Yealink SIP-T2 SERIES Administrator's Manual page 1015

DSS key can be assigned with various key features. The parameters of the DSS key are detailed
in the following:
Parameter
linekey.X.type
Parameter
programablekey.X.type
Parameter
expansion_module.X.key.Y.type
Description
Configuration File
<y0000000000xx>.cfg
Configures key feature for the DSS key.
For line keys (not applicable to SIP-T19(P) E2 IP
phones and CP860 IP phones):
X ranges from 1 to 29 (for SIP VP-T49G/SIP-T48G)
X ranges from 1 to 27 (for SIP-T46G/T29G)
X ranges from 1 to 15 (for SIP-T42G/T41P)
X ranges from 1 to 21 (for SIP-T27P)
X ranges from 1 to 3 (for SIP-T40P/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
For programable keys:
X=1-4, 12-14 (for SIP VP-T49G)
X=1-10, 12-14 (for SIP-T48G/T46G)
X=1-10, 13 (for SIP-T42G/T41P/T40P)
X=1-14 (for SIP-T29G/T27P)
X=1-10, 14 (for SIP-T23P/T23G/T21(P) E2)
X=1-9, 13, 14 (for SIP-T19(P) E2)
X=1-6, 9, 13 (for CP860)
For ext keys (only applicable to
SIP-T48G/T46G/T29G/T27P IP phones):
X ranges from 1 to 6, Y ranges from 1 to 20, 22 to 40
(Ext key 21 cannot be configured).
For line keys:
Valid types are:
0-N/A
1-Conference
2-Forward
Appendix
991