Siemens optiPoint 500 economy User's Manual | Page 10

Basic Operating Instructions

10

Control Panel optiPoint 500 advance with optiPoint key module

Keys for
telephone
settings

Illuminated Dis-
play,
2 lines with
24 chars

Keypad

Handset

Key for 
confirming
a function

Speaker
for open listening 
and ring tones

Fixed
function key:
Release

Microphone for speaker-
phone mode

Keys for scrolling to 
functions

Key field 

- fixed function keys:

Program/Service
Redial
Mute or Internal
Speaker

LEDs

optiPoint key module 
with additional
programmable keys

Key field 

– 

freely programmable keys