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does not accept
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U5 How to set up communication between 2
internal units (intercom function)
internal unit receiving the call is
connected to the audio line
hang up
CANC
does not accept
call has not taken place correctly
28
hang up
system is busy
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CAUTION!
If the external unit calls the switchboard during
an intercom call between internal units which
has been underway for more than one minute, the
intercom call will be reset so that the switchboard
can deal with the incoming call.
U6 How to call an internal unit listed in the call log
hang up
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