This guide describes the basic features and usage of the Avaya 4620/4620SW/4621SW IP Telephone.
This guide introduces the Avaya 4620, 4620SW, and 4621SW IP telephones, describing hardware features, key functions, and the optional Feature Key Expansion Unit. It explains how to make and receive calls, use speed‑dial, call‑log, and the optional Web Access application, and configure options such as display settings, visual alerts, and backup/restore.
Additional sections cover headset and handset options, answer‑supervision signaling, compliance with safety and FCC regulations, and detailed troubleshooting procedures. Support information, including toll‑fraud hotlines and Avaya’s support website, is also provided.
| Safety Standard | IEC 60950 (3rd Edition) |
|---|---|
| FCC Classification | Class B digital device, Part 15 |
| Answer‑Supervision Signaling | Complies with Part 68 rules |
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