On 11/11/11 12:52, Alex Crow wrote:
If anyone's interested, I've get outbound fax semi-working with this setup:
<extension name="faxoutviamitel" continue="true"> <condition field="destination_number" expression="^9(\d{4})$"> <action application="set" data="absolute_codec_string=PCMA"/> <action application="set" data="fax_enable_t38=true"/> <action application="set" data="sip_execute_on_image=t38_gateway self nocng"/> <action application="bridge" data="sofia/external/$1@10.10.0.2"/> </condition> </extension>
t38modem is started like this:
t38modem -ttt -o /var/log/t38modem.log --no-h323 -u t38modem --sip-register t38modem@192.168.20.245,secret --sip-listen udp\$*:6060 --ptty +/dev/ttyT38-1 --route "modem:.*=sip:<dn>@192.168.20.245;OPAL-Force-Fax-Mode=true" --route "sip:.*=modem:<dn>"
The remaining problem is that on the receiving end we only have the top centimetre or two of the image. I think this may be a tiff library issue but I'm not sure.
Cheers
Alex
In the end I had to disable ECM in the Hylafax modem definition for t38modem, this was what was causing the image truncation. Odd, because both t38modem and spandsp ostensibly support ECM. I'm wondering if I was sending audio out directly over TDM rather than via a SIP gateway using G.711 then ECM would be OK... probably a timing issue. Cheers Alex -- This message is intended only for the addressee and may contain confidential information. Unless you are that person, you may not disclose its contents or use it in any way and are requested to delete the message along with any attachments and notify us immediately. "Transact" is operated by Integrated Financial Arrangements plc Domain House, 5-7 Singer Street, London EC2A 4BQ Tel: (020) 7608 4900 Fax: (020) 7608 5300 (Registered office: as above; Registered in England and Wales under number: 3727592) Authorised and regulated by the Financial Services Authority (entered on the FSA Register; number: 190856)