Sending Fax Issue

Asterisk Asterisk Support
1

Hi,

I am using the Digium Fax for send/recevie fax. When I am making the call on fax number from asterisk. I am getting the follwoing errors. Here I am posting the log :

Here I am getting the error is :

WARNING[7663]: res_fax.c:1709 sendfax_t38_init: Audio FAX not allowed on channel ‘SIP/gateway_voip-b61f0860’ and T.38 negotiation failed; aborting.
[Apr 27 12:11:23] ERROR[7663]: res_fax.c:1904 sendfax_exec: error initializing channel ‘SIP/gateway_voip-b61f0860’ in

Called gateway_voip/0112020023
– SIP/gateway_voip-b61f0860 is making progress passing it to SIP/1000-b61db0b8
– SIP/gateway_voip-b61f0860 answered SIP/1000-b61db0b8
– Executing [faxthis@local:3] Verbose(“SIP/gateway_voip-b61f0860”, “1,Set options and transmit fax”) in new stack
Set options and transmit fax
– Executing [faxthis@local:4] Set(“SIP/gateway_voip-b61f0860”, “faxlocation=/fax”) in new stack
– Executing [faxthis@local:5] Set(“SIP/gateway_voip-b61f0860”, “faxfile=faxfile.tif”) in new stack
– Executing [faxthis@local:6] Set(“SIP/gateway_voip-b61f0860”, “FAXOPT(headerinfo)=Fax from Trias”) in new stack
– Executing [faxthis@local:7] Set(“SIP/gateway_voip-b61f0860”, “FAXOPT(localstationid)=67890”) in new stack
– Executing [faxthis@local:8] Set(“SIP/gateway_voip-b61f0860”, “FAXOPT(maxrate)=14400”) in new stack
– Executing [faxthis@local:9] Set(“SIP/gateway_voip-b61f0860”, “FAXOPT(minrate)=2400”) in new stack
– Executing [faxthis@local:10] NoOp(“SIP/gateway_voip-b61f0860”, “…Sending fax now…faxfile.tif”) in new stack
– Executing [faxthis@local:11] SendFAX(“SIP/gateway_voip-b61f0860”, “/fax/faxfile.tif,d”) in new stack
– Channel ‘SIP/gateway_voip-b61f0860’ sending FAX:
– /fax/faxfile.tif
– Executing [faxthis@local:2] NoOp(“SIP/1000-b61db0b8”, “Dial the fax number”) in new stack
– Executing [faxthis@local:3] Verbose(“SIP/1000-b61db0b8”, “1,Set options and transmit fax”) in new stack
Set options and transmit fax
– Executing [faxthis@local:4] Set(“SIP/1000-b61db0b8”, “faxlocation=/fax”) in new stack
– Executing [faxthis@local:5] Set(“SIP/1000-b61db0b8”, “faxfile=faxfile.tif”) in new stack
– Executing [faxthis@local:6] Set(“SIP/1000-b61db0b8”, “FAXOPT(headerinfo)=Fax from Trias”) in new stack
– Executing [faxthis@local:7] Set(“SIP/1000-b61db0b8”, “FAXOPT(localstationid)=1234567890”) in new stack
– Executing [faxthis@local:8] Set(“SIP/1000-b61db0b8”, “FAXOPT(maxrate)=14400”) in new stack
– Executing [faxthis@local:9] Set(“SIP/1000-b61db0b8”, “FAXOPT(minrate)=2400”) in new stack
– Executing [faxthis@local:10] NoOp(“SIP/1000-b61db0b8”, “…Sending fax now…faxfile.tif”) in new stack
– Executing [faxthis@local:11] SendFAX(“SIP/1000-b61db0b8”, “/fax/faxfile.tif,d”) in new stack
– Channel ‘SIP/1000-b61db0b8’ sending FAX:
– /fax/faxfile.tif
[color=#FF0000][Apr 27 12:11:23] WARNING[7663]: res_fax.c:1709 sendfax_t38_init: Audio FAX not allowed on channel ‘SIP/gateway_voip-b61f0860’ and T.38 negotiation failed; aborting.
[Apr 27 12:11:23] ERROR[7663]: res_fax.c:1904 sendfax_exec: error initializing channel ‘SIP/gateway_voip-b61f0860’ in T.38 mode[/color]
== Spawn extension (local, faxthis, 11) exited non-zero on ‘SIP/gateway_voip-b61f0860’
– Executing [h@local:1] NoOp(“SIP/gateway_voip-b61f0860”, “FaxStatus : FAILED”) in new stack
– Executing [h@local:2] NoOp(“SIP/gateway_voip-b61f0860”, “FaxStatusString : error negotiating T.38”) in new stack
– Executing [h@local:3] NoOp(“SIP/gateway_voip-b61f0860”, “FaxError : T38_NEG_ERROR”) in new stack
– Executing [h@local:4] NoOp(“SIP/gateway_voip-b61f0860”, "RemoteStationID : ") in new stack
– Executing [h@local:5] NoOp(“SIP/gateway_voip-b61f0860”, “FaxPages : 0”) in new stack
– Executing [h@local:6] NoOp(“SIP/gateway_voip-b61f0860”, "FaxBitRate : ") in new stack
– Executing [h@local:7] NoOp(“SIP/gateway_voip-b61f0860”, "FaxResolution : ") in new stack
[Apr 27 12:11:23] WARNING[7659]: res_fax.c:1709 sendfax_t38_init: Audio FAX not allowed on channel ‘SIP/1000-b61db0b8’ and T.38 negotiation failed; aborting.
[Apr 27 12:11:23] ERROR[7659]: res_fax.c:1904 sendfax_exec: error initializing channel ‘SIP/1000-b61db0b8’ in T.38 mode
== Spawn extension (local, faxthis, 11) exited non-zero on ‘SIP/1000-b61db0b8’
– Executing [h@local:1] NoOp(“SIP/1000-b61db0b8”, “FaxStatus : FAILED”) in new stack
– Executing [h@local:2] NoOp(“SIP/1000-b61db0b8”, “FaxStatusString : error negotiating T.38”) in new stack
– Executing [h@local:3] NoOp(“SIP/1000-b61db0b8”, “FaxError : T38_NEG_ERROR”) in new stack
– Executing [h@local:4] NoOp(“SIP/1000-b61db0b8”, "RemoteStationID : ") in new stack
– Executing [h@local:5] NoOp(“SIP/1000-b61db0b8”, “FaxPages : 0”) in new stack
– Executing [h@local:6] NoOp(“SIP/1000-b61db0b8”, "FaxBitRate : ") in new stack
– Executing [h@local:7] NoOp(“SIP/1000-b61db0b8”, "FaxResolution : ") in new stack
– Got SIP response 603 “Declined” back from 78.46.43.9

Can any one help me out to identify this issue.

Thanks in advance.

Ketan

2

Your SP provider doesn’t allow you to send fax. Find a better SP provider or get an FXO card.

Providing the actual SDP negotiation would help confirm this diagnosis.

I don’t know if the Digium fax module will allow direct modem audio over SIP, but if it does, and there is no T.38 service from the provider, you will need G.711 (mu or A law, depending on you country) as an allowed codec, both in Asterisk and in the service provider - all the way through to the PSTN.

3

Thanks for your information. I believe my voip service provide doesn’t allow the fax.