10-13-2009 04:11 AM - edited 03-15-2019 08:02 PM
I have problem with FXO ports located in CME 7. the call remains active till the disconnect signal comes from the CME or CUE
I tried the following:
I am calling from PSTN to IP Phones: if the user answers the call and then I terminate the call. Call will disconnect. if the user does not take the call then the call will be forwarded to the CUE voice mail. once it is forwarded I terminated the call from PSTN. but the call in this case still active and a silent message will be stored in the voice mail.
I think it is not normal FXO disconnect problem because it does not happen between the CME and PSTN. it is between CUE and PSTN. so any help??
Solved! Go to Solution.
10-17-2009 12:14 PM
In the sound software, you look at the time interval for tone and silence.
10-13-2009 04:17 AM
It is indeed a disconnect problem of the most classic type.
Remember, either use ISDN where the problem never happens, or must configure accurately disconnect supervision, and live with an inferior system.
10-13-2009 06:29 AM
Thank you for your reply. but I tried all disconnect supervision types but no luck
10-13-2009 06:32 AM
You need to configure the tones explicitly for your country.
And, some IOS versions have bugs that prevent it from working.
10-13-2009 07:20 AM
I am using 2851 IOS version:12.4(24)T
I searched bug toolkit and I found the following bug:
CSCsx42760 Bug Details:
Need attention tone detector for supervisory disconnect
Symptom:
Inability to disconnect on the US 'offhook alert' or 'attention tone'. This tone is used to alert a user that the phone is offhook, after the phone has been offhook for an extended period of time after the other party has hung up.
Conditions:
The tone is made up of 1400 Hz, 2060 Hz, 2450 Hz, and 2600 Hz. This tone is sometimes found as a disconnect tone in areas that do not have any other supervisory disconnect method, and is the only form of disconnect notification.
This bug is to introduce CLI to offer an ability to disconnect on this tone.
Workaround:
None.
but I am not in US
Inability to disconnect on the US 'offhook alert'
Do you think this is the problem???
10-13-2009 07:28 AM
No, the problem is that you need to configure the tones for your specific country and pstn.
10-13-2009 07:39 AM
I already have configured them
this is the configuration:
voice-port 0/3/0
supervisory disconnect dualtone mid-call
supervisory custom-cptone STC
no battery-reversal
input gain 14
output attenuation -6
cptone SA
timeouts call-disconnect 5
timeouts ringing 5
timeouts wait-release 5
timing hookflash-out 50
connection plar 5003
caller-id enable
10-13-2009 07:47 AM
I do not see the custom-cptone configuration.
10-13-2009 07:51 AM
could you please give me the commands for this?
10-13-2009 08:03 AM
voice class custom-cptone
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ft_ansds.html#wp168445
10-17-2009 03:36 AM
I already have added the voice class but still the same problem.
any suggestion??
10-17-2009 03:53 AM
Wrong tones, or buggy IOS.
10-17-2009 04:26 AM
Thank you too much for your response:
how I can know the configuration for:
voice class custom-cptone XXXX
dualtone disconnect
frequency
cadence
I used this site:
http://www.3amsystems.com/wireline/tone-search.htm?start=0&kTone=10
to determine the frequency and cadence.
then under the voice port I added the following:
supervisory custom-cptone XXXX
Is there any thing else before upgrading the system???
10-17-2009 05:03 AM
That seems all good, sometime actual tones don't match database, in which case you have to record and frequency analyze, kind of tedious process.
10-17-2009 05:30 AM
can you give me more details. how I can record and analyze the frequency?
do you know some program to do this??
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