[A*UG] How to wire Asterisk to stations?
fmouse-aaug at fmp.com
Fri Oct 21 16:44:55 CDT 2005
I believe the IP phones use regular cat5 ethernet lines, yes? Treat them on
the network as if they were computers connected through a hub. You'll need
to address the appropriate traffic to the interface on your Asterisk box.
POTS phones, of course, use single twisted pairs, and if you use cat5 you
can get 4 phone lines in a single cat5 cable and wire them any way you wish.
There's no magic there.
Thus spake Larry Alkoff on Fri, Oct 21, 2005 at 03:39:22PM CDT
> I've just finished the O-Reilly book on Asterisk and setup a separate
> computer with Asterisk at Home.
> The book has a lot of good information but for some reason does not
> discuss the physical wiring that goes to stations (FXS) and FXOs.
> I understand that cat5 type wire would be used.
> What commonly used standards, if any, are used on the various colored
> wires? What signals and voltages to they carry?
> Presently I have a lot of POTS telephones all wired in 'home run' with a
> single cat5 from line 1 of a station RJ-11 station block to type 66
> blocks where the Asterisk equipment will live.
> Can I do the same with Asterisk station lines - that is each extension
> would be a single pair or two from Asterisk that carries power, ringing
> current and voice.
> What equipment do I need at the Asterisk end to connect multiple analog
> POTS phone each station?
> I also need to know how many wire pairs are needed for non-POTS phones
> and what those wire carry.
> If feasable the easiest wiring method is to end up with all POTS phones
> on the default inner pair line 1 (blue) and non-POTS phones on line 2
> (orange) and if necessary, 3 (green) leaving 4 (extra pair possibly used
> for direct connection to CO line for emergencies). That way any single
> (not double) line POTS phone can be safely plugged in as they are all on
> line 1. Could this be done?
> My mnemonic for telephone wire color coding is "BOG Brown".
> I'm interested in any comments on physical wiring.
> Larry Alkoff N2LA - Austin TX
> Using Thunderbird on Slackware Linux
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> Austin-Asterisk-Users-Group at bybent.com
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