Olá
Nada que o google não resolva:
Avaya - A Developer's Introduction to VoIP
DEVELOPING JAVA APPLICATIONS WITH SIP
E o grande projeto doado recentemente pela Ericsson à comunidade Java que ainda poucas pessoas perceberam (foi de onde tirei meu avatar):
SailFin
SailFin Project Description wrote:
SIP (Session Initiation Protocol) and SIP Servlets are behind many popular services we enjoy today, like Voice-over-IP (VoIP) phone service, instant messaging, presence and buddy list management and web conferencing. SIP Servlets are going to play an even bigger part in building the next generation of Telecommunications services. SailFin adds SIP Servlets technology extension to GlassFish Application Server.
[]s
Luca
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