In a past life, when landlines were more common, the yellow and black supported a second line. This is how you could have a two-line phone with only one plug.<br><br><div class="gmail_quote">On Wed, Feb 8, 2012 at 5:36 PM, Angelo McComis <span dir="ltr"><<a href="mailto:angelo@mccomis.com">angelo@mccomis.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Tom,<br>
<br>
Red and Green are all you need. Yellow and Black are deprecated.<br>
<br>
Because phones use DC voltage, polarity matters when splicing and<br>
patching it all together.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Angelo<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
<br>
On Feb 8, 2012, at 5:33 PM, Tom Cranston <<a href="mailto:thomas.w.cranston@gmail.com">thomas.w.cranston@gmail.com</a>> wrote:<br>
<br>
> Hi<br>
><br>
> A little off subject, but not entirely.<br>
><br>
> I am connecting 5 phone recepticles in different parts of<br>
> the house to my phone line. The line coming from the box on<br>
> the outside of the house has four wires, red, green, black,<br>
> yellow. The l9ines coming from the different recepticles<br>
> have the same. Bare ends under the house. I cut open a<br>
> phone cord used from the recepticle to the phone it has<br>
> only 2 wires, Re and green. What are black and yellow for?<br>
><br>
> I am using a Barrier strip to connect all the lines to the<br>
> wire coming from the phone companies box. Seems like all I<br>
> need is to connect the red to red and green to green and<br>
> leave the others unconnected.<br>
><br>
> Tom<br>
> _______________________________________________<br>
> colug-432 mailing list<br>
> <a href="mailto:colug-432@colug.net">colug-432@colug.net</a><br>
> <a href="http://lists.colug.net/mailman/listinfo/colug-432" target="_blank">http://lists.colug.net/mailman/listinfo/colug-432</a><br>
_______________________________________________<br>
colug-432 mailing list<br>
<a href="mailto:colug-432@colug.net">colug-432@colug.net</a><br>
<a href="http://lists.colug.net/mailman/listinfo/colug-432" target="_blank">http://lists.colug.net/mailman/listinfo/colug-432</a><br>
</div></div></blockquote></div><br>