OBi110 Disconnect detection in Spain (revisited)
hwittenb:
derketo-rick
This is the Cisco documentation that I can find:
"This value is the tone script which describes to the SPA the
tone to detect as a disconnect tone. The syntax follows a
standard Tone Script with some restrictions. Default value
is standard US reorder (fast busy) tone, for 4 seconds.
Restrictions:
• 2 frequency components must be given. If single frequency
is desired, the same frequency is used for both
• The tone level value is not used. –30 (dBm) should be used
for now.
• Only 1 segment set is allowed
• Total duration of the segment set is interpreted as the
minimum duration of the tone to trigger detection
• 6 segments of on/off time (seconds) can be specified. A 10%
margin is used to validated cadence characteristics of the
tone."
Page 182:
http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/csbpvga/ata/administration/guide/ATA_AG_v3_NC-WEB.pdf
also
http://en.wikipedia.org/wiki/ToneScript
Edit:
I found the following OBi Device Administration Guide
Version 01092013 dated September 2013.
http://www.obihai.com/OBiDeviceAdminGuide#_Toc367543110
The Guide has a section on Tone & Ring Patterns plus a few limited examples. I agree with your interpretation of the Cisco definition:
425-10;10;(.2+.2,.2+.2,.2+.6)
425 Hz at 10Dbm with the cadence 10-seconds of .2 sec on .2 sec off + .2 sec on .2 sec off + .2 sec on then 0.6 sec off for 1.6 sec total
You say by observation the sequence doesn't last just 10-seconds but lasts 40 seconds (1.6 x 25). That's a long time. Assuming the 10-seconds is the "minimum" duration it sounds to me like the spec matches the observed. Maybe there is something wrong with OBi's tone matching.
derketo-rick:
Quick note to say thanks to all for help, especially hwittenb for his research. I wanted to follow up quickly but did not have chance to try anything before returning to UK. I will try a few other settings (eg CPC) at the weekend and let you know if get anything to work.
The previous topic about this ended with forum 'hero' member Stewart tyrying to help but saying he could not get the OBi to match this pattern when he tried a recording of it as his Google VMX message, and he therefore gave up, but there was a message from OBi support saying they were going to help the OP offline, so I hoped there was a known 'official' solution. Support did get back to me on my own enquiry but just gave the UK settings (which it shipped with) and suggested I try the forums !
The two main options, assuming we are correct in our collective suspicion that this pattern is for some reason 'unrecognisable' by the OBi, are the CPC, if Telefonica use that signal, and the shrieking 'you left the phone off the hook' three-rising-tone signal which cuts in around a minute and a half after the 'disconnected' pattern. CPC would be an ideal replacement for the mystic tones if I can get it to work as it will occur much more quickly.
Thanks again.
Rick
hwittenb:
Whether you get a CPC (Calling Party Control) signal or a disconnect tone is a function of the PSTN Telco switch that your pstn line is connected to. The CPC signal is a momentary loss of voltage. It nominally lasts 500ms although, as Ianobi says, it can be much shorter than that.
The other option for disconnect detection is Silence Detection. The Obi's default settings appear to set to detect that with
DetectFarEndLongSilence: YES
SilenceDetectSensitivity: Medium (Low/Medium/High)
SilenceTimeThreshold: 60 seconds
Of course, this would occur after the disconnect tone and the subsequent shrieking.
hwittenb:
Looking at the tone examples in the OBi Admin Guide, specifically the SIT Tone, perhaps the OBi could detect the Spain Disconnect Tone if it is configured like this:
425-10;10;(1/0.2+0.2,1/0.2+0.2,1/0.2+0.2,0/0+0.4)
Which I believe is
425-10 425hz @ -10 dBm
10 seconds minimum duration
1/0.2+0.2 --> Freq 1 0.2 sec on, 0.2 sec off
1/0.2+0.2 --> Freq 1 0.2 sec on, 0.2 sec off
1/0.2+0.2 --> Freq 1 0.2 sec on, 0.2 sec off
0/0+0.4 ----> Tone 0 (silence) 0 sec on 0.4 sec off
http://www.obihai.com/OBiDeviceAdminGuide
Looking at the .wav file for the Spanish disconnect tone that was posted as a reference in an another earlier posting, my analysis program says it is 422Hz. You might try that if 425Hz doesn't do it.
Edit: I would also try specifying shorter time than 10 seconds if 10 seconds doesn't do it.
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