Brooktrout fax port returned "No response to MPS, repeated three times" or "No response to EOP repeated three times"Link: http://www.extracomm.com/Extracomm/FAQ.NSF/FAQs/944008508c6391c048257b66000f1828Apply to:
ExtraFax for Exchange; ExtraFax for Domino Last Modified Date: 11/05/2018
You can try this Dialogic's suggestion:
Increase the T4 timer is with a parameter in btcall.cfg called "t4_xmit_timer" which was introduced in Dialogic Brooktrout Fax SDK 6.4. The units for this parameter are in ms and the range is 3000 to 15000.
t4_xmit_timer may be added to btcall.cfg if it is not already there. It is not accessible from the Dialogic Brooktrout Fax Configuration Tool. If a need exists to change this parameter, we would suggest using a starting value of 6000 and increasing it slowly as it is possible that setting the value too high could cause the receiving end to hang up the call.
For details, please see this link: