[SENDFAX] The call dropped prematurely


I m using “sendfax” application in ASterisk

50% of time i receive error like “The call dropped prematurely” when i am sending a fax (while the remote fax device is connected and working fine)

Could you help on this?
Maybe could you provide sip.conf optimized for fax sendings ?

Thks very much


Any help pls?


i ve still the same issue in around 10% of problems

Example (asterisk 1.8)

[Nov 7 17:29:16] NOTICE[20048]: res_fax.c:1096 generic_fax_exec: Channel ‘SIP/VOIP-OUT-00000001’ did not return a frame; probably hung up.