When testing our media gateway configurations for OCS 2007 R2 for inbound and outbound calling to/from the PSTN,...
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
we get an "error 500" from the media gateway. What do we do and where do we look?
The next morning, we were all ready to test media gateway configurations. First we tried to a call from the PSTN to a DID assigned to a MOC user; this worked as planned. The next test was dialing a PSTN number from a MOC client that is OCS enterprise-voice enabled. We got a fast busy. Since our only location profile just passes the dialed number along to the mediation server, and the PBX is expecting a 9 followed by a 1 then the area code and 7-digit phone number, we are confident that the problem is not with normalization rules. We ran the same test with the OCS logging tool on the mediation server and got an "error 500" from the media gateway. The error message indicates that there is some problem with the media gateway.
Review the media gateway configuration and make sure nothing has changed. Specifically, make sure that QSIG is still selected on the media gateway and not a protocol such as NI2. Why? Because if NI2 is selected on the gateway, it will allow inbound to OCS from the PSTN, but not outbound from OCS to the PSTN!
Dig Deeper on Unified Communications Integration and Interoperability
Related Q&A from Hugh Marlor
Many users want to know if Lync 2010 can coexist with previous Microsoft UC clients Live Communications Server and Office Communications Server. ...continue reading
Integration and collaboration expert Hugh Marlor explains how to avoid the Windows 2008 issue of encountering a "presence unknown" display when ...continue reading
Unified communications integration and collaboration thought leader Hugh Marlor details the circumstances under which you need to use Subject ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.