HT802 FXS port 1 not working for faxing


Been trying to provision a grandstream HT802 to a Bicom system and its showing as registered and regular calls to outside DIDs work, however when sending a fax through the ATA it keeps ringing busy.


Codec support may need to be looked at on Bicom and HT802.

Have you enabled t38 pass through ?

Ideally a packet capture of the call that works and one that fails is best to see whats happening at either end.

Can you do a packet capture?


passthrough has been enabled and now getting a poor line condition error instead of flat out fail. seems to be a promising sign, will take pcap shortly.