My topology: internal ExchangeUM, ISA, OCS. single edge server and external OC
I have published
TCP for port443
UDP for port 3478 in ISA and configure AP, DP and MR in edge server.
Now when I call from external OC to exchangeUM, it doesn't go through UDP but TCP. I have configued UDP protocol and access rules in ISA and also configure media relay in Edge server. Is there anything I can check? Thanks!