NOT FOR Headset for CISCO phones. Headset and Handset switch option
8-position configurations: Switch Headset pin configuration adaptor enabling your RJ9 headset to work with more telephones.
TWO Mute Switch for Microphone Separately
Make sure try each of the 8 channels until you find the one where you can hear the other side, and the other side can hear you .
A must have for busy call centres 4P4C and RJ10 are also known as RJ9 and RJ22.

Technical Details

Product Details

Package Dimensions
Width : 3.5 inch
Height : 1.3 inch
Length : 4.4 inch

Shipping Weight: 1.92 ounce (View shipping rates and policies)

ASIN : B07317NRD6