User guide

Toggles back to the previous setting.Previous button6
Places an active call on hold.Hold button7
Transfers active calls to another extension.Transfer button8
Dials the last dialed number.Redial button9
Allows you to dial phone numbers and enter numbers or letters.Keypad10
Selects the speakerphone. When the speakerphone is on, the button is lit.Speakerphone
button
11
Controls the handset and speakerphone volume (off-hook) and the ringer volume
(on-hook).
Volume button12
Mutes the speakerphone and handset. If the button is lit, the speaker and handset
are muted.
Mute button13
Phone Connections
For your phone to work, it must be connected to the corporate IP telephony network. Your system administrator
can help you connect your phone.
Cisco Unified IP Phone 3905 User Guide for Cisco Unified Communications Manager Express Version 8.8 (SIP)
OL-24411-01 3
Overview
Phone Connections