Plantronics T20 2-line telephone headset Features: 

Plantronics T20 headset Dual-line telephone system with ergonomically designed, convertible headset. Noise canceling microphone eliminates background noise, adjustable incoming and outgoing volume, tone and mute. Includes a hold button and 3 way conference calling. 

Complete 2 line telephone with headset, Adjustable for over-the head or over-the-ear convenience.

Plantronics T20 2-Line Telephone Headset Features:

• Convertible noise-cancelling headset
• On-line indicator and headset stand included
• Volume and tone control
• Mute with indicator light
• Three-way conference calling
• Flash, redial and hold buttons
• Ringer sound adjustment
• Cable connects to existing telephone jacks

 Price:  $91.95