asterisk users - Oct 2009 - Fax with a AEx410P and Beronet BN4S0 => Sending Problem

Hi all,

I have problem with one of my configuration :


FAX <-----> AEX410P (One FXS port) <---> BN4S0 <----> PSTN


Case 1 : Receiving Fax  is Ok ( PSTN ---> BN4SO --> AEX410P --> FAX )

Case 2 : Sending Fax is nok ( FAX ---> AEX410P --> BN4SO --> PSTN )

 I think we have some synchronisation problem because , de beginning
of the fax is correct but I have some blank line on document and
Asterisk do not release the line.

This is the result of dahdi show channel 1 :


Channel: 1LI>
File Descriptor: 13
Span: 1
Extension:
Dialing: no
Context: from-internal
Caller ID: 70
Calling TON: 0
Caller ID name: device
Mailbox: 70 at device
Destroy: 0
InAlarm: 0
Signalling Type: FXO Kewlstart
Radio: 0
Owner: <None>
Real: <None>
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: no
Busy Detection: no
TDD: no
Relax DTMF: no
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
DND: no
Echo Cancellation:
        128 taps
        (unless TDM bridged) currently OFF
Actual Confinfo: Num/0, Mode/0x0000
Actual Confmute: No
Hookstate (FXS only): Onhook


And this is configration of midn port :

[PORT 2]
 -> name: swisscom                   -> allowed_bearers: all
 -> far_alerting: no                 -> rxgain: 0
 -> txgain: 0                        -> te_choose_channel: no
 -> pmp_l1_check: no                 -> reject_cause: 21
 -> block_on_alarm: no               -> hdlc: no
 -> context: ext-did-0002            -> language: en
 -> musicclass: default              -> callerid:
 -> method: standard                 -> dialplan: 0
 -> localdialplan: 0                 -> cpndialplan: 0
 -> nationalprefix: 0                -> internationalprefix: 00
 -> presentation: -1                 -> screen: -1
 -> always_immediate: no             -> nodialtone: no
 -> immediate: no                    -> senddtmf: no
 -> astdtmf: no                      -> hold_allowed: no
 -> early_bconnect: yes              -> incoming_early_audio: no
 -> echocancel: 128                  -> need_more_infos: no
 -> noautorespond_on_setup: no       -> nttimeout: no
 -> bridging: yes                    -> jitterbuffer: 4000
 -> jitterbuffer_upper_threshold: 0  -> callgroup:
 -> pickupgroup:                     -> max_incoming: -1
 -> max_outgoing: -1                 -> l1watcher_timeout: 0
 -> overlapdial: 0                   -> msns: *
 -> faxdetect: no                    -> faxdetect_context:
 -> faxdetect_timeout: 5             -> ptp: no


Somebody already have this problem ?

Thanks for your precious help,

Vincent