ā01-20-2014 06:11 AM - edited ā03-16-2019 09:20 PM
Hi
We have problem with the outgoing calls from right fax to sip provider
Incoming calls working fine
Call flow:
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
A number:
25584000
B Number:
22448511
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
dtmf-relay rtp-nte
fax-relay ecm disable
no fax-relay sg3-to-g3
fax rate 9600
fax protocol pass-through g711alaw
no vad
!
dial-peer voice 1001 voip
description **Outgoing calls to ISP**
translation-profile outgoing SIP_Outgoing
destination-pattern 9T
session protocol sipv2
session target sip-server
voice-class codec 1
voice-class sip dtmf-relay force rtp-nte
dtmf-relay rtp-nte
fax-relay ecm disable
no fax-relay sg3-to-g3
fax rate 9600
fax protocol pass-through g711alaw
no vad
Could you pls help with that/?
Rergards
cc
Solved! Go to Solution.
ā01-20-2014 06:36 AM
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
a=rtpmap:0 pcmu/8000
m=audio 56008 RTP/AVP 8
c=IN IP4 10.10.10.43
a=rtpmap:8 pcma/8000
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"
Regards,
Mohit Singh
ā01-20-2014 06:36 AM
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
a=rtpmap:0 pcmu/8000
m=audio 56008 RTP/AVP 8
c=IN IP4 10.10.10.43
a=rtpmap:8 pcma/8000
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"
Regards,
Mohit Singh
ā01-20-2014 06:39 AM
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.
Sent:
--> 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
From: Intership<25584000>;tag=9080410-2b0a0a0a-13c4-55013-81e7e-2b9acc30-81e7e25584000>
To: <922448511>;tag=C1765624-2290922448511>
Date: Mon, 20 Jan 2014 13:47:00 GMT
Call-ID: 842af80-2b0a0a0a-13c4-55013-81e7e-421bd972-81e7e
Server: Cisco-SIPGateway/IOS-15.2.4.M4
--> CSeq: 2 PRACK
Content-Length: 0
ā01-20-2014 07:46 AM
Mohit
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
Regards
Chrysostomos
""The Most Successful People Are Those Who Are Good At Plan B""
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