Sinnreich, Henry.
Internet Communications Using SIP : Delivering VoIP and Multimedia Services with Session Initiation Protocol / Sinnreich Henry, Johnston Alan B.. - New York : Wiley & Sons, 2001. - XX, 298 s.: il.; 24 cm.
0471413992
Internet Communications Using SIP : Delivering VoIP and Multimedia Services with Session Initiation Protocol / Sinnreich Henry, Johnston Alan B.. - New York : Wiley & Sons, 2001. - XX, 298 s.: il.; 24 cm.
0471413992