[asterisk-users] OT - Avantages of ISDN PtP and PtmP

[Philipp Kempgen]

Olivier schrieb:

> Reading  http://www.asteriskguru.com/tutorials/bri.html , it seems PtP is
> the way to connect businesses but if you read
> http://public.swbell.net/ISDN/connect.html you would think the opposite.

That's not true, although "multipoint" sounds better than just
one "point". :-)

PtMP: Usually you connect your devices (phones etc.) directly
to the line (although you could connect a PBX). Each of the phones
has a totally different number. PtMP is what home users get unless
they request something else.

PtP: You connect just one device which is your PBX. You get a
block of numbers (xx / xxx / xxxx / ...). The nice thing is
that you can easily map these external DID numbers to internal
extensions, i.e. ......xx -> xx
More expensive than PtMP.

btw: _PRI_ is always PtP.


   Philipp Kempgen

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