10
Other Features
FLASH
Flash
Press FLASH to generate a timed line break.
SPKR
Speaker
The speaker allows two different modes: one-way hands-free operation and two-way hands-
free operation.
• When in the Talk mode, press SPKR to communicate in the two-way hands-free mode.
• When in the Talk mode, press MUTE, then press SPKR. This puts the test set in the one-way
(receive-only) hands-free mode.
• When the test set is off, press and release SPKR to select Monitor mode with loudspeaker.
Press again to select Monitor mode without loudspeaker.
VOL
Volume Control
To control the speaker volume, press VOL. The speaker is set to automatically start out at the
low setting. Press VOL to toggle between high and low volume.
Note: When using the high volume setting, the dial tone may fade. This does not indicate a
fault or a problem, and you may still dial out.
POL
Polarity
To determine the polarity, press POL. The LED will indicate polarity as follows:
▼
Red wire connected to ring (negative)
LED: Steady green
▼
Red wire connected to tip (positive)
LED: Steady red
Pressing POL while ringing will cause the LED to alternate between green and red.
