[Asterisk-Users] Advice on BT ISDN Services (UK)

[Linus Surguy]

> OK. You need one of the following:
>
> Home Highway
> Business Highway
> ISDN2e
>
> I can confirm that * works happily with all three - my office lines are
(for
> various reasons, none of which apply any more!) on Business Highway.
>
> If you want to use a Fritz! card, then you MUST have the line set up in
PTMP
> (point to multi-point) mode. Home/Business Highway only work this way, so
> that's not a problem, but ISDN2e can be either PTP (point to point) or
PTMP.
> BT PTMP only supports MSNs (which you can have a maximum of 8). PTP only
> supports DDIs (which you can have as many as you can afford). Essentially,

This isnt actually at all correct, we certainly have a Business Highway line
in PTP mode with MSN! (Although you are right in that this is the default)