My setup is as follows:
Serial port based device(Caller)->Dlink dialup modem(DFM562E)->PBX->Sangoma A102 E1 Link(and FreeSWITCH)->PBX->Dlink dialup modem(DFM562E)->Server(Receiver)
Problem:
When the caller makes the call (using the modem with a lower baud rate 1200), Receiver modem receives the RING and answers the call (using the ATA command). But for some reason, both the ends timeout waiting for modem CONNECT.
Are you sure there is no echo cancellers in the middle (make sure you have an A102 without echo canceller or that you disable it in wanpipe). You can always make sure you disable the ec in the dialplan too (<action application="disable_ec">)
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