ZPM3 is a telephone-compatible zone paging module with all-call and talk back capabilities serving up to three one- or two-way paging zones. The ZPM3 can also be used in a paging system independent of a telephone system. The ZPM3 works with self-amplified or central-amplified paging systems. A background music source can be connected directly to the ZPM3, or to a separate amplifier that can be used to supply background music to all unpaged zones. Built-in DIP switches are used to select the field-programming mode, enable/disable the pre-announce and confirmation tones, and set the paging mode (one-way or talk back) of each zone. Field-programming is used to assign individual zones to the paging zone groups, night ringer zone group, and shift change/emergency-call zone group*. Field-programming is also used to enable/disable the privacy beep for two-way zones, select the shift change/emergency-call tone, and inhibit all-call operation. A control is included to adjust the volume of the preannounce, confirmation, and shift change/emergency-call tones. Separate controls are provided to adjust the night ringer tone and background music volume. All volume controls are screwdriver-adjustable.