Welcome
Thank you for selecting the VistaPlus® (DM15™) Adapter from Plantronics. VistaPlus is a headset adapter that incorporates SoundGuard™ Digital technology that is designed to offer increased protection against sudden loud sounds and daily noise exposure for headset users.
VistaPlus is compatible with most business telephones and includes standard adapter functions including headset/handset switch, microphone mute and receive volume adjustment.
SoundGuard DIGITAL provides two distinct types of protection. Firstly, it monitors and predicts the daily personal noise exposure, and adaptively limits the maximum volume to ensure the action levels specified by current and imminent EU legislation are not exceeded.
Constantly on guard, it also identifies and eliminates sudden loud sounds. Network interference, a fax machine tone, or even a whistle blown by a malicious caller are all instantly reduced to a level similar to background noise.
Connecting the adapter
It is important for correct and safe operation of the DM15 that it be installed in the proper port of your telephone. Follow these instructions carefully.
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1On the DM15, locate the free end of the stub cable already plugged into the port with the telephone symbol.
2Follow the curly cord of your handset to the port where it plugs into your phone. Remove the curly cord plug from your phone and replace it with the free end of the Short Cord.
3Plug the curly cord of your handset into the port with the handset symbol on the DM15.
4Connect the AC/DC Power Adapter to the DM15 Adapter and plug into your power source.
5Plug your headset (not supplied) into the Quick Disconnect™ cord from the DM15 Adapter.
Adjusting the adapter
The compatibility switch on the bottom of the adapter allows VistaPlus to operate with most business telephones. This switch is set to position A, but if you cannot hear a dial tone move the switch to one of the other positions
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