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.
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.
You need to configure the tones explicitly for your country.
And, some IOS versions have bugs that prevent it from working.
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
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.
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.
but I am not in US
Inability to disconnect on the US 'offhook alert'
Do you think this is the problem???
I already have configured them
this is the configuration:
supervisory disconnect dualtone mid-call
supervisory custom-cptone STC
input gain 14
output attenuation -6
timeouts call-disconnect 5
timeouts ringing 5
timeouts wait-release 5
timing hookflash-out 50
connection plar 5003
voice class custom-cptone
Thank you too much for your response:
how I can know the configuration for:
voice class custom-cptone XXXX
I used this site:
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???
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.
You can record by hooking an IPCP, capture packets on the PC with wireshark and export the sound file.
I then use cool edit to frequency analyze, others may be available.
I faced the same problem and I tried all frequncies, but still the same issue.
Did u solve it "JustForVoice", or it is really a bug?