, telephone and instant messenger communication including a common address book, a common log of communication history and shared presence information. A user can respond to a communication according to any format, email, telephone or instant messenger, with a response using the same format or any other format. The response may be initiated by a single command.

Systems and methods for providing unified collaboration systems with combined communication log

The present invention relates to a method, system, client device, conference server device and computer program product of controlling media composition in a multi-party conversation involving a central control point (50). At a participant (10) of said multi-party conversation, a scope information (SoM) which specifies members of said multi-party conversation is selected and added to a session modifying request. The session modifying request is transmitted to the central control point (50) which initiates a media modification at the specified members in response to the scope information (SoM). Thereby, a client can control whether media modification is applied to the whole conference, selected participants or only between the client itself and the conference server.

Third-party session modification

A communication apparatus provides services to a communication device. The communication apparatus comprises a private base station for communicating with a communication device authorised to use the private base station and a gateway communicatively coupled to the private base station for providing access to an IP Multimedia Subsystem (IMS) network and at least one other communication network, such as a Circuit Switched (CS) network. The private base station is arranged to select a route for providing a service to the communication device through the private base station and gateway, the selected route being one of a route between the communication device and the IMS network and a route between the communication device and the at least one other communication network. The private base station is arranged to select a route based on the service to be provided.

Communication apparatus for providing services to a communication device through a private base station

A method for matching initial request messages in the IP multimedia subsystem service triggering process comprises: before the S-CSCF forwards an initial request message to the AS, generating a trigger request identifier uniquely and inserting the identifier into the initial request message; then forwarding the initial request message to the AS; and then the AS copies the trigger request identifier in the received message into the initial request message to be sent back; finally, the S-CSCF determines whether a received initial request message is the response to the initial request message sent to the AS by the S-CSCF previously based on the trigger request identifier, determines the corresponding relationship, and then performs the subsequent service control process. With the present invention, the requirement that the S-CSCF must correctly match the initial request message with the one sent back can be satisfied, thus guarantee the normal performance of service triggering.

Method for matching initial request message in the IP multimedia subsystem service triggering process

The Instant Messaging capability of an IP multimedia subsystem is utilized to support call transfer service for VoIP users. A call transfer request from a first VoIP user to a second VoIP user is sent to the IP multimedia subsystem in a predetermined non-standard SIP communication. The IP multimedia subsystem invokes Instant Messaging service in response to the predetermined non-standard SIP communication, and Instant Messaging service is then utilized to support the call transfer dialogue.

System and method for VoIP call transfer using instant message service in an IP multimedia subsystem

A SIP Gateway (SIPGW) coupled to an IP Multimedia Subsystem (IMS) is disclosed that detects when a first party, using a Plain Ordinary Telephone Service (POTS) telephone coupled to the SIPGW and participating in a call, performs a hook flash action In response, the SIPGW sends to the IMS a first SIP INFO message indicating that the POTS telephone has performed the hook flash In response to a first SIP INFO message indicating that a first party has performed a first hook flash, an Application Server (AS) in an IMS places on hold a second party participating in the call The AS may also cause a Media Server to receive information from the first party identifying a call feature to be provided, where the call feature is one of simple call hold, consultation call hold, attended call transfer and unattended call transfer

Apparatus and method for handling call features activated by POTS phones in an IP multimedia subsystem

A configurable multimedia SIP client and method are disclosed. As one example, a configurable multimedia SIP client is disclosed, which includes a client user interface, a call processing configuration manager, and a configuration adaptor coupled to the client user interface and the call processing configuration manager. The configuration adaptor is operable to receive configuration information, extract user interface information and call processing functional information from the received configuration information, convey the user interface information to the client user interface, and convey the call processing functional information to the call processing configuration manager.

Kevin Song

Papers

System and method for VoIP call transfer using instant message service in an IP multimedia subsystem

Apparatus and method for handling call features activated by POTS phones in an IP multimedia subsystem

Configurable multimedia sip client