We have problem with the outgoing calls from right fax to sip provider
Incoming calls working fine
ISP (sip trunk with VG)-----Voice Gateway----Right Fax via SIP
when we try to make outbound calls from right fax to outside fax machine the call disconnected with disconnect code
SIP/2.0 481 Call Leg/Transaction Does Not Exist
Attached is the debug
The outbound call hit the correct outbound dial peer for the sip calls to ISP
dial-peer voice 1000 voip
description **Incoming calls From ISP**
translation-profile incoming RIGHTFAX_INCOMING
modem passthrough nse codec g711alaw
session protocol sipv2
session target sip-server
incoming called-number .
voice-class codec 1
voice-class sip dtmf-relay force rtp-nte
no voice-class sip outbound-proxy
fax-relay ecm disable
no fax-relay sg3-to-g3
fax rate 9600
fax protocol pass-through g711alaw
dial-peer voice 1001 voip
description **Outgoing calls to ISP**
translation-profile outgoing SIP_Outgoing
Could you pls help with that/?
Go to Solution.
Your Right Fax is sending double "m" line in SIP invite. "0" for g711ulaw and "8" for g711alaw.
m=audio 56008 RTP/AVP 0
c=IN IP4 10.10.10.43
m=audio 56008 RTP/AVP 8
With multiple "m" lines in SDP message there will be issue. Enable only one codec in Right fax (either ulaw or a law) and then test again.
If after enabling only one codec you face the same issue the please share the same set of logs + "debug ccsip error". Also share "show run" and "show version"
Also try disabling PRACK (or Rel 1XX) in Right fax as the reponse "SIP/2.0 481 Call Leg/Transaction Does Not Exist" is sent for PRACK request.
--> SIP/2.0 481 Call Leg/Transaction Does Not Exist
Via: SIP/2.0/UDP 10.10.10.43:5060;branch=z9hG4bK-81e7f-1fb7220b-64261708
Date: Mon, 20 Jan 2014 13:47:00 GMT
--> CSeq: 2 PRACK
5 stars to you
The reason for the failure whas the double m line in sip invite
with only the pcma configured into RTP parametres in RIght fax then the issue solved
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