OLI On Line Indicator Extension Cord. The Plantronics OLI On-Line Indicator Extension Cord is designed to give your Plantronics busy light the extra reach you may need to place the indicator on the outside of your office or cubical. Alert people entering your work space long before they interrupt your telephone call. This will give your Busy Light approx an additional 6 feet of cable.

Plantronics CS50, Plantronics CS55, Plantronics CS10, Plantronics CS351, Plantronics CS361

note: if you don't use the Plantronics HL10 or HL1 lifter, you will need this 3.5mm adapter so your wireless headset based sits flat on your table.