Xerox 4520 - Manual (Page 238)

C a b l e S p e c i f i c a t i o n s
A-12 ❖ 4 5 2 0 / 4 5 2 0 m p U s e r ’ s G u i d e
A null modem is a device that eliminates both a modem and a
telephone line. When the printers are used with an
asynchronous serial interface connected to a DTE host (such
as a PC-compatible), a modem, modem eliminator, or a null
modem is required. Figure A.6 shows null modem wiring.
Figure A.6 Null Modem wiring
Network interface communication is the most common for
enabling multiple users to print from a host system.
For network interface cables, refer to your network software
documentation.
Null Modem
Network Interface
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