Use the following figure to connect the phone to the network.
DC adapter port (DC 4.2V).
Network port (10/100 SW) connection. IEEE 802.3af power
AC-to-DC power supply (optional).
Access port (10/100 PC) connection.
AC power wall connection.
Buttons and Hardware
Shows information about your phone such as directory number,
active call, and phone menu listings.
Indicates an incoming call (flashing red) or new voice
message (steady red).
Navigation bar and Select/Feature button
The Navigation bar allows you to scroll through menus and
highlight items. The Select button (in the middle of the Navigation bar) allows
you to select a highlighted item.
When the phone is off-hook, the Select button functions as
the Feature button. You can access these features:
All: Allows you to forward a call.
Mail: Allows you access voice mails.
Pickup: Allows you to answer a call that is ringing on a co-worker's phone.
Pickup: Allows you to answer a call that is ringing in another call group.
Opens or closes the Applications menu. Use it to access call
history, user preferences, phone settings, and phone model information.
Transfers a call.
Places an active call on hold or resumes a held call.
Allows you to dial phone numbers.
Selects the speakerphone as the default audio path and
initiates a new call, picks up an incoming call, or ends a call. The
speakerphone audio path does not change until a new default audio path is
selected (for example, by picking up the handset).
Controls the handset and speakerphone volume (off-hook) and
the ringer volume (on hook).
Toggles the microphone on or off.
Dials the last dialed number.
Returns to the previous screen or menu.
The following table highlights some of the important
differences in terminology that is used in these documents:
Cisco Unified SIP Phone 3905 User Guide for Cisco Unified Communications Manager