Hi I have a question regarding the handshake signals in V.92 which I need to detect. My objective is to detect modem handshake signals without the need to distinguish between them.
The Qc1X are easy to detect as they begin with 10 one at V.21 modulation. What about: QC2a QCA2a QC2d QCA2d?
The ITU recommendation says these signals use the structure defined in clause 7/V.8 bis and the information field structure defined in clause
8/V.8 bis. Does it mean that they are all preceded by the message preamble defined in V.8 bis as well?
Do you know a better source of info than the ITU recs?
thanx
Momo