Yealink SIP-T2XP Administrator's Manual page 177

Configuring Basic Features
Parameters Permitted Values Default
X ranges from 1 to 3 (for SIP-T26P/T22P).
X ranges from 1 to 2 (for SIP-T20P).
Web User Interface:
Account->Basic->Local Anonymous
Phone User Interface:
Menu->Features->Anonymous Call->Local Anonymous
account.X.send_anonymous_code 0 or 1 0
Description:
Configures the IP phone to send anonymous on/off code to activate/deactivate the
server-side anonymous call feature for account X.
0-Off Code
1-On Code
If it is set to 0 (Off Code), the IP phone will send anonymous off code to deactivate
the server-side anonymous call feature.
If it is set to 1 (On Code), the IP phone will send anonymous on code to activate
the server-side anonymous call feature.
X ranges from 1 to 6 (for SIP-T28P).
X ranges from 1 to 3 (for SIP-T26P/T22P).
X ranges from 1 to 2 (for SIP-T20P).
Web User Interface:
Account->Basic->Send Anonymous Code
Phone User Interface:
Menu->Features->Anonymous Call->Send Anony Code
account.X.anonymous_call_oncode String within 32 characters Blank
Description:
Configures the anonymous call on code to activate the server-side anonymous call
feature for account X.
X ranges from 1 to 6 (for SIP-T28P).
X ranges from 1 to 3 (for SIP-T26P/T22P).
X ranges from 1 to 2 (for SIP-T20P).
Example:
account.1.anonymous_call_oncode = *71
Note: It works only if the parameter "account.X.send_anonymous_code" is set to 1
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