Skip to main content

Posts Tagged ‘CUCM’

PRACK Causes No Ringback between CUCM and Lync

I recently had the pleasure of working with one of our customers to implement Lync Server 2010 Enterprise Voice with Cisco Unified Communications Manager (CUCM) 7.1.3. The integration between the two systems went pretty smoothly. During our testing phase though, we uncovered an issue with ringback. When a PSTN user or a Cisco IP Phone […]