User`s guide

Serial Port Cabling
Chapter 19 Specifications and Certifications 302
Serial Port Cabling
The Digi Passport unit simplifies cabling. The RJ-45 8-pin configuration
matches all SUN and Cisco RJ-45 console port configurations, enabling
CAT 5 cabling without pinout concerns. Three DB-25 and one DB-9
adapters come in the package. A DB-25 male, a DB-25 female, and a DB-9
adapter support console management applications. A DB-25 male adapter
provides a modem connection. See the cable adapter information that
follows later in this chapter.
Note: The cable length restrictions common to RS-232 cables apply to the
Digi Passport serial cable as well.
Serial Port Pinouts
The Digi Passport unit uses an RJ-45 connector for serial ports. Pin
assignments are listed in the following table.
Pin Description
1CTS
2DSR
3RxD
4GND
5 DCD
Note: Inbound signal can also be
used as a second ground.
6TxD
7DTR
8RTS