[cisco-voip] FXO disconnect problem with Panasonic 616

[Juraj Kovac]

Hello,

I have Cisco1760 with voice FXO card connected to Panasonic 616. I have 
problem when call is ended on the other side FXO port remains in off-hook 
state ad infinity until it is shuting down manually. I tried any combinations 
of supervisory disconnect settings (signal, anytone, dualtone pre-connect, 
dualtone mid-call) and I also tried every cptone locale settings.
I see that the router canot recognize BUSY tone from PBX when other side 
closes connection. Where the problem is? Does it have relationship to the 
cptone locale settings? Have I define cptone-custom settings? In this case I 
need freq-pair and cadence settings for all types of progress tones of this 
type of PBX.
My IOS version is 12.2.15T5. I have the following settings on FXO port:

voice-port 2/0
 playout-delay nominal 1500
 playout-delay mode fixed
 no comfort-noise
 timeouts initial 30
 timeouts interdigit 6
 timeouts wait-release 10
 description ### Extension 17 ###
 supervisory disconnect dualtone mid-call
 no battery-reversal

---> cptone US default


I am including tracing of the problem:

When all is idle:
prompt>sh voice call sum
PORT           CODEC    VAD VTSP STATE            VPM STATE
============== ======== === ==================== ======================
2/0             -         -  -                     FXOLS_ONHOOK
2/1             -         -  -                     FXOLS_ONHOOK

I am calling extension 17:

prompt>sh voice call sum
PORT           CODEC    VAD VTSP STATE            VPM STATE
============== ======== === ==================== ======================
2/0             -         -  -                     FXOLS_WAIT_RING_MIN
2/1             -         -  -                     FXOLS_ONHOOK

after 1st ring router responds with dial tone:

prompt>sh voice call sum
PORT           CODEC    VAD VTSP STATE            VPM STATE
============== ======== === ==================== ======================
2/0             None      y  S_DIGIT_COLLECT       FXOLS_PROCEEDING
2/1             -         -  -                     FXOLS_ONHOOK

I hang up the phone. Router waits 30 s for digit collection (timeouts 
initial). After this timeout router enters WAIT_RELEASE state:

prompt>sh voice call sum
PORT           CODEC    VAD VTSP STATE            VPM STATE
============== ======== === ==================== ======================
2/0             None      y  S_WAIT_RELEASE_NC     FXOLS_PROCEEDING
2/1             -         -  -                     FXOLS_ONHOOK

In this state router remains ad infinity.



Thanks,