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One way audio for avaya after changing to checkpoint firewall

Posted on 2016-07-21
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Last Modified: 2016-07-31
Hi all,

I have an issue after changing our firewall from juniper to checkpoint firewall.

When I make a call to an internal extension , the recipient can hear my voice clearly but I can't hear their voices.

I have checked with avaya, they says we need to set no inspect for h323 and h225

But we can't find anything like that in checkpoint. Any advice will be much appreciated.

Thank you
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Question by:tp_edb
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LVL 12

Expert Comment

by:Bryant Schaper
ID: 41723004
Could be a routing issue, typically results in one way problems. Can you compare to the old device
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LVL 3

Expert Comment

by:Kaiser Anwar
ID: 41723063
I have seen this before and it turned out to be a routing issue - check your routing to make sure subnet is accessible
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LVL 12

Expert Comment

by:Bryant Schaper
ID: 41723120
that is what I have seen as well, not just the subnet but make sure you can connect to the sip endpoint IP from the provider.  I dealt with this just the other day at a site after cutting over to a new vpn connection
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Author Comment

by:tp_edb
ID: 41724063
Thanks for the advice, still no luck. All route is OK.
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Author Comment

by:tp_edb
ID: 41728724
We are escalating issue to checkpoint .. have chk and try all possible setting
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Accepted Solution

by:
tp_edb earned 0 total points
ID: 41730639
We managed to solve the issue.. it is due to static routing issue between the phone vlan and phone gateway system..
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Author Closing Comment

by:tp_edb
ID: 41736366
We have tested it with various location and it resolve the one way audio issue
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