Avaya 700381817

Direct Connection - A single EU24 is supported on the following phones - Avaya 2420, 5420, 4620SW, 4621SW, 5620SW, 5621SW, and 4625SW
Power Supply - Requires an Avaya 1151 series power supply (sold separately; see drop down option above).
For IP phones, use of PoE is supported if the PoE is Class 3. IP Office supports a maximum of eight EU24's on each IP Office system