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5400 Series Telephones

5420 Digital Telephone

The Avaya 5420 Digital Telephone provides a large-scale display for easy viewing and call control with 24 call appearance/feature buttons.

5410 Digital Telephone

The Avaya 5410 digital phone works with Avaya IP Office systems.

5402 Digital Telephone

The Avaya 5402 digital phone is a cost effective two-wire digital telephone that complements the Avaya 5410 and 5420 digital telephones for use with Avaya IP Office.

EU24 Expansion Module

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.