Yealink SIP-T48G Administrator's Manual page 364

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Parameters
When X=8, the default value is 0 (NA).
When X=9, the default value is 33 (Status).
When X=10, the default value is 0 (NA).
When X=14, the default value is 2 (Forward).
For SIP-T19(P) E2 IP phones:
When X=1, the default value is 28 (History).
When X=2, the default value is 61 (Directory).
When X=3, the default value is 5 (DND).
When X=4, the default value is 30 (Menu).
When X=5, the default value is 28 (History).
When X=6, the default value is 61 (Directory).
When X=7, the default value is 0 (NA).
When X=8, the default value is 0 (NA).
When X=9, the default value is 33 (Status).
When X=13, the default value is 0 (NA).
When X=14, the default value is 2 (Forward).
For CP860 IP phones:
When X=1, the default value is 28 (History).
When X=2, the default value is 61 (Directory).
When X=3, the default value is 5 (DND).
When X=4, the default value is 30 (Menu).
When X=5, the default value is 28 (History).
When X=6, the default value is 61 (Directory).
When X=9, the default value is 33 (Status).
When X=13, the default value is 0 (NA).
For ext keys:
When Y=1, the default value is 37 (Switch).
When Y= 2 to 20, 22 to 40, the default value is 0 (NA).
Web User Interface:
DSSKey->Line Key/Programable Key->Type
Phone User Interface:
Menu->Features->DSS Keys->Line Key X->Type
linekey.X.line/
programablekey.X.line/
expansion_module.X.key.Y.line
344
Permitted Values
Refer to the following
content
Default
1-16 for lines 1-16, 1
for programable key