I am trying to configure the feature access code for FXS port in the same CME. I try to follow "Configuring FXS Ports for Basic Calls" http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fxsbasic.html, I met a problem. In order to enable service stcapp in the dial-peer, I need to remove the destination-pattern command. After I remove the destination-pattern and enable the service stcapp, CME does not allow me to add back destination-pattern. Thus if I can't enable the destination-pattern, how I could tell the CME to route the call to that FXS port? I also try the answer-address, changing the incoming called-number pattern and adding back the station-id in voice port, but I am getting busy tone.
I would like to check does anyone have any idea on how to successfully enable the feature access code on the FXS port on the same CME?