[Asterisk-Users] BT ISDN30e and presentation numbers

[Peter Svensson]

On Fri, 8 Oct 2004, Asterisk wrote:

> I've just got off the line from my account manager, and she insists that I
> can only have one presentation number per ISDN30e bearer line. Oh, I can
> also have any of my ddi numbers presented ...
> 
> We have several business units each using the ISDN30e, and I wanted each of
> them to present their own numbers, so that anyone doing a 1471 would then
> call the appropriate number. Asterisk recognises these numbers, and sends
> them to the appropriate destination.
> 
> If I have a hundred different DDI numbers presented, why can't I chose
> several different numbers that aren't a DDI ? 

In most countries you are not supposed to be able to send a calling number 
other than one registered for that line. I.e., you should not be able to 
spoof your caller id. Whether they are able to change this restriction or 
not depends on the switch they are using, I guess.

Are all the numbers you want to send out also coming in on the ISDN30e? In 
that case there would be no spoofing so that argument will not be usable 
by BT.

Peter