Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!texbell!vector!telecom-gateway From: myerston@cts.sri.com Newsgroups: comp.dcom.telecom Subject: Re: Buffalo, Texas Message-ID:Date: 18 Aug 89 17:08:00 GMT Sender: news@vector.Dallas.TX.US Organization: SRI Intl, Inc., Menlo Park, CA 94025 [(415)326-6200] Lines: 20 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 307, message 8 of 8 Maybe EVERYBODY is right. What is Central Office is called depends largely on who you talk to and what you are talking about. Some (maybe not all) variations: o Base/Control Group. What the engineers call it. Used to be assigned by Western Electric. Base unique to location, control group to switching entity. Form XXXX-CX as in 6A97-C4 equals a 1AESS in LA Grand (see below) o Common Language ID. A combination of the place name contracted (they spell out how) and, if necessary, a number. PLALCA02 equals Palo Alto, California 02. I >think< that this is where the billing location comes from. o Street Address. Used mostly by sales and support people and those who work there. 666 Howard is an example. o The old exchange name like CEDAR 2 or whatever. Popularly used by oldtimers for oldtime offices. The modern equivalent of just the NXX is seldom used since modern machines can support multiple 10K groups with unrelated NXX codes. Maybe there are still more variations out there.