[asterisk-users] Zap Bridged Channels

[Jeremy Mann]

I have a Sangoma A200DX, and am trying to bridge an FXO channel with FXS for modem connectivity.

I have Zap/8 as a Fax Machine

Zap/5 is my outside line.  When a call rings in on Zap/5 it immediately calls Zap/8 and bridges the channels.  I see it doing a native bridge on the two.  I have echo cancel off on native bridge, but I can never get fax connectivity, it just tries to negotiate forever then eventually hangs up.

Anything special to getting this to work?

Below is an example of CLI output when the Fax Machine tries to call out, it does the same thing, never get the two machines to complete the call and send the fax.  I've also included the CLI output of channel 5's properties, it does show the EC as off.  I noticed it says "Fax Handled: no", is there something I need to enable in Zapata.conf or zaptel.conf?

Would txgain/rxgain be the issue?

CLI Output ------------------------
    -- Starting simple switch on 'Zap/8-1'
    -- Executing [s at from-zaptel-fax:1] Answer("Zap/8-1", "") in new stack
    -- Executing [s at from-zaptel-fax:2] Dial("Zap/8-1", "Zap/5") in new stack
    -- Called 5
    -- Zap/5-1 is ringing
    -- Zap/5-1 is ringing
    -- Zap/5-1 answered Zap/8-1
    -- Native bridging Zap/8-1 and Zap/5-1

localhost*CLI> zap show channel 5
Channel: 5CLI>
File Descriptor: 27
Span: 2
Extension:
Dialing: no
Context: from-internal-fax
Caller ID:
Calling TON: 0
Caller ID name:
Destroy: 0
InAlarm: 0
Signalling Type: FXO Kewlstart
Radio: 0
Owner: Zap/5-1
Real: Zap/5-1
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: yes
Relax DTMF: yes
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
Echo Cancellation: 128 taps unless TDM bridged, currently OFF
Master Channel: 8
Actual Confinfo: Num/8, Mode/0x0009
Actual Confmute: No
Hookstate (FXS only): Onhook

Zapata.conf -

[channels]
context=default
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
relaxdtmf=yes
rxgain=2.0
txgain=2.0
group=1
callgroup=1
pickupgroup=1
immediate=no
context=from-internal-fax
group=1
signalling = fxo_ks
channel => 5
context=from-zaptel-fax
group=3
signalling = fxs_ks
channel => 8

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