[Asterisk-Users] How to number extensions - Which way is best?

[brett-asterisk at worldcall.net]

Tim Burt wrote:

>PLUS...
>Numbering your extensions in the "100" to "119" range (or for larger
>environments 1000 to 1199) will provide the cleanest interface.  This is
>because a leading 1 indicates a long distance call, and the number
>following a leading 1 cannot be a "0" or a "1" for long distance. 
>Therefore, asterisk can determine with the second digit dialed that you
>are dialing an extension, and not a long distance number.
>  
>


Just a general comment.. Slightly OT, but others might find it 
interesting. The ORIGINAL intention of leading a phone number with a "1" 
was NOT a toll indication. In fact, it was explicitly NOT a toll 
indicator. Rather it was an indicator that 10 digits would follow. It 
just happened that that _typically_ a 10 digit phone number was a toll 
call. Given that and the natual evolution of the network, the original 
meaning was bastardized.

Keep in mind that this whole concept of "toll" is largely a business 
decision. So are "calling areas". Rate centers, NPA/NXX, NPA, LATA all 
do NOT indicate any kind of toll arrangement. Typically calling areas 
are made up of groups of rate centers. And even then there are very 
complicated tables of what calling areas include what rate centers and 
for what direction the call is going (into or out of the rate center). 
That topped with "metro" lines make this a particular confusing topic.

Personally a "1" at the begining of a phone number is of no use to me. 
So for domestic LD, I just toss it out the window regardless of the toll 
condition.

Here's a thought. A user is dialing a local number (local for them) but 
accidently dials it 1+.. Is it LD?
-Brett