Jabra Speak 510
Jabra GN1200, jabra, direct connect cord, connecting cord, phone, headset
Jabra_Pro920_Mono, wireless headset
Jabra Link860, jabra , amplifier, audio processor

Jabra Link 860 Settings

Jabra_Pro920_Mono, wireless headset
Jabra_Pro920_Mono, wireless headset
Jabra Pro9450, Jabra, wireless headset
Plantronics CS500, Plantronics CS540, wireless headset, plantronics

Plantronics CS500 Series Configuration Switch Adjustment

Look at the bottom panel of your base to locate the configuration…