IDEAL 4 - Switches and Indicators; TLK-RING-MON Switch; P;T - Pulse;Tone Switch; Leds - Polarity Indicator

The enclosure is made of impact-resistant polycarbonate designed to
withstand the rough conditions and shocks associated with craft use.
The back of the testset is equipped with a non-slip pad, to enable testing
while the testset rests on your shoulder.
The recessed keypad design protects the keypad from damage and minimizes
accidental button contact.
A belt clip provides convenient connection to installer’s belts.
The testsets may be used with several types of cordsets. See the CORDSET
section for details.
SWITCHES AND INDICATORS
See drawing on page 3.
TLK-RING-MON Switch
Located below the receiver, this 3-position switch is used to select the mode
of operation.
TLK (Talk)
This position connects the testset to the line for network signaling,
conversation, and testing. The TLK position creates an off-hook condition
such as that found with a regular telephone set.
RING
This position connects the internal electronic ringer to the line in order
to receive incoming ring signals. The RING position creates an on-hook
condition, with the speech and test circuits isolated from the line.
MON - Monitor
This position connects the testset to the line through a high impedance
circuit, allowing monitoring of the line without disturbing conversations,
data transmission, or network signaling. The MON position creates an
on-hook condition, with the speech, test circuits, and ring circuit isolated
from the line.
P/T - Pulse/Tone Switch
Located below the receiver, this 2-position switch is used to select the
dialing mode.
The PULSE position selects rotary style dial pulse signaling.
The TONE position selects DTMF signaling.
LEDs - Polarity Indicator
The testsets employ 2 LEDs (one green and one red) to indicate line
polarity. The polarity indicator LEDs are located above the keypad.
Please see OPERATION section for details.
Keypad
There are 12 standard network addressing keys, and 4 control keys to
enable special functions.
The 12 standard keys are used in signaling and for entering digits for network
addressing.
For all models the control keys cause the following functions to be performed:
R - REDIAL key - When pressed, the last number dialed will be redialed
from the internal memory. Please see OPERATION section for details.
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