[Asterisk-Users] hangup detection

[Sean Adams]

Not having any luck with just tweaking those values. I'm a bit confused 
still as to how the different busy detection choices are supposed to 
work - I've uncommented a few of the #if 0 to see if it's doing 
anything, and I can't see any indiciation that it is. Don't the 
specific off-hook tones need to be in dsp.c, or is it intended that 
asterisk should match the signal just by the timing?

Here's some information I found which confirms the tones I measured:

http://www.hackfaq.org/telephony-27.shtml

------
Receiver Off-Hook Tone

This tone is used to cause off-hook customers to replace the receiver 
on-hook on a permanent signal call and to signal a non-PBX off-hook 
line when ringing key is operated by a switchboard operator.


Receiver Off-Hook Tone is 1400 Hz, 2060 Hz, 2450 Hz and 2600 Hz at 0 
dBm0/frequency on and off every .1 second. On some older space division 
switching systems Receiver Off-Hook was 1400 Hz, 2060 Hz, 2450 Hz and 
2600 Hz at +5 VU on and off every .1 second. On a No. 5 ESS this 
continues for 30 seconds. On a No. 2/2B ESS this continues for 40 
seconds. On some other AT&T switches there are two iterations of 50 
seconds each.
-----




On Jan 2, 2004, at 10:46 AM, Martin Pycko wrote:

> busydetect should help you. Set busycount=10 busydetect=yes in 
> zapata.conf
> and measure the length of the tone .. should be equal the pause too.
>
> Then in dsp.c change the vaules BUSY_MIN and BUSY_MAX for example like
> this: your result - 100, your result + 100 [ms]
>
> regards
> Martin
>
> On Fri, 2 Jan 2004, Sean Adams wrote:
>
>>
>> So I made the mistake of buying a Carrier Access channel bank without
>> noticing the page on the wiki about the fact that they don't support
>> disconnect supervision (bastards!). However, apart from that, I do 
>> have
>> it working fine for incoming calls.
>>
>> Is there some trick to get asterisk to detect the hangup tones from
>> SBC? I've tried busydetect and callprogress as suggested, but neither
>> seems to work.  The tone is not a busy tone, but that ear-piercing 
>> high
>> pitched buzzer. It goes "if you'd like to make a call, please hang up
>> and try again. If you need help, hang up and then dial your operator.
>> BEEP BEEP BEEP etc."
>>
>> I am set up here with recording gear and spectrum analyzer software, 
>> so
>> I can identify the tones and timing if necessary. However I'm not sure
>> how to make asterisk detect the tones, or if this work has already 
>> been
>> done. Anyone know?
>>
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>>
>
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