I can't get right with elastix fax (elastix 1.6 32 bit) over TDM using sangoma a101d card. Faxes works only from time-to-time in a both direction. When I try to send fax caller can connect, start sending and have transmission finished without any errors, but hylafax did not finish transmissions and fax are not visible in fax visior. I can receive 1 on 10 sent faxes and sent 1 on about 12 sent. Changing tx and rx gain values in chan_dachdi.conf does not improve fax performance at all.