Are there any ideas... when an IP phone calls another IP phone through an IP trunk, one end cannot hear the other. The other IP phone would be able to hear just fine.
Scenario 1 : IP Trunk is created between two Avaya S8xx servers
Solution: Near site's IP phone's IP address must be pingable from the Far site's CLAN & MEDPRO cards (those which have been used to create the trunk). If the above doesn't happen, then necessary network changes must be made to ensure reachability from one side's CLAN/MEDPRO to the far side IP phones.
Scenario 2 : IP Trunk is created between an Avaya S8xx server and IP Office
Solution: Proper IP route must be created in IP Office to accept the packets coming from the IP phones. An entry for their network address must be made in the IP Office
Posted on Apr 02, 2009
Is this an IP office? If so, maybe try to untick the "direct media path" box in the extension tab.
Posted on Jul 08, 2008
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Posted on Jan 02, 2017
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