I must clarify my original message. Maybe
confusion is due to my poor english. So I'll make a list of statements:
- Each ISDN line in Italy can be splitted in two analog lines
- You can use those analog lines as normal analog lines
- I have already invested in analog hardware (my
fault of course) for both FSX and FXO
- ISDN hardware installed by the telco can, in
Italy, be programmed to send a "billing pulse".
- I guess this billing pulse is sent on each of
the two analog lines in which a single ISDN line
can be splitted (so there's no risk, I guess, for double billing).
- I'm considering if there's a small chance for
me to avoid buying additional hardware (ISDN
cards or gateways) and have an accurate billing
using those analog lines resulting from splitting an ISDN line.
- To get an accurate billing, I'm wandering if
it's possibile to use "billing pulse" provided by those analog lines.
- I have full specifications of the "billing pulse" provided:
frequency
....................................................................
12 kHz ± 1%
level
..........................................................................
200 mVrms on 200
distortion...................................................................
< 5%
pulse duration
.............................................................125 ± 25 ms
pause duration
................................................................> 180 ms
period
.......................................................................> 300 ms
Do you think it's worth considering it?
Rgds
Stefano
> Bill them both. We are talking about mere BRI's, right:-) Good catch,
> David. As others noted, billing pulse really applies to analogue lines
> only, and ISDN providers should always send status.
>
> Yuan Liu
Thanks, Yuan
But my confusion came from the original post stating the use of ISDN
circuits for this implementation. Id ISDN is in fact the circuit of
choice for this app, I agree why wouldn't he simply use the cause codes
for billing purposes. We have a lot of experience in telecommunications
billing, and have always found cause codes to be more than sufficient
even for weird tiers, and bizarre rounding functions.
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