Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!netsys!vector!telecom-gateway From: westmark!dave@rutgers.edu (Dave Levenson) Newsgroups: comp.dcom.telecom Subject: Re: Area Codes - a few comments Message-ID: Date: 14 May 89 12:50:03 GMT Sender: news@vector.Dallas.TX.US Organization: Westmark, Inc., Warren, NJ, USA Lines: 35 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 164, message 5 of 7 In article , cmoore@brl.mil (VLD/VMB) writes: > ...But why can't numbers like 210-310-311-511 be used? [as area codes] In NJ Bell territory, 311 produces a ring-no-answer. I've been told that it produces automatic number identification in a few central offices, but I haven't heard which (anyone else in NJ know of any?). I think most of the N10 codes are/were assigned to TWX, weren't they? My copy of "Notes on the Intra-Lata Networks" (1984, Bellcore) lists codes 211, 311, 511, and 711 as RESERVED. This publication extimates that by 1995, we will need Interchangeable NPA codes. This refers to area codes of the NNX format, just like CO codes. Before that time, ALL local switching systems must have been modified to require 1+ dialing. If anything, recent events indicate that the 1995 estimate may be off. I wonder how much difficulty would be caused if the USA and Canada were to be assigned different country codes? This would allow re-assignment in the USA of area codes presently assigned in Canada (and vice versa) and might push that 1995 date back a few years. -- Dave Levenson {uunet | rutgers | att}!westmark!dave ...the man in the mooney [Moderator's Note: You may recall that numerical list of area codes published several months ago in the Digest. In that list, *I* said that the N10 codes were all assigned to Western Union (formerly AT&T) TWX. The response from a couple people was that I was grossly in error....that those numbers were just 'artifacts' with no relevance to the voice network. If that's so, then why won't they be used for area codes, now that we need a few spares? PT]