Avaya 4620SW IP Phone Modules The Adtran 1200309E1 can be

The Adtran 1200309E1 can be configured to map each port to a DS0 channel or dynamically switched based on a dial plan

The 48 Key H DFP BL features a backlit display

Uses Ink Ribbons

Samsung KP100DM2B/XAR Features:

Two of the T1 interfaces can be configured for DSX-1 applications as needed

Avaya 4620SW IP Phone Modules The Adtran 1200309E1 can beAvaya 4620SW Phone Description: The Avaya 4620SW is a powerful phone, great for those executives and people with a high call volume. The 4620SW has 24 programmable buttons, although only twelve buttons are visible, you use the page left and page right buttons for added functionality. The large display makes it much easier to read incoming calls and navigate through your phone's functions, whether you're adding a contact or updating a line appearance.