I am trying to hairpin calls using 1 PRI in cisco gateway,
1. call comes in to gateway using PRI port 0/1 with the called number 456xxx.
2. I am matching the call using incoming pots dial-peer and then translating the 456xxx number to 654xxx number and then match an outgoing pots dial-peer and send the call out of the same PRI.
Is this call flow possible? gateway is running H323.
Solved! Go to Solution.
Very much possible .
You can use num-exp rather than translation-profile for minimal configuration (if it doesn't affect any other config).
But I have a confusion, this is not a IP to IP call (like the concept we have for CUBE), here both of the ingress and outgress calls are over PRI i.e. over TDM channel, do we really need this 'allow-connection' command for this case?
Thanks for all your reply, I am getting an assertion failure message when i try to hairpin calls.
I can see calls coming in to the gateway by matching incoming dial-peer and then the called number gets translated and matches the outbound dial-peer but the calls are not going out of PRI. I am getting an assertion failure message after matching the outbound pots dial-peer..
It's my honor to having both of you here, +5 for you too sir for both of your continuous contributions.
@running-config, 'sh isdn status' and 'debug isdn q931' while failing the call.
I was able to simulate the hairpinning with different gateway running same IOS and with same configuration.
It seems i was hitting a bug with that gateway.
Thanks for all your help..
Please find the config which i used...
voice translation-rule 1
rule 1 /4734490/ /94544653/
voice translation-profile test
translate called 1
controller E1 0/1/0
pri-group timeslots 1-31
description >>> PRI E10 <<<<
no ip address
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable
dial-peer voice 100 pots
translation-profile incoming test
incoming called-number 4734490
dial-peer voice 200 pots
I have also attached the Q931 debug for a successful call.
So you got your answer, it's the IOS.
Try to get next/previous release of your IOS, please read the known issues first before downloading it from CCO.