Fax not working ATA 190

[AhmadMA43005]

Fax doesn't work when using PRI. we use ATA to connect fax and our gateway is MGCP. to cross check the FAX, we connected to analogue line and its working. when connecting   to PRI using ATA it doesn't work. we are able to make calls, afte call connects it says communication error. 

[Nithin Eluvathingal · Accepted solution]

Can you please share your MGCP configuration ?.And if not configured, add the below command and try.

mgcp modem passthrough voip codec g711alaw

[AhmadMA43005]

Thank Nithin.

it worked.