05-29-2008 07:06 AM - edited 03-15-2019 10:57 AM
having trouble with FXO configuration of Cisco Router. The internal phone does not stop ringing after the remote end (from PSTN) hang up because of incorrect disconnect tone parameters. I cant get these parameters from the service provider. How I can discover them using sigview or CoolEditPro, or another software ??? Thanks in advance
05-29-2008 08:25 AM
Hi
I did it by recording the tone. when the phone is ringing after the PSTN hang up, if you answer you can hear the disconnet tone.
I built a cable and I made a call, then hung up and answered the phone with the cable connected to the computer and the telephone.
The cooleditpro running and recording when I made the call. The rest was to analyse the record I got.
Do not try to record the disconnect tone with the computer directly connected to the phone line, it can damage the audio port of the computer.
regards
Nicolay
05-29-2008 08:43 AM
how do u make the cable to be for the IP phone to record the busy tone or you just used analog phone. myabe i will put the PC microphone on the handset of the phone. assuming i got the recording and frequincies of the busy tone, how do i program my MGCP gateway FXO to disconnect?
05-29-2008 05:18 PM
yeah! I wonder how to record the tone into PC/Laptop. Which port/cable should I use on the PC/Laptop? I only have traditional analog phone!
05-29-2008 05:24 PM
No cable is really needed. Use like a PC headset to record from the handset in a quiet environment.
05-30-2008 11:21 AM
ok assume that i got the frequency of the busy tone, how do i configure Cisco call manager or the gateway to enable busy tone detection??
05-30-2008 11:29 AM
05-30-2008 01:09 PM
Hi
When try to record without a cable it didn't work well because I got too much noice. So I built a cable with a RJ14 jack at one site (the connector of the handset of the telephone)and at the other site a plug to the line-in of the sound card. The pin I used in the RJ14 are 2 and 3.
then I configure the custom cp tone
voice class custom-cptone DISCONNECT
dualtone disconnect
frequency 431
cadence 500 500
and the voice port
voice-port 0/0/0
supervisory custom-cptone DISCONNECT
I attach the reccord, so you can compare it the configuration.
Nicolay
05-31-2008 06:59 AM
05-31-2008 12:13 PM
You really don't need to make any cables, all you need is an IP Phone (Or Soft phone) with 'Allow PC Voice Vlan Access' (or whatever) option set in CM >> Device >> IP Phone.
Then just connect the PC at the back of your IP phone (as you usually do), capture using Ethereal, convert Raw Audio Payload Into Wav, analyze it with SigView, make appropriate setting in router, and you are good to go.
Have a look at:
Voice gateway setting:
voice class custom-cptone ST
dualtone disconnect
frequency 425
cadence 500 500
voice-port x/x/x
supervisory disconnect dualtone mid-call
supervisory custom-cptone ST
echo-cancel coverage 24
cptone BR
timeouts call-disconnect 1
timeouts wait-release 1
timing hookflash-out 500
connection plar opx NNN
Please note some commands are just extra (and do not pertain to the current question)
Check out the attachments along with my post for sample analysis that was used to solve this issue with a customer and get the sign-off :).
Regards
Farrukh
05-31-2008 06:59 PM
Thanks. I cleared somethings. According to my disconnect tone, I configured in the router 2811:
voice class custom-cptone vn
dualtone disconnect
frequency 450
cadence 200 200
voice-port 0/1/0
supervisory disconnect dualtone mid-call
supervisory custom-cptone vn
But still not solved the problem :(
Any idea, plzz!!
05-31-2008 09:58 PM
Please try to add the following to your voice-port:
cptone BR (replace with your country)
timeouts call-disconnect 1
timeouts wait-release 1
timing hookflash-out 500
Its advisable to have the cptone
Also just for testing try to add 'connection plar opx
Regards
Farrukh
05-31-2008 11:15 PM
Thanks for your help, Farrukh! It works nice! Default cptone is US, and I added the last three commands:
timeouts call-disconnect 1
timeouts wait-release 1
timing hookflash-out 500
Thank you very much!!!
06-01-2008 01:41 AM
Thats really great :), I was also very happy when I got this working
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