I checked in Lab, with these servers Callmanager(Two nodes cluster) running on 12.5.1.15900-66CIPC running on 8.6.6.0 I am not using any Load-Balancer.   Here is the initial setup Cisco Callmanager and EM services are running on both the nodes.Config...

In order to upgrade from 9.3 to 9.12.3 you have to step upgrade to CE9.8.2 or CE9.9.1, and these firmware have been deferred so you won't find it on Cisco Portal. If you still want them you will have to open a TAC case for the same.   But here is wor...

Hey, here is a workaround to achieve this by using two route pattern,   Navigate to CUCM>>Call Routing>>SIP Route Pattern, add new pattern  Chose IPAddress Routing with following IPv4 Pattern 1.0.0.0/1 point it to Expressway trunk   (1st route patter...