Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!killer!vector!telecom-gateway From: stiatl!pda@gatech.edu (Paul Anderson) Newsgroups: comp.dcom.telecom Subject: Re: How big can a Local Dialing Area be? Message-ID: Date: 5 Apr 89 00:49:32 GMT Sender: news@vector.UUCP Reply-To: Paul Anderson Organization: Sales Technologies Inc., a Dun & Bradstreet Company Lines: 33 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 9, issue 124, message 2 of 7 In article pf@islington-terrace.csc.ti.com (Paul Fuqua) writes: > Subject: How big can a Local Dialing Area be? >The local calling area in Dallas includes the city itself, plus most of >the first two rings of suburbs and DFW airport. That's a rough square >25 or 30 miles on a side, so 600 to 900 square miles. Between 1 and 2 >million people, more than 300 exchanges. Hmmm. In this light, I think that the Atlanta calling region -may- be larger geographically (and I will take a stab at a population for that region to be around 4 million people). The Atlanta local calling area extends from about 20 miles on one side of the 'perimeter' to 20 miles out on the other side. The I285 ('perimeter') is conservatively 20 miles across. This yields a diameter of 60 miles or ~ 2826 sq miles. Now, while you are all coughing, I have made calls this distance regularly and drive to these locations to do business! I searched the phone book for a listing of the exchanges and was unable to find anything. There are, however, 400 private residence listings per page in the phone book for all 2004 pages of it yielding a total of 801,600 residence listings. If the average household headcount of 4 per holds, then this bears out an estimate of about 4 million people in the metro area. The business section averages 350 listings per page for 700 pages for a total of 245,000 *listed* lines. The real number is at least probably double that, but more likely triple that, so lets say business lines account for 600,000 more. That yields a total of 1.4 million lines. This results in 495 lines per sq mile. Big area, but not real dense like in New York City. Paul -- Paul Anderson gatech!stiatl!pda (404) 841-4000 X isn't just an adventure, X is a way of life...