I used to work on the Telco equipment at Browns Ferry Nuclear Power Plant. Our main switch, a Dimension 2000 (we called it the Demented 2000) supported 1700 extensions. The system ran on a stack of Edison batteries that were housed & maintained in the next bay.
The phone system was actually powered by the batteries 24/7. The batteries were kept charged by a huge charger that was backed up by a generator set. This configuration guaranteed 100% uptime since a loss of line power would just stop the batteries from charging. The batteries were huge clear glass cells that were wired in series to make 48 volts. There were two banks of batteries so that one could be taken off line while the other was serviced. Our second "modern" system was a System 75 that supported an additional 750 phone lines. This system had a more conventional UPS that measured 4' square by 4' tall. Thanks, Tom Hargrave www.kegkits.com 256-656-1924 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Robbins Sent: Saturday, June 21, 2008 11:56 AM To: Mercedes Discussion List Subject: Re: [MBZ] dial tone LWB250 wrote: > Feh, they're not *that* big. A 500kW standby set is > probably the size of a 300D. Get up to 2000kW and > you're talking small shed, maybe. I've only been in one telco center... and it was pretty big. It was located in the middle of a research park though so maybe they needed extra battery capacity? John _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.4.1/1512 - Release Date: 6/21/2008 9:27 AM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.4.1/1512 - Release Date: 6/21/2008 9:27 AM _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
