Speaker; Speakerphone - Siemens Standard, Advance, Advance Plus, Advance Conference Telephone Manual

Speaker

The Optiset E Advance telephone has a speaker underneath the
handset that you can use for receiving calls or listening to the
PhoneMail system. Since the speaker is one-way, you must pick
up your handset to speak to the other party.
To answer a call,
Pick up the handset. The blinking status light next to the line
key turns on steadily.
To hang up,
Hang up the handset.

Speakerphone

The Optiset E Standard and Advance Plus telephones have a
two-way speakerphone, consisting of a speaker and a
microphone. You can use either the handset or the
speakerphone to make or receive calls. During a conversation,
you can use your speakerphone instead of your handset by
pressing the Speaker key and hanging up the handset. If you
want to switch back to using your handset, pick it up.
To make a call,
Press a line key or the Speaker key to get a dial tone, then dial.
To answer a call,
Press the line key next to the blinking status light.
To hang up,
Press the line key or the Speaker key.
To switch during a call,
If you are using the handset and want to use the speakerphone,
press the Speaker key and hang up the handset. If you are using
the speakerphone and want to use the handset, pick up the
handset.
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