On Mar 14, 2006, at 3:53 AM, artifex maximus wrote:
My asterisk system seems to have problems detecting hangups. I am
getting a LOT of voicemails with dialtone or silence.
I am using an external gateway (wellgate 3701a) and don't have zaptel
at all.
I think your 3701a don't "understand" hangup tone (as our 3802 did and
keep line busy after disconnect).
You need training the device. We had recorded the busy tone and
analyze with an audio editor (tone frequency and duration) and entered
the configuration via telnet interface (I think web interface is good
as well for this). And as a second chance we entered the values from
the suggested pdf in indications.conf:
http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf
Thanks a lot for the helpful info... I think. I am still not clear on
where to configure this.
Are you saying that the "busy" tone is the tone used to force a hangup?
I guess this makes sense, but I guess I thought there might be a
special unique hangup tone(shows what I know).
Anyhow, your information has driven me back to the documentation
(ouch) and I see that command line serial port configuration actually
has options that are not available at all through the web interface.
So tonight I hacked up a serial cable (for mac) and fired up a terminal
session on an old Powermac 9600 running 10.2.
This allows me to use the command line configuration, which includes
both a polarity reversal option (sysconf -onhook 1) and also has a
method for actually recording and analyzing the "disconnect tone". I
have enabled the polarity reversal option, and that looks good at
present.
So, thanks again for your insights into this device! Any ideas on RFC
2833 DTMF issues I am having ?
;~)
Thanks,
Marty
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