Cisco 509G - Manual (Page 58)

Using Advanced Phone Features
Configuring Privacy and Security Features
Cisco Small Business Pro IP Phone SPA50X User Guide (SIP) 51
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Using the Setup button:
STEP 1 Press the Setup button.
STEP 2 Select Preferences.
STEP 3 Choose Block Anonymous Call and press edit.
STEP 4 Press y/n to choose yes.
STEP 5 Press ok.
STEP 6 Press save.
Using the star code:
Press *77. Anonymous call rejection will be enabled until you enter *87.
Using Secure Call
With the secure call feature, the active call is encrypted so that others cannot
eavesdrop. Before enabling Secure Call, ask your service provider if Secure Call is
available.
Using the Setup button (not applicable to SPA501G):
STEP 1 Press the Setup button.
STEP 2 Select Preferences.
STEP 3 Choose Secure Call and press edit.
STEP 4 Press y/n to choose yes.
STEP 5 Press ok.
STEP 6 Press save. When you dial, you will hear a tone before the call.
Using star codes:
• *16—Activate Secure Call feature for all calls.
• *18—Activate Secure Call feature for a single call.