Seagate ST31230N/ND Guia de Instalação descarregar pdf (Página 93)

Cabling, installing, and configuring the peripheral devices 8-21

Configuring local and remote modems

Standard 1.0 Option 11 EC Installation and Maintenance Guide November 1999

Configuring local and remote modems

Introduction

Modems may be supplied with the EC 11 for remote access.

Each modem needs to be configured before use.

Off-site personnel can access the EC 11 by dialing in through

a remote modem connected to a terminal. Before this can be

done, the A/B switch must be set to disconnect the local

administration terminal from the console port of the EC 11,

and connect the local modem in its place.

Local modem

Configure the local modem by connecting it to a VT220

compatible terminal (for example, the VT520 terminal

supplied with the EC 11) and sending commands to it as

described in this section.

Remote modem

Connect the remote modem to a terminal for configuration.

If you wish, you can connect it temporarily to the EC 11

terminal for configuration (using a straight-through cable),

and move it to its permanent location afterward. As an

alternative, you can use the remote maintenance terminal to

program the remote modem after installation without

switching cables.

Supported modems

The U.S. Robotics 33.6 or 14.4 modems, Racal ALM 3223,

or Hayes Optima 14.4 external modems may be used with the

EC 11. New systems are shipped with the U.S. Robotics 33.6

modem.

Modem speed

Modems must be configured so the baud rate matches that of

the terminal and the CPU’s NVRAM (non-volatile memory).

If you need to verify the rate of the installed Enhanced

MMP40 or MMP40 card, see “Verifying the MMP40 card

baud rate” in the System Installation and Modification Guide

(NTP 555-7001-215) for instructions. Alternatively, you may

use the Change Speed utility available in the System and

Features Dependent Utility on the Tools menu.

Before you configure the modem, the terminal must be

configured to the desired speed. This determines the

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Seagate ST31230N/ND Guia de Instalação Página 93