Personalization of internet telephony services for presence with SIP and extended CPL

This paper discusses issues of personalization of presence services in the context of Internet Telephony. Such services take into consideration the willingness and ability of a user to communicate in a network, as well as possibly other factors such as time, address, etc. Via a three-layer service architecture for communications in the Session Initiation Protocol (SIP) standard, presence system basic services and personalized services (personal policies) are clearly separated and discussed. To enrich presence related services, presence information is illustratively extended from the well known "online" and "offline" indicators to a much broader meaning that includes "location", "lineStatus", "role", "availability" etc. Based on this, the Call Processing Language (CPL) is extended in order to describe presence related personalized services for both call processing systems and presence systems using information such as a person&...

• Type: Journal
• Year: 2006
• Where: COMCOM
• Authors: Dongmei Jiang, Ramiro Liscano, Luigi Logrippo
• Keywords: COMCOM 2006, Personal Policies, Presence Related Services, Presence Services