Yealink SIP-T54S Administrator's Manual page 476

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
1-On
If it is set to 1 (On), incoming calls to the account X are forwarded to the destination
number (configured by the parameter "account.X.always_fwd.target") immediately.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Note: It works only if the value of the parameter "features.fwd.allow" is set to 1 (Enabled)
and value of the parameter "features.fwd_mode" is set to 1 (Custom). It is not applicable to
SIP-T19(P) E2/CP860/CP920 IP phones.
Web User Interface:
Features->Forward&DND->Forward->Account X ->Always Forward->On/Off
Phone User Interface:
Menu->Features->Call Forward->Account X->Always Forward->Always Forward
account.X.always_fwd.target
Description:
Configures the destination number of the always forward for account X.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Note: It works only if the value of the parameter "features.fwd.allow" is set to 1 (Enabled)
and value of the parameter "features.fwd_mode" is set to 1 (Custom). It is not applicable to
SIP-T19(P) E2/CP860/CP920 IP phones.
Example:
account.1.always_fwd.target = 1003
Web User Interface:
Features->Forward&DND->Forward->Account X ->Always Forward->Target
Phone User Interface:
Menu->Features->Call Forward->Account X ->Always Forward->Forward to
account.X.always_fwd.on_code
450
Parameters Permitted Values Default
String within 32
Blank
characters
String within 32
Blank
characters