Yealink SIP-T46G User Manual page 61

desired value from the Send Rejection Code field.
The phone will send the configured on code or off code depending on your selection when you
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enable or disable anonymous call rejection feature on the phone.
6. (Optional.) Enter the anonymous call rejection on code and off code
respectively in the Reject On Code and Reject Off Code field.
7. Press the Save soft key to accept the change or the Back soft key to cancel.
Anonymous call rejection is configurable via web user interface at the path Account->Basic.
User Guide for SIP-T46G IP Phone
61