[asterisk-users] Maximum cable length for analog phone from FXSport

[Cary Fitch]

Sigh, lets repeal Ohm's law.
;-)

In practice the controlling rules are:

Murphy's Law:  "If anything can go wrong it will."

O'Toole's corollary to Murphy's law:  "And, it will produce the worst
possible results."

Cary Fitch

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tzafrir Cohen
Sent: Tuesday, May 26, 2009 10:56 AM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] Maximum cable length for analog phone from
FXSport

On Tue, May 26, 2009 at 05:39:46PM +0200, randulo wrote:
> On Tue, May 26, 2009 at 5:31 PM, Danny Nicholas <danny at debsinc.com> wrote:
> > I run my analog telco over cat5, but that's in-house and definitely not
3km. That sounds really far for current loop stuff.
> 
> I was doing that too. I asked this same question a few years ago and
> the answer was 100-200 meters. This is just a quick rule of thumb, but
> it seems about right. 3km, I doubt that would work, but it depends, as
> someone said, totally depending on ohm's law :)

If it were to depend solely on Ohm's law, than 3km would be marginal but
probably within reach. Not exactly sure what other factors are there to 
count.

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir

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