Actually, many of the EMTAs in the cable world derive AC power from the coax... Powered inline just like all the amps are. At least the ones that hang outside your house... But with the Vonage idea of stuff inside your house that can't be done... Old federal laws about the concept that the electric company is the only one who can deliver power into your house. Scott -----Original Message----- From: Deleskie, Jim [mailto:Jim.Deleskie@teleglobe.ca] Sent: Friday, March 04, 2005 12:47 PM To: 'Christopher Woodfield'; swm@emanon.com Cc: nanog@nanog.org; 'John Levine'; fergdawg@netzero.net Subject: RE: More on Vonage service disruptions... There are EMTAs cable modems with VoIP ATA's that have 4 hr battery in the market already. -Jim -----Original Message----- From: Christopher Woodfield [mailto:rekoil@semihuman.com] Sent: Friday, March 04, 2005 12:46 PM To: swm@emanon.com Cc: nanog@nanog.org; 'John Levine'; fergdawg@netzero.net Subject: Re: More on Vonage service disruptions... This does bring up a hardware design question...I'm wondering how difficult of an engineering/marketing problem it would be to design VoIP adapters with built-in backup batteries. How does the power consumption profile of a VoIP adapter compare to, say, a cellphone? What would this add to the cost of the device, and how long could the battery last? -C On Mar 3, 2005, at 10:25 PM, Scott Morris wrote:

Perhaps it varies by state, but I thought part of the E-911 service regulations was that if you were offering (charging) for it, you had to offer it as "lifeline" service which meant it had to survive power outage. *shrug*

I guess the original regs weren't written with these things in mind!

Scott

-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of John Levine Sent: Thursday, March 03, 2005 9:17 PM To: nanog@nanog.org Cc: fergdawg@netzero.net Subject: Re: More on Vonage service disruptions...

...

There was actually a story in USA Today a couple of days ago where a family tried calling 911 on their VoIP service during a burglary only to be told by a recorded message that they must "dial 911 from another phone"...

I was surprised to see on Packet8's web site that they now offer E911 in a lot of places. You have to have a local phone number and pay an extra $1.50/mo. They remind you that if your power goes out, your phone still won't work, but if you can call 911, it'll be a real 911 call.

This still has little to do with port blocking, but a lot to do with the whole question of what level of service people are paying for vs. what level they think they are paying for.

Regards, John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies", Information Superhighwayman wanna-be, http://www.johnlevine.com, Mayor "I dropped the toothpaste", said Tom, crestfallenly.