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You have a problem with FXO detecting a supervisory disconnectFind out what signalling and method of disconnect your PBX is using and configure the FXO on the router accordingly.The following links might help:http://cisco.com/en/US/tech/tk652/tk653/t...
how about doing #show run, copying it to notepad, delete everything that you don't want to remove in notepad and for the rest just negate the commands (put "no " in front of them), then just paste the result to switchanother option would be #copy run...