Hello,
I've discovered that in Italy ISDN lines can be
programmed to generate a "billing pulse" every n
seconds (it dipends from the pricebook). The pulse has these figures:
frequency
....................................................................
12 kHz ± 1%
level
..........................................................................
200 mVrms on 200
distortion...................................................................
< 5%
pulse duration
.............................................................125 ± 25 ms
pause duration
................................................................> 180 ms
period
.......................................................................> 300 ms
Does someone know if these values can be used
somehow to get an accurate billing using asterisk
with these lines? Could be a matter of configuration or programming?
Thanks
Stefano
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