AASTRA 600d for Aastra 800 and OpenCom 100 User Guide EN - Manual (Page 38)

Functions
36
middle sidekey
(620d, 630d
only) short stand-by, call calls the programmed function
long stand-by programming with the desired
function
call increases volume – if key is pro-
grammed (save via
)
lower sidekey
(620d, 630d
only) short stand-by, call calls the programmed function
or during call – if the key is not
programmed – decreases vol-
ume
long stand-by programming with the desired
function
call decreases volume – if key is
programmed (save via
)
sidekey
(610d only)
short call decreases volume (for current
call only/save with Ok)
Key Duration
(key press)
… State Description