Configuring privacy and security features, Blocking caller id, Step 1 press the setup button – Cisco Cisco Small Business Pro IP Phones SPA 525G User Manual
Page 63: Step 2 scroll to user preferences and press select, Step 3 select call preferences, Step 5 press save, Blocking anonymous calls

Using Advanced Phone Features
Configuring Privacy and Security Features
Cisco Small Business Pro IP Phone SPA 525G (SIP) User Guide
60
4
Configuring Privacy and Security Features
You can also configure these features using your PC and the IP Phone Web
Interface. See
“Blocking Caller ID,” on page 85
and the
.
Blocking Caller ID
You can block Caller ID from your phone so that your phone number will not
appear to the person you call.
To block Caller ID:
STEP 1
Press the Setup button.
STEP 2
Scroll to User Preferences and press Select.
STEP 3
Select Call Preferences.
STEP 4
Scroll to Block Caller ID and press the Right Arrow key to choose On.
STEP 5
Press Save.
Blocking Anonymous Calls
Blocking anonymous calls prevents calls with unknown Caller ID from ringing your
phone. (For example, if a caller set his phone to not display Caller ID, the call is
considered anonymous.) These callers receive a busy signal or message when
calling your phone if anonymous calls are blocked.
To block anonymous calls:
STEP 1
Press the Setup button.
STEP 2
Scroll to User Preferences and press Select.
STEP 3
Select Call Preferences.