On Fri, 8 Aug 1997, Jonah Yokubaitis wrote:
Incorrect. Stop using AC equipment in your pops. Use DC equipment and get a _good_ DC Powerplant. Every carrier Class4/5 switchroom usually has 10-20,0000 AMP/hours of standby power. 1 DSC or Nortel switch sucks _quite_ a bit more power than even the largest of superpops. Every carrier has _at least_ 4hours of battery plant (most have 8-12). Relying on generators is a _bad_ idea.
Ok, let me clarify. We have DC gear, most of our POPs also have vary large AC UPS systems because we also have 100 - 200 colo racks. Most (around 90% of our colo customers want AC, so we need a large AC as well as DC system.
Its not hard to have 4-12hours of standby battery plant. Lucent/Lorain/Peco2 all make rather nice rectifiers, and C&D/Lucent/GDB all make some nice vented batteries. By going DC you also don't get hit with the inefficiencies of AC --> DC --> AC --> DC.
You can bet that MCI/Sprint don't have a piece of AC equipment in their facilities and most likely are laughing their asses off right now.
True. Nathan Stratton President, CTO, NetRail,Inc. ------------------------------------------------------------------------ Phone (888)NetRail NetRail, Inc. Fax (404)522-1939 230 Peachtree Suite 500 WWW http://www.netrail.net/ Atlanta, GA 30303 ------------------------------------------------------------------------ "No king is saved by the size of his army; no warrior escapes by his great strength. - Psalm 33:16