Panasonic KX-TS4200 Operating Instructions Manual page 11

Q Headset jack
R Volume key ({-} {+})
S {INTERCOM}
INTERCOM indicator
T {TRANSFER}
Memory card:
Remove the memory card
and use it as a name index
for speed dialer or
extensions.
For assistance, please visit http://www.panasonic.com/phonehelp
U {CALLER ID}
V {ERASE}
W {PHONEBOOK}
X MIC (Microphone)
Preparation
11