34 Years of the Digest ... founded August 21, 1981
Copyright © 2015 E. William Horne. All Rights Reserved.

The Telecom Digest for Aug 30, 2015
Volume 34 : Issue 162 : "text" Format
Messages in this Issue:
Re: Southern New Jersey residents want fairness from Verizon (Eric Tappert)

I think opinions should be judged of by their influences and effects; and if a man holds none that tend to make him less virtuous or more vicious, it may be concluded that he holds none that are dangerous, which I hope is the case with me
Benjamin Franklin

See the bottom of this issue for subscription and archive details.

Date: Sat, 29 Aug 2015 09:51:47 -0400 From: Eric Tappert <e.tappert.spamnot@frontier.com> To: telecomdigestsubmissions.remove-this@and-this-too.telecom-digest.org. Subject: Re: Southern New Jersey residents want fairness from Verizon Message-ID: <agd3ualbv1d2rgpg1c05dqa8umcskphj1p@4ax.com> On Thu, 27 Aug 2015 21:47:50 -0700 (PDT), Neal McLain <nmclain.remove-this@and-this-too.annsgarden.com> wrote: >On 26 Aug 2015 08:54:54 GMT, rpw3@rpw3.org > (Rob Warnock) wrote: > >> John Levine <johnl@iecc.com >> wrote: >> +--------------- >> | One of the things I've always wondered is if they get away >> | with the Voicelink stuff and they abandon all of the wires, >> | how's the mobile backhaul going to work? >> +--------------- >> >> Well, from the cell towers to the COs, point-to-point microwave, >> of course. ;-} [Or fiber. Maybe.] The real question is if >> they abandon all of the wires, how are they going to power the >> cell towers, especially during emergencies after the batteries >> run out?!?!? [Solar? No. Think hurricanes. Or blizzards. Or >> haboobs. Or smoke from wildfires.] > >As others have pointed out, cell towers don't get their operating power from >central offices -- they get it from local electrical power utilities. Check >out any cell tower and you'll see power lines feeding equipment buildings. [Moderator Snip] >Whatever the situation, the equipment gets operating power from the local >power utility, either as a direct customer or as part of a lease agreement >with a third party building owner. > >***** Moderator's Note ***** > >When ILECs were still leasing PBXes, it was common for the PBX backup >batteries to be charged from the CO, using multiple pairs of wire in a >trunk cable. Bill, I'm going to call you on this one. Write the equations and you'll find a single telephone pair is incapable of providing more than about a Watt or so of power remotely, It is inconceivable that any telco would use hundreds of pairs to charge a battery for a PBX, The battery supplied power to the switch and was charged by local power, thus the switch operated on local power.What PBX's did have was a throwover to allow a phone to operate as a standard line when power failed so that all communication capability wasn't lost.. On the other hand, that Watt or so is enough to power a repeater or a regenerator on a carrier system, although many of those systems used higher voltages than the standard 48 Volt plant.. So, citation please.... Eric Tappert ***** Moderator's Note ***** I don't have one, sorry. Right after I started out, I asked a "rated" man why certain pairs were designated for "battery supply", and he said they were for charging PBX batteries. Anyone else have a citation? Bill Horne Moderator

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 educational service offered to the Internet by Bill Horne.

The Telecom Digest is moderated by Bill Horne.
Contact information: Bill Horne
Telecom Digest
43 Deerfield Road
Sharon MA 02067-2301
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 © 2015 E. William Horne. All rights reserved.

Finally, the Digest is funded by gifts from generous readers such as yourself. Thank you!

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.

End of The Telecom Digest (1 message)

Return to Archives ** Older Issues