[Asterisk-Users] ddi???

[tim panton]

phil.dawson at marnock.com wrote:
> 
> Hi,
> 
> We are ordering a bank of numbers from our provider BT.  We will have an 
> ISDN30 with 8 channels enabled.  Is it possible to do this? Is this 
> known as DDI?  Can anyone give tips on how to configure the Asterisk 
> server so that users are available on the extensions.  
> 
> Hope this explains this better ...
> 
> 01925 838381                Switchboard
> 01925 838382                User 1
> 01925 838383                User 2
> 01925 838384                User 3
> 01925 838385                User 4
> 01925 838386                User 5
> 01925 838387                User 6
> 01925 838388                User 7
> 01925 838389                User 8
> 01925 838390                User 9
> 01925 838391                User 10
> 01925 838392                User 11
> 01925 838393                User 12
> 01925 838394                User 13
> 01925 838395                User 14
> 
> etc ...
> 
> 
> Thank you in advance!
> 

Yes, no problem to do. I've done this for our manchester office
(although with fewer people and on NTL's ISDN30).

You need to get BT to agree and allocate or port the numbers.
You need to agree how many digits BT will pass on to you
(probably 1925838395 but possibly just the last 2)

If you want your users Direct dial numbers to be presented
when the make calls then you need to tell BT that too,
or they will just use the 'main' number for everything.

Once you have that agreed, there is some work to do in
extensions.conf to make it all join up, but it wasn't
hard.

Drop me a mail if you need a hand or some examples.

(It gets easier if you make your internal extensions
match up in some way to the external numbers
eg 382 as user 1's internal extension number, it isn't
essential, but it lets you write a simpler dialplan
based on pattern matching)

Tim.