I know this is an old question , that IP-Phone keeps ringing after PSTN call disconnect .
I have followed this post https://supportforums.cisco.com/discussion/10589296/capture-pstn-parameters-fxo-disconnet
PSTN --> 2811(with B-ACD TCL) --> CUCM8.6 --> IP-Phone
the problem that after PSTN disconnect the call , IP-Phone keeps ringing also but only for 3 times . i need to cut it off and just stop ringing after the call disconnect !!
!
voice class custom-cptone Disconnect
dualtone disconnect
frequency 450 460
cadence 255 255 255 255
voice-port 0/0/0
supervisory disconnect dualtone mid-call
supervisory custom-cptone Disconnect
no battery-reversal
cptone EG
timeouts call-disconnect 1
timeouts wait-release 3
timing hookflash-out 50
caller-id enable
!
