> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > > Behalf Of Matthew Black > > Sent: Tuesday, October 18, 2005 3:13 PM > > > Telephone service is beginning to be restored in the Long > > Beach area but is still sporadic. > > Our ATM WAN link through Sprint came back up around 1345 Central time, > and the two DS1s for the school's Internet service were revived about > fifteen minutes ago (1507 CDT). They've been rock-solid so something > must be going right out there. > > When I called Sprint about any information they might have for the > outage the tech said that the area was down due to a Verizon DACS > failure. That must have been a spectacular failure, because > I'm reading > that it wiped out most everything ( > http://www2.presstelegram.com/news/ci_3128087 indicates four tandems > hit?! ) in the area. The articles are primarily focusing on > the impact > to E911 services, followed with the hit to POTS lines. I have yet to > see any mention of impact to data in any of 'em. Here's what > intrigues > me about this outage: if it wiped out E911, most of the POTS and also > impacted data services (as Jay Hannigan and I can attest), how did the > cell towers that are also served by the network live through it?
The dependancy between all of those would be a DACS so that seems to make sense. I'm guessing the impacted circuits were DS3 or below, with Verizon providing resale of the Z ends. I'm not sure of the relation to E911 though. Could be, but it sounds odd since E911 has redundancies to tandems IIRC. My guess is water on a DACS bay or complete power loss in the CO (rarer than water on a DACS). -M<