General System Features
178
Call Signals
To enable you to distinguish between different call
types, various cadences and tones are used in sig-
naling.
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With internal calls, your telephone rings once
every four seconds (single-tone sequence).
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With external calls, your telephone rings
twice in rapid succession every four seconds
(dual-tone sequence).
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With calls from the entrance telephone, your
telephone rings three times in rapid succes-
sion every four seconds (triple-tone se-
quence).
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If you receive a second call or a call from an-
other member of your group (call pickup
group), you hear a brief alerting tone (bleep
tone).
Date and Time Indication
The date and time are shown on the display when
the telephone is in the idle state. Depending on
your system configuration, the changeover be-
tween standard time and daylight saving time oc-
curs automatically.
Direct Inward Dialing
Telephones, PCs, or fax machines can be reached
directly, without switching, or by simply dialing the
company’s call number and the DID number of the
extension line.
