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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