G L O S S A R Y
contact positions. Line connectors are
wider and have six positions (often, only
two or four positions are loaded with
contacts).
OFF-HOOK - If equipment is “off-hook”,
it is not idle but actively connected to the
telephone line.
ON-HOOK - Another old term that gets
its meaning from your telephone handset
resting on the hook switch. If equipment
is “On-hook”, it is idle and not using the
telephone line.
OPX (OFF PREMISE EXTENSION) -
Like a party line, an OPX is a line that
serves more than one subscriber
location. Examples of OPXs are off-
premise answering services, and lines
that serve more than one building. Your
ATX-250 will not operate fully if attached
on a line with an OPX.
PARTY LINE - A line that serves more
than one subscriber or user. Your ATX-
250 cannot be properly operated on a
party line system.
POLARITY - A term used to describe
the order of two electrical points - one
positive and the other negative. On an
RJ-11 female jack, the green lead should
be positive with respect to the red lead to
ensure proper operation with all
equipment.
RJ-11 WIRING STANDARD - A specific
wiring arrangement for using a g-position
modular connector to attach exactly one
telephone line. The two wires of the
telephone line are attached to the two
center contacts of an RJ-11 modular jack
(the wires are often color-coded red and
green). All connections to your ATX-250
must be wired according to this RJ-11
standard.
RJ-14 WIRING STANDARD - Utilizes a
six position modular connector wired to
two separate telephone lines. This
application is used almost exclusively on
dual line telephones. Line 1 is attached to
the center two contacts (like RJ-ll), and
Line 2 is attached to the next outer two
contacts (often color-coded yellow and
black).
ROLL-OVER - A service provided by
most phone companies that allows
several lines to be tied together. A single
number is generally dialed by all callers.
If that line is busy, the phone company
will “roll-over” the call to another line in
that group. Also called “hunt-group” or
“rotary”.
ROTARY - An ambiguous term. “Rotary
Group” means a roll-over group, and
“Rotary Dialing” means pulse dialing.
STATION - A telephone set attached to a
multi-line Key system or PBX. Your ATX-
250 will work on a PBX station extension,
but WILL NOT work on a Key system
station extension.
TIP AND RING - An archaic term that
gets its meaning from the old switchboard
plugs. Each plug had a tip connector and
a ring connector. Now, tip and ring refer
to the two conductors that make up a
single telephone line.
TRUNK - A line that connects to the
telephone company CO (central off ice).
VERSA-LINK ATX-250
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