Plantronics H91 Encore Monaural headset

The Plantronics H91 Encore Monaural headset above requires either a connection lead or an amplifer to connect the headset to your phone. This will be dependant on the the type of telephone system and handset you are using. Some telephones do not have an inbuilt amplifier (Amplifier preferable in noisy surroundings e.g. call centers), so an external amplifier is needed (A connection lead is not needed when you use an Amplifier). Below is a list of the major telephones/telephone systems and the connection lead/amplifier you need to connect the Plantronics H91 Encore Monaural headset to your phone.