Call Center headset telephone amplifier adaptor for Multiple Line Phone 12 Combinations for Compatibility of Almost Phone Syste

Call Center headset telephone Amplifier / adaptor for Multiple Line Phone system: 

Specifications:

Easy to Install

Simple & Compact Design

Select Switch(in the Selector Cover

Handset/Headset Switch Button

Mute & On/Off Button

Compatible with Most Telephone System Including P.B.X