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G L O S S A R Y
300, all FAX machines and single-line phones,
and most MODEMS are loop start equipment.
GROUND START - A line or equipment that
establishes a dial tone by completing a circuit
between one of the wires of the line and earth
ground. Ground start circuits are used mainly
for PBX applications. Loop start equipment
will not operate if connected directly to a
ground start line.
PARTY LINE - A line that serves more than
one subscriber or user. Your ATX-300 cannot
be properly operated on a party line system.
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-300 will not operate fully if attached
on a line with an OPX.
STATION - A telephone set attached to a
multi-line Key system or PBX. Your ATX-300
will work on a PBX station extension, but WILL
NOT work on a Key system station extension.
EXTENSION - A catch-all term that describes
additional phones attached to a single line (as
in a residence or small office) or a station of a
Key system or PBX.
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.
CALL WAITING - A feature provided by many
telephone companies that allows two calls to
be managed at the same time on one line.
Your ATX-300 will work fine with “Call
Waiting”, but your FAX or MODEM probably
won’t Call Waiting is not recommended for
lines used for data transfer.
TECHNICAL SPECIFICATIONS
Input power requirements:
At AC Transformer: 110-125 Volts AC Only
50-60 Hz
At power jack on ATX-300: 12-15 Volts AC only
Power consumption Idle: 4.2 Watts
Ringing a device: 6-11 Watts
CO Interface: REN 1.1 B
DOC (Canada) Load No. 22.6
Input ring detection: 40-150 Volts AC, 15-68 Hz
DEVICE Interface:
Battery: Nominal -48 Volt DC to devices
1, 2, and 3
Off-hook detection: 3-150 ma
Ringer frequency: 27 Hz Pseudo-sine wave
Ringing no load: Approximately 110 Volts AC
Ringing 8000 ohm impedance
(REN 1 .O): Approximately 93 VAC
Ringing 4000 ohm impedance
(REN 2.0): Approximately 74 VAC
Ringing 2667 ohm impedance
(REN 3.0): Approximately 64 VAC
Ringing short circuit: current limited to 50 ma
(impedances less than 2667 ohms not
recommended)
VERSA-LINK ATX-300
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