[A*UG] How to wire Asterisk to stations?

[Lindsay Haisley]

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
> -- 
> Larry Alkoff N2LA - Austin TX
> Using Thunderbird on Slackware Linux
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