I am gettign the following errors on my Lync Server 2010 for ALL outbound calls. All inbound calls are working. I am not sure how to fix it. My SBC's are up and running just fine. I tried to install CU4 but it is already installed. Not sure how to get them back online or at least the communication between them and my Mediation server. This is an On-Premise environment
A PBX gateway has been marked as down.
Gateway name: SBC01.domain.com.
Cause: A gateway failed to respond to a request within allotted time or was unable to route the request due to some error.
Verify that the gateway is up and can respond to calls.
A call to a PSTN number failed due to non availability of gateways.
Called Number: DIaled Number Here
Phone Usage: Local, Long Distance and International
Cause: All gateways available for this call are marked as down.
Verify that these gateways are up and can respond to calls.
All Gateways are marked as Down Or Unavailable.
Cause: All Gateways are unresponsive and consequently unable to route calls to Gateways.
Verify that Gateways are functioning and resolve any networking issues.