[134162] in North American Network Operators' Group
RE: Muni Fiber Last Mile - a contrary opinion
daemon@ATHENA.MIT.EDU (Frank Bulk)
Mon Dec 27 17:11:49 2010
X-Barracuda-Envelope-From: frnkblk@iname.com
From: "Frank Bulk" <frnkblk@iname.com>
To: "'Owen DeLong'" <owen@delong.com>
In-Reply-To: <27362167-FDAC-45D7-BD67-EEBCC1BA13B6@delong.com>
Date: Mon, 27 Dec 2010 16:10:51 -0600
Cc: NANOG <nanog@nanog.org>
Reply-To: frnkblk@iname.com
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Cable modem is no different than a DSL modem, right? ;)
If it's an eMTA, it may have battery backup, though the operational default
is to disable the Ethernet port after a few minutes to provide the maximum
amount of dial-tone.
Frank
-----Original Message-----
From: Owen DeLong [mailto:owen@delong.com]
Sent: Monday, December 27, 2010 12:05 AM
To: frnkblk@iname.com
Cc: NANOG; Jared Mauch
Subject: Re: Muni Fiber Last Mile - a contrary opinion
On Dec 26, 2010, at 7:35 PM, Frank Bulk - iName.com wrote:
<snip>
>>> You are likely already at the mercy of some local hut for your dialtone.
>> Very few things home run to the co these days. It's unlikely any hut has
>> more than 24 hours of battery.
>>>
>> I know this is true where FTTN overlays have been built. However, in the
>> majority of California, at least, that is still more the exception than
>> the
>> rule and there is usually a Cat-3 Copper home-run for local dialtone.
>
> [Frank Bulk]
> Here in the midwest each and every of the telcos that I've talked to or
> worked with feeds dialtone for their DSL customers from the same equipment
> that serves the DSL. To do otherwise would require a splitter shelf in
each
> node.
>
In California, that is, by and large, the CO.
<snip>
>> However, 24 hours of dialtone after something happens still exceeds the
>> average cablemodem duration after the
>> power flickers.
>
> [Frank Bulk]
> Some MSOs (including ourselves) have power systems (e.g. Alpha) in place
> throughout the plant to provide backup power for at least some time.
>
Does that back up the cablemodem in the residence? If not, game over.
Owen
