[asterisk-users] OT: Asterisk 1.2.X, IAXModem 0.2.0 + HylaFAX+ 5.0.3 interop probl em

[Colin Anderson]

When I have HylaFAX answer a call redirected to the fax extension in
Asterisk when it detects CNG, Asterisk hangs up:

Jan 30 14:32:59 VERBOSE[1098]:     -- IAX2/ttyIAX0552/12 is ringing
Jan 30 14:32:59 VERBOSE[1098]:     -- IAX2/ttyIAX0552/12 answered Zap/23-1
Jan 30 14:32:59 DEBUG[1098]: Ooh, voice format changed to 8
Jan 30 14:33:01 VERBOSE[1098]:     -- Channel 0/23, span 1 got hangup
Jan 30 14:33:01 DEBUG[1098]: Didn't get a frame from channel: Zap/23-1
Jan 30 14:33:01 DEBUG[1098]: Bridge stops bridging channels Zap/23-1 and
IAX2/ttyIAX0552/12
Jan 30 14:33:01 DEBUG[1098]: We're hanging up IAX2/ttyIAX0552/12 now...
Jan 30 14:33:01 VERBOSE[1098]:     -- Hungup 'IAX2/ttyIAX0552/12'
Jan 30 14:33:01 DEBUG[1098]: Exiting with DIALSTATUS=ANSWER.

When I direct-dial HylaFAX with a handset, HylaFAX answers, I hear it's tone
from IAXmodem, and Asterisk does NOT hang up. 

alaw and slin codecs do the same thing. 

fax extension:

exten => fax,1,Dial(IAX2/ttyIAX0552/${DNID})

direct extension:

exten => 0552,1,Dial(IAX2/ttyIAX0552/${DNID})

Anybody got a hint?