asterisk users - Oct 2012 - Asterisk 10 + Sangoma A104 + T.38 gateway

Hi All,

have anybody done T.38 Fax Gateway successfuly on Asterisk using Sangoma cards?

When I try to send fax from Zoiper to ReceiveFAX - it's OK.
When I try to send fax to PSTN, through Sangoma card - it is always
failure. I have checked clocks and other parameters, but it always
fails.

Regards,
Jarek