The Avaya EU24 Expansion Module (700381817) can be used with the Avaya 2420, 4620, 5420 and 5620 Phones.
- 24 Programmable Call Appearance/Feature Keys
- Automatically Labeled from System (No Paper Labels)
- Connects Directly to Associated Phone
- For Avaya 2420, 4625, and 5420 Phones
- Only One Unit can be Attached to a Phone
- Separate Power Supply Required