Yealink SIP-T54S Administrator's Manual page 1048

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Format
Default Value
1022
"ldap.enable" is set to 1)
39-BLF List
40-Prefix
41-Zero Touch
42-ACD
45-Local Group
50-Phone Lock
56-Retrieve Park
61-Directory
66-Paging List
73-Custom Key (only appear when the parameter
"features.enhanced_dss_keys.enable" is set to 1)
Integer
For line keys:
For SIP-T48G/S IP phones:
The default value of the line key 1-16 is 15, and the
default value of the line key 17-29 is 0.
For SIP-T54S/T46G/T46S/T29G IP phones:
The default value of the line key 1-16 is 15, and the
default value of the line key 17-27 is 0.
For SIP-T52S IP phones:
The default value of the line key 1-12 is 15, and the
default value of the line key 13-21 is 0.
For SIP-T42G/S IP phones:
The default value of the line key 1-12 is 15, and the
default value of the line key 13-15 is 0.
For SIP-T41P/S IP phones:
The default value of the line key 1-6 is 15, and the
default value of the line key 7-15 is 0.
For SIP-T27P/G IP phones:
The default value of the line key 1-6 is 15, and the
default value of the line key 7-21 is 0.
For SIP-T40P/T40G/T23P/T23G/T21(P) E2 IP
phones:
The default value is 15.
For programable keys:
For SIP-T54S/T48G/T48S/T46G/T46S IP phones:
When X=1, the default value is 28 (History).