Mute
Muteallows you to block audio input for your handset and speakerphone, so that you can hear other parties
onthe call but they cannot hear you.
Mute Phone
Procedure
Step 1 Pressthe Mute button toturn muteon.
Step 2 Pressthe Mute button again to turnmute off.
Plus DialingPlusDialing allows you to press and hold the “*” key for at least 1 second to add a plus “+” sign as the first
digitin a phone number for international dialing. It applies only for off-hook dialing.
Dial international number
Procedure
Step 1 Pressand holdthe “*”key for atleast 1 second.
The+ sign is enteredas the first digit in the phone number.
Thecorresponding tone stops to indicate that the * has changed to a + sign.
Step 2 Dialthe internationalnumber.
RedialRedialallows you tocall the mostrecently dialed phone numberby pressingthe Redial button.
Redial Number
Procedure
Toredial a number, press the Redial button .
Youcan 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