Does anybody have T.38 faxing working with Flowroute? I am running Asterisk 1.6.2.7-rc3 with spandsp 0.0.6-pre17. I can successfully receive faxes over ulaw. I enabled T.38 with t38pt_udptl=yes in sip.conf. When I receive a fax it tries to negotiate T.38 and Flowroute sends back a Bad Request response saying I have a SIP syntax error.
Flowroute support is recommending that I try again after removing externip and localnet from sip.conf. They state that their service will recognize the private IP and rewrite the SIP packets. However this is going to cause issues for my remote SIP phones. Thanks, Ryan DEBUG[32389] app_fax.c: Negotiating T.38 for receive on SIP/flowroute-00000000 INVITE sip:+num...@xx.xx.xx.xx:5060 SIP/2.0 ... CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.2.7-rc3 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer X-asterisk-Info: SIP re-invite (External RTP bridge) Content-Type: application/sdp Content-Length: 293 v=0 o=root 2048302926 2048302927 IN IP4 xx.xx.xx.xx s=Asterisk PBX 1.6.2.7-rc3 c=IN IP4 xx.xx.xx.xx t=0 0 m=image 4575 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxFillBitRemoval a=T38FaxRateManagement:transferredTCF a=T38FaxMaxDatagram:1400 a=T38FaxUdpEC:t38UDPFEC SIP/2.0 400 Bad Request ... CSeq: 102 INVITE Error-Info: <sip:+num...@xx.xx.xx.xx>;cause="[line 023] SIP syntax error" Content-Length: 0 WARNING[32389] app_fax.c: Transmission error -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
