Posted: Tue May 26, 2009 3:59 pm Post subject: [asterisk-users] Maximum cable length for analog phone from
Tzafrir Cohen wrote:
Quote:
On Tue, May 26, 2009 at 05:39:46PM +0200, randulo wrote:
> On Tue, May 26, 2009 at 5:31 PM, Danny Nicholas <danny@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.
The copper planning limit (or whatever local term your telco uses) is
typically 10km.
Steve
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