When a call comes into Auto Attendant and caller makes selection there is a moment of silence and the call disconnects. This is on a SIP trunk from Vitelity. Any option the caller chooses (transfer by name, transfer by number, etc) the call drops. If I dial internally, everything works fine. It is only on external calls over the SIP trunk.
Configure Multicast Paging on the Cisco IP Phone 7800 Series or 8800 Series Multiplatform Phone
The Cisco IP Phone 7800 and 8800 Series Multiplatform Phones provide voice communication over an Internet Protocol (IP) network...
Add Call Park on a Cisco 7800 or 8800 Series Multiplatform Phone Key Expansion Module
Call park allows the user of the phone to put an incoming call on hold so that the call can be retrieved on another phone. A call is park...