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Multi-port
When the optional ISDN Unit or optional Extra G3 Interface Unit is installed,
communications can take place simultaneously through two lines at once.
Option
Without option
Extra G3 Interface Unit
ISDN Unit
Extra G3 Interface Unit
+
Extra G3 Interface Unit
Extra G3 Interface Unit+IS-
DN Unit
Note
❒ A maximum of three communications can take place simultaneously.
❒ You cannot perform three Immediate Transmissions simultaneously.
❒ If three fax messages are received simultaneously, they cannot be printed out
at the same time.
❒ If three communications are in progress, the display indicates the first com-
munication that was initiated.
Connecting the Machine to a Telephone Line and Telephone
Available Line Types
PSTN
PSTN+PSTN
PSTN+ISDN
ISDN
PSTN+PSTN+PSTN
PSTN+PSTN+ISDN
PSTN+ISDN
Available Protocol Combinations
G3
G3+G3
G3+G4
or
G3 (ISDN)+G4
G3 (ISDN)+G4
G3+G3+G3
G3+G3+G4
or
G3+G3(ISDN)+G4
G3+G3(ISDN)+G4
or
G3 (ISDN)+G3(ISDN)
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