Accepted Solutions
Hi Benjamin,
IMO i do not think that upgrading the IOS your UC500 Device would help you very much, you probably need to configure the Disconnect Tones, and the easiest way to get this is asking to your Telco for the Dual Disconnect Tones Frequencies and Cadences, now if you can not find the disconnect tone from your Telco, we can provide you with 2 ways to get this tones:
1st Way using PCM Capture
The Steps to enable PCM capture is:
Enter configure terminal mode on the Router
1.- Enter "voice hpi capture buffer 3000000" to
configure the capture buffer.
2.- Enter "voice hpi capture destination flash:pcm.dat"
to specify the destination file.
Once configured the above we are ready to capture the PCM stream from the router.
To do so follow these steps:
Start a test call and leave it connected.
Enter "show call active voice brief" and determine what voice port the test call is using. "show voice call sum" will also show what ports are in use. Enter "test voice port 0/FX/0 pcm-dump caplog 7" where 0/FX/0 is the number of the voice port that has the test call connected.
You can check the status of the capture using the following command: sh voice hpi capture
This will show you the following output:
HPI Capture is on and is logging to URL flash:pcm.dat
11196 mesages sent to URL, 0 messages dropped
Message Buffer (total:inuse:free) 3048:0000:3048
Buffer Memory: 999744 bytes, Message size: 328 bytes
If the number of "messages sent to URL" is increasing at a steady state then the capture is working properly. If it is not, something is not working properly. Go back through the directions, confirm the voice-port number, and try the capture again.
When you finish the capturing, do the following:
test voice port 0/FX/O pcm-dump disable
conf ter
no voice hpi capture destination flash:pcm.dat
no voice hpi capture buffer 3000000
end
and you will need to open then a case with US in order to process the PCM Capture, basically we decode this file and using a utility to Analize Audio Files we can deliver something like this
voice class custom-cptone CUSTOMDISCO
dualtone disconnect
frequency Freq1 Freq2
cadence c1on c2off c3on c4 off ...
voice-port 0/fx/O
shut
supervisory disconnect dualtone mid-call
supervisory custom-cptone CUSTOMDISCO
timeouts call-disconnect 5
timeouts wait-release 5
no shut
Now the second way to get this tones, is to use Wire Shark and port mirroring
The Steps are:
1. Use Wire Shark to capture the RTP between the gateway and the phone when the call is disconnected the busy tones are playing and then save the G711ulaw payload in .AU format.
2. Load the audio file into a audio editing application to determine the on times and off times of the tones.
3. Select the Analyze option to do a frequency analysis. From the new window, you can move the cursor over the frequency peaks to determine the component tones. Round the frequency to the nearest 5hz. Measure the on time of the tone and the off time of the tone to determine the cadence.
4. Use these measured values to create a custom disconnect tone class
For more reference, please visit http://www.cisco.com/en/US/docs/ios/12_1t/12_1t3/feature/guide/dt_fxodt.html and please call us at our Support Line http://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html if you need assitance
Thank you
Victor.-
