Hi,
My coworker asks me what is the difference between G.711 and T.30 in RTP
packets, they all are enclosed in RTP packets with the same payload size. I
remembered T.30 was based on HDLC, but not clear how to implement it in
Internet. Do SIP devices supporting T.30 use HDLC binary datas as RTP payload?
I know that SIP devices could specify free and valid payload type value for
T.30.
Thanks,
jc.huang
2006-12-20
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