H323 via Gatekeeper fails with Temporary Network Failure
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02-13-2013 02:37 AM - edited 03-16-2019 03:41 PM
Hi All - The dreaded Temporary Network Failure error
I am trying to troubleshoot a fairly complex call routing issue, and am struggling to find the right debug to use.......
Call routing is:
PBXa --> E1 --> MGCPRtrA --> Gatekeeper --> H323RtrB --> E1 --> PBXb
If I can believe the users, they are saying that the problem is intermittent (although I have never managed to get a call through).
If have used debug ISDN Q831 and debug voice CCAPI inout. A ping from router A, shows 16 hops to the destination, and I am told that there is also a firewall between, so there are multiple points that this could be failling.
What I am trying to find, is a way to debug that will point me in the direction of the root cause - whether it be CODEC, or network, bandwidth or gatekeeper.
Any ideas?
Thanks in advance
Brian
Debug attached from Router B:
Calling number=8753
Called number=8600456921, then translated to 6921
(I have also been down the debug ras and debug h225 asn1 route)
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02-20-2013 06:23 AM
Hi,
The debugs you've provided do not have h225 asn1 or h225 ras messages. However it does look like an issue with the codec. Some things that I noticed
1. You do not have a dial-peer on RtrB for inbound calls, it is matching dial-peer 0. I would not prefer that, create a separate dial-peer for matching voip calls, something similar to this
dial-peer voice 100 voip
description ++ Inbound VoIP Calls ++
incoming called-number .
voice-class codec 1
dtmf-relay rtp-nte h245-signal h245-alphanumeric
2. Check the dial-peer on RtrA and find out the codec being used, it should be g729r8. I do see g729br8 in the debugs and since we have dial-peer 0 matching, it may fail. So make sure on the codec on RtrA
Let us know if this helps.
Regards,
Aashish
