04-23-2008 11:45 AM - edited 03-15-2019 10:15 AM
Hi All
Got an inbound sip trunk from Asterisk (yeuck) to uc520 (no config needed on uc520 - inbound sip only). Both devices are on same local subnet.
Calls from * to uc520 work fine until an ext. on uc520 is busy or not answered.
When call goes to Unity - caller (at * end) can hear voicemail message and DTMF tone work but no audio is recorded.
I'm guessing it's an access list problem when * talking to unity - but not sure where to look.
Any ideas?
04-24-2008 05:30 PM
Just thought I`d update:
Problem was traced to access-list preventing traffic from reaching CUE.
Removed access list from CUE interface and viola. Then amended rules and put it back on!
09-24-2008 07:39 AM
Hi,
I have the exact same problem except your solution didn't work in my case:(( So just wanted to ask if there are any updates regarding the subject...
thanks,
goran pilat
09-24-2008 08:46 AM
One way audio issues are most of the times routing problems.
I recommend you to take a sniffer trace to check which ip addresses are used on the media exchange and then check if you can ping them.
09-25-2008 02:31 AM
Just a follow-up as I made it work. The external phones in my case were CCM5.1 registered IP phones connected to CME/CUE via SIP trunk. The problem was in this SIP trunk. I had to mark "require media termination point", and "DTMF signaling method" to OOB and RFC2833.
All the default access-lists were acceptable.
bye,
goran pilat
09-25-2008 01:28 PM
There's also an issue with 'ip verify unicast reverse-path' that would cause a similar issue with one-way voice traffic. If you're using ip verify unicase reverse-path you may want to remove it and see if this resolves your problem.
HTH,
Steve
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