make a call.double phone will have very big alert noise
when your extension telephone set answer a phone.
2. OPERATION
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RECEIVE A CALL
When receives a FSK or DTMF incoming call, phone
automatically detects and displays the incoming call
number. If it is FSK mode calling, the display signal will
automatically refresh the setting of month, day, hour and
minute, while the setting of year remains unchanged. For a
DTMF mode calling, every setting will remain unchanged.
And be causer the DTMF signal only includes incoming
calling number, but no calling date. So when the system
receives DTMF incoming call, it will endow it’s own date to
the incoming call number with LCD displaying the calling
sequence simultaneously.
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REVIEW INCOMING CALL NUMBERS
Press UP or DOWN key to search upwardly or downwardly
for the latest incoming call numbers. Hold the key for over 4
seconds to search rapidly.
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REVIEW OUTGOING CALL NUMBERS
Press OUT key repeatedly to search downwardly the latest
outgoing phone numbers.
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DEL BUTTON
Press DEL key to exit corresponding setting in setup or
delete the number in reviewing mode. Press DEL key for 3
over seconds to delete all the incoming call numbers in
reviewing incoming calls mode.
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REDIAL KEY
In case you come across a busy line, hang up handset
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