SIP
SIP (. Session Initiation Protocol ) , -, (- , , -).
SIP .
, (, ) , , , , . , (, RTP). , ( -). .
IETF MMUSIC Working Group. 1996 (Henning Schulzrinne, ) ). 2000 SIP 3GPP IMS 3GPP TS.24.229). c H.323, SIP , Voice over IP.
MMUSIC :
: ()
, UDP, TCP, ATM . .
. . . . REGISTER.
. SIP .
. .
. SIP , IETF. SIP, RSVP (), RTP, RTSP, SDP.
. SIP IP-, , .
SIP.
H.323
, ITU-T H.32x. .
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ITU-T, H.323, , (QoS). H.323 IP, , . , , . H.323 , (-) ( ) .