HEADSET POLARITY SWITCH

Located on the underside of the telephone (see Figure 8), this switch provides compatibility with the two commonly-used headset wiring standards.

Position “V” suits Plantronics Vista Cords and other Headsets wired in the same configuration (also known as “reversed” wiring mode).

Position “P” suits Plantronics P cords and other Headsets wired in the same configuration (also known as “normal” wiring mode).

Please see Table 1 as a guide to the correct settings for most popular Headsets.

RINGER PITCH

CONTROL

RINGER VOLUME

SWITCH

HEADSET POLARITY SWITCH

VOLUME SLIDER

HEADSET MIC ADJUSTMENT CONTROL

HEADSET JACK

MOUNT HOLES FOR

WALL BRACKET

Reversed headset polarity

Normal headset polarity

HANDSET JACK

BATTERY COMPARTMENT (OPTIONAL BATTERIES NOT SUPPLIED)

FIGURE 8 HEADSET MIC ADJUST CONTROL AND POLARITY SWITCH

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Interquartz IQ750 manual Headset Polarity Switch, Headset MIC Adjust Control and Polarity Switch