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

K Song, CL Ting, C Lin - US Patent 7,586,903, 2009 - Google Patents
(57) ABSTRACT The Instant Messaging capability of an IP multimedia sub system is utilized
to support call transfer service for VoIP users. A call transfer request from a first VoIP user to …

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

K Song, C Ting, C Lin - US Patent 7,586,903, 2009 - freepatentsonline.com
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 …

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

K Song, CL Ting, C Lin - US Patent App. 11/148,758, 2006 - Google Patents
Abstract 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 …

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

K Song, C Ting, C Lin - US Patent App. 11/148,758, 2006 - freepatentsonline.com
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 …