Lantronix EMG 7500, User Manual

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2: Introduction
EMG™ Edge Management Gateway User Guide 31
Device Port Interfaces
RS-232 RJ45 Interface
All devices attached to the RJ45 device ports must support the RS-232C (EIA-232) standard. For
serial RJ45 device ports, RJ45 cabling (e.g., category 5 or 6 patch cabling) is used.
Serial RJ45 device ports for the EMG are reversed by default so that straight-through RJ45 patch
cables may be used to connect to Cisco and Sun RJ45 serial console ports. See
Table 2-9
. The
serial RJ45 ports have software reversible pinouts to switch between DTE and DCE applications.
The serial RJ45 ports match the RJ45 pinouts of the console ports of many popular devices found
in a network environment, and where different can be converted using Lantronix adapters. The
RJ45 ports have software reversible pinouts to switch between digital terminal equipment (DTE)
and digital communications equipment (DCE) applications. RJ45 to DB9/DB25 adapters are
available from Lantronix. For serial pinout information, see
Appendix C: Adapters and Pinouts on
page 464
.
Table 2-9 Device DCE (Reversed) & DTE Port Pinout
Additional device port features:

RAW TCP, Telnet or SSH to a serial port by IP address per port or by IP address and TCP port
number

Simultaneous access on the same port - “listen” and “direct” connect mode

Device ports support the following baud rate options: 300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, 115200, 230400, 460800, and 921600 baud.
USB Interface
USB device ports can be used with a USB type A connector to serial adapter, if needed.
DCE Pin DTE Pin Description
8 1 RTS (output)
7 2 DTR (output)
6 3 TXD (output)
5 4 Ground
4 5 Ground
3 6 RXD (input)
2 7 DSR (input)
1 8 CTS (input)