Entry-Level Phone
- Fixed feature keys that provide one-touch access to redial, transfer, conference, hold, line select, mute, speakerphone, and voicemail access features
- A display that supports additional capabilities such as caller ID, call history, and phone configuration
- Choice of IEEE 802.3af Power over Ethernet (PoE) or local power through an optional power adaptor
Data Sheets and Literature

Data Sheets

(All Cisco Unified SIP Phone 3900 Series Data Sheets)

End-of-Life and End-of-Sale Notices

(All Cisco Unified SIP Phone 3900 Series End-of-Life and End-of-Sale Notices)

Q&A

(All Cisco Unified SIP Phone 3900 Series Q&A)

White Papers

(All Cisco Unified SIP Phone 3900 Series White Papers)

(All Cisco Unified SIP Phone 3900 Series Data Sheets)
End-of-Life and End-of-Sale Notices
(All Cisco Unified SIP Phone 3900 Series End-of-Life and End-of-Sale Notices)
Q&A
(All Cisco Unified SIP Phone 3900 Series Q&A)
White Papers
(All Cisco Unified SIP Phone 3900 Series White Papers)