The customer got Siedle Intercom and connected to the CUCM 7.1 via Cisco VG204 (MGCP). The following is the (call)flow:
Custeromer > Siedle Intercom > VG204 > CUCM > Reception Telephone
The Reception press the # and the door is open. But the line remains open after the door has been opened and the Intercom has hanged up the line. Under Voice-ports I tried to play with "timeouts call-disconnect" and "timeouts wait-release" but it didn't work.
Any suggestion will be highly appreciated.