> Technically a channelized T1 line is NOT capable of handling ISDN.
>
> HOWEVER, data is data. Channelized T1 lines CAN handle voice calls. And
> an ISDN DOSBS call is treated by the telco like a voice call. So you are
> taking advantage of this little tidbit to route call that originates as ISDN
> onto a non-ISDN line. You don't need a D channel to *receive* an ISDN DOSBS
> call, just to make one. So all we are doing is taking that 56K data stream
> and decoding it just as we would if it were on a PRI.
I'd love to see a technical description of what Livingston is doing to
achieve this. Do you guys have such a thing?
> What you need to do on the client end is order the BRI ISDN line with
> speech capabilities. Do NOT order a data-only BRI or you can't make a
> DOSBS call - period.
I have a question here too. I have Black's _ISDN and SS7_ book, and from
what I've seen, there is no mention of a field in either layer 2 or 3 that
distinguishes an ISDN voice call from an ISDN data call. Can somebody
tell me how the two are distinguishable?
'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'`'
`' Jeff Carneal / Sys Admin \ Apex Internet `'
`' jeff@apex.net http://www.apex.net `'
`' The opinions expressed above aren't really mine. They belong to `'
`' someone else who also refuses to take responsibility for them. `'
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