Siemens hicom 150 H optiset E standard Operating Instructions Manual page 3

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Speaker Keys for
for open telephone
listening settings
and ring tones
Hand-
set
6
Display,
2 lines with
24 char
Keypad
Key for
confirming
a function
Microphone for speakerphone mode
-
Key field fixed function keys:
Program/Service
Redial
Mute or Internal
Speaker
Keys for
scrolling
to functions
optiset E key module
with programmable keys
LEDs
Key field
freely
programmable
keys
Fixed
function key:
Release
-