Yealink SIP-T54S Administrator's Manual page 316

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Call State
SemiAttendTrans(
(Transfer
Connecting)
Dialing (not applicable to SIP-
T48G/S IP phones)
RingBack
RingBack
SemiAttendTrans
Back(Transfer
Ring Back)
Talk(On Talk)
Talking
Hold
290
Default Soft Keys
End Call
Transfer
Empty
Empty
End Call
Send
IME
Delete
End Call
Empty
Empty
Empty
End Call
Transfer
Empty
Empty
End Call
Transfer
Hold
Conference
End Call
Transfer
Resume
Optional Soft Keys
Empty
Switch
Empty
History
Switch
Line
Favorite (Directory)
GPickup
DPickup
Retrieve
Empty
Switch
Empty
Switch
Empty
Mute
SWAP
NewCall
Switch
Answer
Reject
PriHold
Park
GPark
RTP Status
Empty
Switch