Hello, We are configuring MS Teams calling with Direct Routing. We see that transfers to PSTN are not working.  In the INVITE message going to PSTN, we see a Referred-By header, but our provider says that they need a Diversion header to make the tran...

Hello, I'm setting up Expressway E & C for MRA. My traversal zone fails and I see the error 'SIP Failed: DNS resolution failed' When I use the DNS Lookup tool to resolve the fqdn of the expressway E, indeed it fails.  When I add a 2nd server, like 8...

Hello, I have installed a CUCM (v14) cluster and want to use UCCX (v12.5). When I create the Call control group, the CTI ports are created on the CUCM, but they are not registering.Also the route points are created when I add an application, but it d...

Hello,  I have installed a new CUCM v14 and want to import the configuration of an older cluster v11.5.  I have installed the ciscocm.DataExport_v1.0.cop.sgn file on the old cucm publisher. When I run the Utils system upgrade dataexport initiate comm...