BRI disconnect TOne

Answered Question
Jun 9th, 2008

Hi all,

REcently i have tried to configure Supervisory disconnect under a BRI card (using the Voice-port creted virtuall) but the command is no longer listed like in the FXO configuration.

SO if i don't have my CPTONE country listed and there is no supervisory configuration were i can't aplly custom cptone so how can i disconnect call when the Calling party hang up the phone!!

Thanks for helping me out

I have this problem too.
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Correct Answer by Paolo Bevilacqua about 8 years 5 months ago

With ISDN, you don't.

Thanks for the appreciation and good luck!

Correct Answer by Paolo Bevilacqua about 8 years 5 months ago

Just to verify, can you send the debug isdn q931 trace ?

However when the person on the IP phone hears a disconnect tone, he/she should hang up and that's it.

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Paolo Bevilacqua Mon, 06/09/2008 - 03:31

Hi,

ISDN doesn't need tones for disconnect. A Q.931 message specifies when the remote has disconnected. Consequently no supervisory disconnect configuration is necessary.

Note: In some countries, for an incoming call, it is not possible to actually terminate the call until the caller has disconnected.

Seifeddine-Tlili Mon, 06/09/2008 - 04:16

Hi Bevilacqua how is going my friend :)

Indeed when i use the debug isdn Q931 i saw the disconnect message but the phone still use the Busy tone and it only disconnect after 30 sec

So any ideas how i can discreate this timeouts

Thanks

Seifeddine-Tlili Mon, 06/09/2008 - 04:28

I meant that we i receive a call from the (PSTN using the BRI) and someone answer the phone and when the calling (the one who call from the PSTN) hang up i still listen in my IP Phone to the disconnect tone then the Busy after that it disconnect bu it takes so much time (about 30 secs)

Correct Answer
Paolo Bevilacqua Mon, 06/09/2008 - 04:50

Just to verify, can you send the debug isdn q931 trace ?

However when the person on the IP phone hears a disconnect tone, he/she should hang up and that's it.

Seifeddine-Tlili Mon, 06/09/2008 - 05:10

thanks for help :) u just confirm to me that i don't even need any kind of supervisory disconnect

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