Siemens 5000 RSM - Manual (Page 9)

Basic operating instructions
9
optiPoint 500 advance control panel with optiPoint key modules
Keys for
telephone
settings
Iluminated
Display,
2 lines with
24 chars Keypad
Handset
Key for
confirming
a function
Key field -
freely programmable keys
Speaker
for open
listening
and ring tones
Fixed
function key:
Release
Microphone for speakerphone
mode Keys for scrolling to
functions
Key field - fixed function keys:
Program/Service
Redial
Mute or Internal
Speaker
LEDs
optiPoint key module
with programmable
keys