[asterisk-users] Hylafax asterisk iaxmodem problem

[voip crazy]

Hello all,

I have an asterisk box running in a customer with Hylafax, iaxmodem,
asterisk 1.2.18.

The service can receive faxes, from a lot of fax machines, but there
are a couple of them that asterisk Hylafax cannot complete.

This calls arrive the asterisk box, asterisk detect that this calls
are fax, asterisk answer the call, and then Hangup the call. But
hylafax do not receive nothing.

When I run "zap show channel 1", on the asterisk CLI. The outpuit shows,


File Descriptor: 20
Span: 2
Extension:
Dialing: no
Context: from-zaptel
Caller ID:
Calling TON: 0
Caller ID name:
Destroy: 0
InAlarm: 0
Signalling Type: FXS Kewlstart
Radio: 0
Owner: <None>
Real: <None>
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: no
Relax DTMF: no
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
Echo Cancellation: 128 taps unless TDM bridged, currently OFF
Actual Confinfo: Num/0, Mode/0x0000
Actual Confmute: No
Hookstate (FXS only): Offhook

Why some faxes do not get received?
What could be wrong?

Any clue wil be welcomed.

Thanks in advanced.

VoipCrazy.