Brand: Cisco
Category: Telephony
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for 3905
Uploaded: Nov. 21, 2025, 7:34 p.m.
Manual Publish Date: 2020-08-27
Warranty Information
Provides Cisco One-Year Limited Hardware Warranty Terms and links to the formal warranty statement.
Getting Started: Learn about accessibility features, connecting the phone, buttons and hardware, the phone screen, footstand, cleaning the screen, and adjusting the handset rest. Includes important headset safety information.
Basic Operations: Make calls using redial or international dialing. Answer calls via hookflash or pickup. Respond to call waiting. Manage calls through forwarding and transfer. Hold and mute calls. Set up and manage conferences. View phone information and sign into the Self Care Portal.
Call History: View and dial from call history.
Voicemail: Overview, personalization, checking and listening to messages.
Advanced Operations: Auto Answer, Auto Barge, and Shared Lines functionality.
User Preferences: Change ringtone and line settings.
Product Safety and Security: Compliance statements for European Union and Canada, FCC compliance, and product security overview. Important online information including EULA and RCSI.
Warranty: Cisco One-Year Limited Hardware Warranty Terms.