Yealink SIP-T42G - Manual (Page 105)

Basic Call Features
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You can use anonymous call to block the identity and phone number from showing up to
the called party when you call someone. For example, you want to call to consult some
services, but don’t want to be harassed. Anonymous call is configurable on a per-line
basis. You can also configure the phone to send anonymous on/off code to the server to
activate/deactivate anonymous call on the server side.
Note
To configure anonymous call via phone user interface:
1. Press Menu->Features->Anonymous Call.
2. Press or , or the Switch soft key to select the desired line from the Line ID
field.
3. Press or , or the Switch soft key to select Enable from the Send Anonymous
field.
4. (Optional.) Press or , or the Switch soft key to select the desired value from
the Anonymous Code field.
5. (Optional.) Enter the anonymous call on code in the Call On Code field.
6. (Optional.) Enter the anonymous call off code in the Call Off Code field.
7. Press the Save soft key to accept the change or the Back soft key to cancel.
Anonymous call is configurable via web user interface at the path Account->Basic.
To place an anonymous call:
1. Using the specific line on the phone to place a call to phone B.
The LCD screen of phone B prompts an incoming call from anonymity.
Anonymous call is not available on all servers. Contact your system administrator for the
anonymous call on code and off code.