Barring Internal calls 1

Maybe Tl and the other stellar programmers can figure out something, BUT, your code wont work.

IPO matches in this order:
Extension
User short code
System short code

So the digits dialed will never get to teh short code, IF it matches an extension.

So you are saying there is no way.

I have seen it work but i am not sure which version and if it still works.
Try this?

3XXX
Barred
3N
Line id 0

BAZINGA!

I'm not insane, my mother had me tested!

I system telephony set the dial digits counter to 1, set the dial delay count to 0.
make a shortcode:
SC = 3
TN = empty
Action = barred
Line ID = 0
This worked until 3.2 never tried on newer versions.

Depends to some extent where you are. Hopefully not on trunks which need the digits sent enbloc. If not, create a prefix for external calls from public extensions and set the default users for those extensions to hotdial that prefix when they go off-hook.

In ARS you can set a dial delay timer and/or a semicolon at the end of a shortcode which overrules the system settings.

Another thought:
Make a system shortcode:

For all the good people
SC = ?D
TN = 0N
Action = dial
Line ID = ARS:50

In ARS 50
Secondary dial tone enabled
Dial delay Time = 4
SC = N
TN = N
Action = Dial
Line ID = your out going line ID

For the US and other dialling out with a 9
SC = ?D
TN = 9N
Action = dial
Line ID = ARS:50

In ARS 50
Secondary dial tone enabled
Dial delay Time = 4
SC = N;
TN = N
Action = Dial
Line ID = your out going line ID

This makes it impossible for ALL users to dial a internal number BUT programmed buttons can always dial internal users.