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CHAPTER

Introduction

Features

ESP Ethernet serial hubs contain an autosensing 10/100 Ethernet port and multi-interface (MI)

serial ports. MI ports may be configured to use the RS-232, RS-422 or RS-485 physical interface.

• The ESP-2 MI hub contains two MI serial ports.

• The ESP-4 MI hub contains four MI serial ports.

• The ESP-8 MI hub contains eight MI serial ports.

• The ESP-16 MI hub contains eight MI serial ports and eight dedicated RS-232 ports.

Modular adaptors are available to facilitate the connection between the ESP serial hub ports and

target devices.

Serial port access

All ESP hubs support several ways to access the serial ports. Each of these connection methods is

described in Chapter 3, beginning on page 15.

• Serial port redirection

• Telnet server

• Raw TCP server

• Raw TCP client

• Modem emulation

• Configuration utility

Serial port redirection uses drivers installed on a host computer. The ESP serial hub drivers are

supported on the following operating systems:

Windows

2000 Windows XP

Windows NT

4.0 Windows Server 2003

OpenServer™ 5.0.5a or higher UnixWare

7.0.1a or higher

Linux

AIX

4.3 and 5.1/5.2

Sun

Solaris

™

for X86 or SPARC 8 or higher

Avocent ESP Serial Hub User Manual

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