FXO disconnect and CPTONE

Unanswered Question
Mar 2nd, 2008
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IOS router is successfull to understand disconnect signal

but it takes 5-7 seconds from disconnect of other side

I attach *.vav file of disconnect signal

here is my config;

voice class dualtone-detect-params 1

freq-max-deviation 20

cadence-variation 20

!

voice class custom-cptone TT

dualtone disconnect

frequency 450

cadence 220 200 220 200 220 200 620 200

!

voice-port 2/0/11

supervisory disconnect dualtone mid-call

supervisory custom-cptone TT

supervisory dualtone-detect-params 1

timeouts call-disconnect 3

timeouts wait-release 3

timing hookflash-out 500

connection plar opx 0

description 4283163

station-id name 4283163

caller-id enable




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pcameron Mon, 03/03/2008 - 04:45
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  • Cisco Employee,

This actually sounds OK - the duration of the disconnect tone is around 1.9 seconds per cycle, and since you have set the timeouts call-disconnect and wait-release on the voice port to 3 seconds, this equates to 5 seconds.


Changing these timers any lower than this often causes unreliable call disconnecting and given that the DSP needs at least one tone cycle to pick up the disconnect tones, so you might have to accept this 5 second disconnect delay.



a.gooding Mon, 03/03/2008 - 07:05
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i also put in this command under the voice-port, maybe it may help


timing sup-disconnect (i put 100ms)

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