Phones

7401 Plus	Features 5 fixed feature buttons (conference, transfer, drop, hold) 7 programmable feature buttons (auto dial, send all calls) A Message waiting light Personalized ringing Desk/wall mountable
7406 Plus	Features 2 way speaker phone for conferencing and listening 5 call appearance buttons 8 buttons for transfer, drop, hold conference, etc. A Message waiting light Controlled volume, mute, and personalized ringing 18 programmable feature buttons
7407	Features Speakerphone 8 feature buttons, such as transfer, conference, drop, hold, etc. 10 call appearance buttons 22 programmable feature buttons without LED's 9 with LED's A jack for an additional speakerphone or headset
7444	Features Feature buttons include, transfer, hold, conference, drop and select ring Speed dialing, call forwarding and privacy Speakerphone Jack for additional speakerphone or headset
Callmaster	Features 6 call Appearance/Feature Buttons 15 Exclusive Feature Buttons 2-Line Display 2 Headset Jacks Other buttons include: Drop/Test, Conference/Ring, Hold, Transfer, Release, Log in, Mute, Volume Control

Accessories

Cordless	Features Voice scramble function for secure conversation Remote control handset lifter Volume control Mute key Hearing aid compatible Up to 5 hours of continuous talk time with 2.5 days of standby "Base Battery" backup and charging system Visual LED indications Any key answer Belt Clip
Headset	Features Light weight Adjustable Headband Quick Disconnect Clothing Clip Tone Control Noise-Cancelling Microphone

Conference Phones

Polycom

Features Integrated keypad with mute, and flash to access features such as Hold, Transfer, and Conference 360-degree room coverage Dual-color LEDs to indicate on or mute status