Panasonic KX-TG5571M Operating Instructions Manual page 42

Intercom Features
Monitoring with the base unit
1
Press {INTERCOM}, then press
{MUTE}.
2
To call the desired handset, press its
extension number ({1} to {8}).
L The base unit will start to monitor the
room through the handset.
3
To end monitoring, press {INTERCOM}
or {SP-PHONE}.
L The monitored handset user can stop
being monitored by pressing {OFF}.
Note:
L The monitored handset displays "Room
monitor".
L If the room monitor feature of the
destination handset is off or if that
handset is on the base unit, a busy tone
will be heard.
42
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