Yealink SIP-T54S Administrator's Manual page 1043

Phone
Model
SIP-T19(P)
X
E2
7 Left
8 Right
9 OK
10
11
12
13 MUTE
14 TRAN
For SIP-T23P/T23G/T21(P) E2 IP phones, Cancel key can be configured only when the parameter
Note
"features.keep_mute.enable" is set to 0 (Disabled).
For SIP-
T54S/T52S/T48G/T48S/T46G/T46S/T42G/T42S/T41P/T41S/T40P/T40G/T29G/T27P/T27G/T19(P)
E2/CP860/CP920 IP phones, Mute key can be configured only when the parameter
"features.keep_mute.enable" is set to 0 (Disabled).
SIP-T23P/ SIP-T52S/T42G/
SIP-T29G/
T23G/ T42S/T41P/
T27P/T27G
T21(P) E2 T41S/T40P/T40G
Left Left
Right Right
OK OK
Cancel Cancel Cancel
CONF
HOLD
MUTE
TRAN TRAN
SIP-
T54S/T48G/T48
CP860/CP
S/T46G/
T46S
Left Left
Right Right
OK OK
Cancel
HOLD
MUTE MUTE
TRAN
920
OK
Mute
Appendix
1017