`- Plantronics Vista M22 universal modular adapter
- Replacement for the PL-M12
- Enhanced features over the M12
- Modular jack plugs into phone
- For use with any Plantronic quick disconnect headset
- Operates on 2 AA batteries (included) or AC adapter(not included)
- Manual scroll volume control
- Headset on/off switch (switches between headset and telephone handset)
- Mute button
- ClearLine Audio technology
Enhanced Features over M12
- Wideband audio (totally compatible with existing systems and "wideband ready" to deliver superior audio on integrated wideband (VoIP) systems)
- Protection from loud noises (delivers greater protection against sudden loud noises by quickly reducing them to comfortable levels)
- Phone line noise reduction (filters incoming and outgoing phone line noises, such as high-frequency hissing, making conversations clear, less fatiguing and more comfortable)
- Call volume equalizer (equalizes the level of all calls to the same comfortable, user-preferred listening level)
- Echo management (eliminates echo problems introduced by latency inIP networks; so even if your new IP phones do notrequire an Amp your conversations may still benefit from the use of one)
- Black

ADDITIONAL/REPLACEMENT PARTS:
PL-ADAPTER (PL-26503-01): AC adapter
PL-40696-01: amplifier security device (attaches amplifier to desk)
PL-26609-02: slide switch door and battery door
PL-40974-01: amplifier to telephone coil cable
PL-40715-01: custom cradle mate
PL-26716-01: amplifier to QD coil cable
PL-17521-01: velcro attachment kit