Avaya Dial Plan options

[CarsonWeaver]

I'm thinking of moving to a 7-digit dial plan, but instead of using the more traditional method of using more digits of the whole telephone number such as:
4-digit: 5701
5-digit: 8-5701
6-digit: 48-5701
7-digit: 348-5701 for say (555)348-5701

I'm thinking of going with a 3-digit site/office number and 4 digit extension.
101-xxxx
102-xxxx
103-xxxx
This way, dropping zero and nine, I can have up 799 offices, each with upto 7,999 extensions.

Seems simply, but am I missing anything that could cause me future problems? What am I missing?

I apprediate your help!
Carson

 

[DAVIDPAYNE]

There is nothing wrong with that idea, what we did in my last job was we use the 1st 3 digit of the DID number for each location. So if office A had number in the 123xxxx range, and office B had number is the 456xxx range, 123 was the prefix for office A ect. Worked out well, and gave us more options to get additional DID for each office that did not conflict with another office.

 

[4merAvaya]

The only issue with David's suggestion is if you end up with two locations that have the same office cone (NXX).

Kevin