Here's what I'm thinking of changing the buttons to on all phones. (Compare with what I posted above previously.)
Main reasons for change is to allow more inbounds to ring. Also, removed the RP buttons. Don't want someone accidently changing how things operate (If they know the main password.)
CALL 1
CALL 2
CALL 3
CALL 4
CALL 5
PARK
MUTE
GPIK 1 [#]
GPIK 2 [#]
GPIK 3 [#]
GPIK 4 [#]
GPIK 5 [#]
GPIK 6 [#]
BARGE
DS
DS
PAGE
SPD
DND
VT
VMMSG
