I would like to play a custom message when users are dialing from CUCM to an IP trunk and the IP end-point is not available.
My setup is CUCM 7 to a gatekeeper controlled trunk to several CMEs.
When CMEs are disconnected from the network (VPN down), CUCM users get a busy tone for that destination. I would like to replace the busy by a message saying something like "this destination is currently not available for internal dialing, please use the public network...".
I can make use of CUCM, Unity and gateways for the solution.
Thanks for your help,