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Volume 29 : Issue 6 : "text" Format

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 Re: AT&T asking FCC for "end date" of switched network...

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Date: Tue, 5 Jan 2010 22:01:37 -0600 (CST) From: Robert Bonomi <bonomi@mail.r-bonomi.com> To: redacted@invalid.telecom.csail.mit.edu Subject: Re: AT&T asking FCC for "end date" of switched network... Message-ID: <201001060401.o0641bnY020088@mail.r-bonomi.com> In article <3eee6fce-7f2c-44d0-a23f-b9f1a7a7f4ca@d20g2000yqh.googlegroups.com>, <hancock4@bbs.cpcn.com> wrote: > On Jan 4, 12:31 am, "Paul Hoffman" <prhkgh.remove-t...@and-this- > too.comcast.net> wrote: > >> Recently AT&T asked the FCC to set a date to transition completely >> off traditional "switched technology" telephone networking, in favor >> of packet switched (internet-style) networking. [AT&T claimed that] >> maintaining two parallel networks that accomplish essentially the >> same thing was wasteful and uneconomical, and this has caused quite >> a bit of posts, especially between collectors and users of 'old >> telephone technology' such as me. >> >> At the time I read about AT&T's request I did not realize the >> petition was for the technology in and between central offices, and >> not a bid to remove all copper twisted pair out to consumer's >> premises.  However with the ever-increasing amount of fiber either >> to premises or to centralized communication near the end users, my >> [concerns] remain the same. > > Where does Verizon fit in all of this? Isn't today's at&t a > relatively small company? AT&T: Current assets $265 Billion 2008 gross revenues $124 *Billion*. (operating expenses $100 Billion) 2008 gross profit (revenues less expenses) $24 Billion Doesn't sound like a 'small' company to me. Others may have a different opinion. > There are several issues in play here, some transparent to the home > subscriber, some possibly of import. > > networks being a pain is correct. It's digital signals using a > protocol. When we make a telephone call, we do not get dedicated use > of a given digital line between two points. False to fact. One does get dedicated use of a given digital 'circuit' between the two points. This is what the 'connection set-up' when a call is placed establishes It may well be time-division-multiplexed (e.g. a DS-0 in a DS-1) on a common physical connection, but the full capacity of that circuit IS dedicated for your use, regardless of how much, or how little, use you actually make of it during the call. That connection is _yours_, for your exclusive use, until the 'connection tear-down' at the end of the call. This is why the telco backbone is referenced as a 'circuit-switched' architecture, not a 'packet-switched' one.
TELECOM Digest is an electronic journal devoted mostly to telecom- munications topics. It is circulated anywhere there is email, in addition to Usenet, where it appears as the moderated newsgroup 'comp.dcom.telecom'. TELECOM Digest is a not-for-profit, mostly non-commercial educational service offered to the Internet by Bill Horne. All the contents of the Digest are compilation-copyrighted. You may reprint articles in some other media on an occasional basis, but please attribute my work and that of the original author. The Telecom Digest is moderated by Bill Horne. Contact information: Bill Horne Telecom Digest 43 Deerfield Road Sharon MA 02067-2301 781-784-7287 bill at horne dot net Subscribe: telecom-request@telecom-digest.org?body=subscribe telecom Unsubscribe: telecom-request@telecom-digest.org?body=unsubscribe telecom This Digest is the oldest continuing e-journal about telecomm- unications on the Internet, having been founded in August, 1981 and published continuously since then. Our archives are available for your review/research. We believe we are the oldest e-zine/mailing list on the internet in any category! URL information: http://telecom-digest.org Copyright (C) 2009 TELECOM Digest. All rights reserved. Our attorney is Bill Levant, of Blue Bell, PA. --------------------------------------------------------------- Finally, the Digest is funded by gifts from generous readers such as yourself who provide funding in amounts deemed appropriate. Your help is important and appreciated. A suggested donation of fifty dollars per year per reader is considered appropriate. See our address above. Please make at least a single donation to cover the cost of processing your name to the mailing list. All opinions expressed herein are deemed to be those of the author. Any organizations listed are for identification purposes only and messages should not be considered any official expression by the organization.
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