Our Company’s 2 way multimedia communication system
protocols are ITU-T H.323, ITU-T.324/H.324-M and IETF
SIP (Session Initiation Protocol). And these are the
special features for each system.
H. 323 is the definition of the technical requirements
of audio/video contained multimedia communication on the
LAN. Our company supplies audio/Video/Data Codec and RTP/RTSP
transport/session protocol, and providing H.245 control
for System Control Part, RAS (Registration/Admission/Status)
protocol for Q.931 call setup, Gatekeeper interface.
H. 323 is the definition of the technical requirements
for very low bit-rate multimedia telephone terminal on
GSTN (General Switched Telephone Network), our company
supplies H.324 system through adding H.223 multiplexing
technology above H.323 technology. We don't supply the
modem technology(V.34/ V.8/ V.25ter) to connect GSTN,
but supplies Mobile Extension (H.324-M) part.
