Things You Should Know DS/ITP-5012L Phone User Guide
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9. Changing Dial Tone
To change mechanical (pulse) dial mode to
electronic (tone) dial mode, press the [#] button
before making a call. Every number dialled
subsequently will be transmitted in tone mode.
10. Phone Status Indicator
The status indicator turns on or off, and lights different colours, according to
the status of the phone:
Status Indication
Busy
Steady red.
Station Ring Slow flashing red.
Trunk Line Ring Slow flashing blue.
Recall Ring Flashing pink.
Message Waiting Flashing red.
DND Set Slow flashing red.