Cisco 7821 User Manual

Step 4 Select On if you want to block the call that does not have caller information, or select Off to allow the call.
Step 5 Press Set to save the setting.
Block Caller ID
You can block your caller identification to prevent your name and phone number from being displayed on
the receiver's screen when you make a call. This feature helps you to maintain privacy.
Before you begin
Your administrator enables Block CID feature on your phone.
Your administrator enables Block CID feature on the XSI BroadWorks server.
Procedure
Step 1 Press Applications .
Step 2 Select User preferences > Call preferences.
Step 3 Select Block caller ID.
Step 4 Press Select to toggle caller ID blocking on or off.
If your administrator enables the block caller ID feature on the XSI BroadWorks server, your phone retrieves
the value from the server and you see the value that your administrator sets on the server. You can then modify
the value from the Block caller ID menu on the phone.
Step 5 Press Set to save the change.
Secure a Call
You can encrypt calls to protect them from eavesdroppers. You can set up the secure call feature on all
outbound calls or for a specific call.
Procedure
Step 1 Press Applications .
Step 2 Select User preferences > Call preferences > Secure call.
Step 3 Select On to enable secure call feature or select Off to disable the secure call feature.
Step 4 Press Set to save the setting.
Cisco IP Phone 7800 Series Multiplatform Phones User Guide
98
Settings
Block Caller ID

Cisco 7821 Specifications

General

Resolution	396 x 162 pixels
Lines	2
Speakerphone	Yes
Display	3.5-inch (89 mm) monochrome display
Ethernet Ports	2 x 10/100 Ethernet ports
Power	IEEE PoE Class 1
Headset Port	Yes
Protocols	SIP
Audio Codecs	G.711, G.722, G.729, iLBC
Weight	0.9 kg (1.98 lb)