The Avaya 2410 digital phone has a 5 x 29 character display with 12 label-less call appearances (in two screens),full-duplex speakerphone, 14 fixed feature keys, four softkeys, 12 shifted feature butt
The 2402 has a 2-line x 24-character display with two label-less call appearances, a Listen-Only Speaker, 10 Fixed Feature Keys: Conference, Transfer, Drop, Redial, Speaker, Message, Hold, Mute, Volum
Avaya EU24 is an add-on expansion module that works in association with Avaya 2420, Avaya 4620, Avaya 4621, Avaya 4625, Avaya 5420, Avaya 5620 and Avaya 5621 telephones.
