Hi Miroslav,
It sounds like you don't really understand what T.38 is. You need some form of modem to get from a normal FAX machine to a T.38 channel. spandsp can do that. A normal FAX modem can do that. You need a modem somewhere, though. That is why developing the FAX modems was the first step towards providing T.38.
Regrds, Steve
Miroslav Nachev wrote:
Dear Steve,
SU> So how does the FAX get from the fax machine to the T.38 channel SU> with spandsp?
In our case we will try to strip spandsp and will use directly OpenH323. We do tests for compatibility with one of the biggest national telecom and if they are OK, they will offer Asterisk based IP PBX to their clients instead Cisco. That's why we need of T.38 and G.711 fax capabilities. Also we have the problems with the following tests: 1. When Dialing of unallocated number the resposne must be "Invalid Number", but the result is one of the following: Hangup, Congestion or Busy. 2. CLIP/CLIR User provided verified and passed - We can't find where we can set this bits for this services. 3. Fax T38 / g711 4. Codec negotiation: when 2 codecs are possible (G.711 and G.729), the two parties can't negotiate which codec to use.
Best Regards, Miroslav Nachev
Miroslav Nachev wrote:
SU> and exactly how does that get the FAX into the T.38 channel? :-\
Using G.711 or implementing T.38 in Asterisk or adjusting Asterisk to OpenH323 T.38. From our expirience Asterisk detect that the line is with Fax data. The problem is what next.
So how does the FAX get from the fax machine to the T.38 channel with spandsp?
Regards, Steve
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