HorneTD wrote:
Art Todesco wrote:



William W. Plummer wrote:

Steph in PA wrote:

Hi, I have two problems:

1) I bought one of those telephone line testers made by GB
Instruments for $5. I plugged it in, and it came out as "red", which
means "reversed line". What does this mean?

I checked at the NID (the part inside the house), and only a red and
green line are connected there, with the yellow and black not
connected and being wrapped around the green and red; but my phone
works fine.

BTW, I'm furious that the yellow and black wires are not connected,
since I am getting a second phone line in the next few months. Why
would someone install the phone line this way? Is this normally how
the pros do it?

2) My other telephone jack in the house is testing as "dead", since
no light lights up on the tester. I checked at the NID in the house
again, and the red and green wires are connected there. I traced the
line about half way, in the basement, and it appeared to be ok. The
other half was inaccessible, since the landlord has about 1-2 feet
of books, newspapers, magazines, etc. piled on the entire floor,
which is blocking my access to the part of the basement where the
line runs.

Does anyone know why my phone jack is reading dead? I haven't check
the actual jack yet.




Black and Yellow are to be used for a second line. You can purchase
line splitters.

Polarity reversal is how the determine whether you have a pulse
dialing system or a tone dialing.


Wrong! You can pulse dial or touch tone on any line. The receiver in
the central office
takes either. The telephone central office can, via software, not
allow touch tones for those
who don't pay the extra fee although I think today, it's mostly
included. But, if you can
touch tone dial on a line, you most certainly can dial pulse. Dial
pulsing simply opens the
loop a number of times as the dial returns (9 pulses for a number 9,
etc.). Most modern
telephone sets can work with the polarity reversed on a single party
line. Older sets will
work (it will ring, you can talk), but the touch tone dial won't put
out tones when you press
a button.


Sorry Art but you are the one that is wrong. When touch tone dialing
was first provided on subscriber lines polarity was how the use of TT
was limited to those who paid for it. The old 500 desk sets and similar
phones of that error had polarity specific touch pads. The polarity of
the line was reversed at the protector to prevent the use of touch tone
telephones on lines that had not paid the fee. Many residential
premises have reversed polarity on the internal wiring as a legacy of
that original practice.
--
Tom H
Tom, you may be right for some electromechanical
offices, however, ever since the
1ESS system (AT&T-Western Electric) came out in
the mid 60s, it was a software
controlled add on feature. But, even in the
electromechanical offices, step by step and
crossbar No.1 and No. 5, there were line groups
that could or could not access
touch tone receivers. I don't know about non
"Bell" offices.