Filter
Top Products
Mute
Mute allows you to block audio input for your handset and speakerphone, so that you can hear other parties
on the call but they cannot hear you.
Mute Phone
Procedure
Step 1
Press the Mute button to turn mute on.
Step 2
Press the Mute button again to turn mute off.
Plus Dialing
Plus Dialing allows you to press and hold the “*” key for at least 1 second to add a plus “+” sign as the first
digit in a phone number for international dialing. It applies only for off-hook dialing.
Dial international number
Procedure
Step 1
Press and hold the “*” key for at least 1 second.
The + sign is entered as the first digit in the phone number.
The corresponding tone stops to indicate that the * has changed to a + sign.
Step 2
Dial the international number.
Redial
Redial allows you to call the most recently dialed phone number by pressing the Redial button.
Redial Number
Procedure
To redial a number, press the Redial button .
You can be off-hook or on-hook when you press this button.
Cisco Unified SIP Phone 3905 User Guide for Cisco Unified Communications Manager 8.6
20 OL-23424-01
Calling Features
Mute