Digital Equipment DECserver 900MC Operating and maintenance instructions

DECserver 900MC
Installation and Configuration
Part Number: EK-DSRVX-IC. A01
February 1997
This manual describes how to install and configure the DECserver 900MC.
Revision/Update Information: This is a new document.

Digital Equipment Corporation makes no representations that the use of its products in the manner
described in this publication will not infringe on existing or future patent rights, nor do the descriptions
contained in this publication imply the granting of licenses to make, use, or sell equipment or software in
accordance with the description.
Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid written
license from Digital or an authorized sublicensor.
© Digital Equipment Corporation 1997. All rights reserved. Printed in U.S.A
The following are trademarks of Digital Equipment Corporation: clearVISN, DEC, DEChub, DECserver,
OpenVMS, ThinWire, ULTRIX, VAX, VMS, and the DIGITAL logo.
The following are third-party trademarks:
AT&T is a registered trademark and ST is a trademark of American Telephone and Telegraph Company.
Microcom is a trademark of Microcom, Inc.
MS-DOS is a registered trademark of Microsoft Corporation.
Novell and IPX are registered trademarks of Novell, Inc.
All other trademarks and registered trademarks are the property of their respective holders.
FCC Notice — Class A Computing Device:
This equipment generates, uses, and may emit radio frequency energy. The equipment has been type
tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules,
which are designed to provide reasonable protection against such radio frequency interference.
Operation of this equipment in a residential area may cause interference in which case the user at his own
expense will be required to take whatever measures may be required to correct the interference. Any
modifications to this device - unless expressly approved by the manufacturer - can void the user’s
authority to operate this equipment under part 15 of the FCC rules.
VCCI Notice — Class 1 Computing Device:
This equipment is in the 1st Class category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by
Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in
commercial and/or industrial areas. Consequently, when used in a residential area or in an adjacent area
thereto, radio interference may be caused to radios and TV receivers. Read the instructions for correct
handling.
CE Notice — Class A Computing Device:
Warning!
This is a Class A product. In a domestic environment, this product may cause radio interference, in which
case the user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes
Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen
verantwortlich ist.
Avertissement!
Cet appareil est un appareil de Classe A. Dansun environment résidentiel cet appareil peut provoquer des
brouillages radioélectriques. Dans ce cas, il peut être demandé à l'utilisateur de prendre les mesures
appropriées.

iii
Contents
Preface
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Purpose of This Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
Conventions and Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Terms Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Associated Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xii
Correspondence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Documentation Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Online Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
How to Order Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Safety
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvii
1 Product Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
What is the DECserver 900MC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Hot Swap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Configuration and Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Protocols and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Special Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

iv
2 Installing the Module
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Module Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Front Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Back Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
How to Install the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Task 1: Compare the Power Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Task 2: Seat the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Task 3: Verify Initial LED Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Task 4: Connect Port Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
3 Installing the Setup Port Cable
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Signaling Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Setup Port Device Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Connecting the Setup Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
4 Configuring the Module in a DEChub 900
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
In this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
DEChub 900 MultiSwitch INSTALLATION MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
[5] Start Redirect Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Using Menus to Configure the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
[1] Reset with Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
[2] Reset with Current Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
[3] Show Current Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 4-7
[4] Configure IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
[1] Set SNMP Read/Write Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
[2] Set In-Band Interface IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

v
5 Installing Flash RAM
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Inserting the Flash RAM Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Booting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
6 Configuring the Modem Ports Using the Access Server
Manager
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Adding the DECserver 900MC to the Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Configuring the Modem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Setting Modem Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Sending Commands to the Modem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Upgrading Modem Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Changing the Country Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
7 Configuring the Modems Ports Using the Console
Commands
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Setting the Country Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Displaying the Current Country Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Setting the Country Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Logging Out Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Logging Out a Port and Resetting Port Characteristics to Factory Defaults . . . . . . . . . . . . . 7-4
Logging Out a Port and Sending a Reset Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Communicating With the Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

vi
8 Removing the Module
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
In This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Removing the Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Unseating the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
A Problem Solving
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
LED Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Module LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
Port LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Normal Powerup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Problem Solving Using the LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5
Problem Solving Using the Seven-Segment Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Troubleshooting Tips When Using Your Built-in Modems . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
B Connector and Cable Assignments
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Compatible Cables for the Console Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
8-Pin MJ Console Connector Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
8-Pin MJ Telephone Connector Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
C Product Specifications
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Product Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

vii
D Microcom Networking Protocol
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1
MNP Class 10 and MNP Class 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2
Other Classes of MNP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-3
E Regulatory Requirements
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-1
Regulatory Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-2
Information Requested by the Telephone Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-3
Canadian Department of Communications Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-4
Canadian EMI Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-5
F AT Commands
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-1
In This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-1
AT Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-2
Commands to Change or Read Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-62
Register Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-63

viii
Figures
2-1 Front Panel LEDs and Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-2 Back Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-3 Power Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-4 Seating the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2-5 Connecting the Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
3-1 Setup Port Cabling Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
5-1 Inserting the Flash RAM Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
8-1 Removing the Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8-2 Unseating the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
A-1 Seven-Segment Display Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-10
B-1 8-Pin MJ Description for Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
B-2 8-Pin MJ Description for Modem Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Glossary
Tables
2-1 Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-2 Back Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
7-1 Country Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
A-1 Module LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-2 Port State LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A-3 Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
B-1 Compatible Cables for DECserver 900MC Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
B-2 DECserver 900MC Console Port Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
B-3 DECserver 900MC Modem Port Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
C-1 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
C-2 Acoustics - Declared values per ISO 9296 and ISO 7779. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
C-3 Schallemissionswerte Werteangaben nach ISO 9296 und
ISO 7779/DIN EN277792 C-3
C-4 Connectors for the DECserver 900MC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
D-1 MNP Class 10 and MNP Class 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
D-2 Other MNP Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
E-1 Regulations for United States and Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

ix
Preface
Overview
Purpose of This Document
This manual describes how to install, configure, and use the DECserver 900MC
module. It also provides problem solving, connector and cable assignments, product
specifications, AT commands, and information on the Microcom Networking Protocol
(MNP).
Intended Audience
This manual is intended for use by personnel who will install, configure, and use the
DECserver 900MC.

x
Organization
This manual is organized as follows:
Section Description
Chapter 1 Provides an overview ofthe DECserver 900MC module and
describes its features.
Chapter 2 Provides instructions for installing the DECserver 900MC
module in a DEChub 900 MultiSwitch.
Chapter 3 Provides instructions for installing the setup port on the
DECserver 900MC.
Chapter 4 Provides configuration information when the module is
installed in a DEChub 900 MultiSwitch.
Chapter 5 Provides information on how to install Flash RAM.
Chapter 6 Provides information on how to configure the module’s
built-in modems using the Access Server Manager.
Chapter 7 Provides information on how to configure the module’s
built-in modems using console commands.
Chapter 8 Provides information on how to remove the module from the
DEChub 900 MultiSwitch.
Appendix A Provides installation-specific problem solving information
using the LEDs and seven-segment display. In addition, it
contains general modem use problem solving information.
Appendix B Provides connector and pin assignment information.
Appendix C Provides product specifications for the DECserver 900MC.
Appendix D Providesinformation on theMicrocom Networking Protocol
(MNP).
Appendix E Provides information on regulatory requirements.
Appendix F Provides information on the AT command set, including
command syntax and a description of each command.
Glossary Lists pertinent terms and their definitions.

xi
Conventions and Terms
Overview This book uses the following conventions.
Terms Used in This Manual
This book uses the following terms:
Convention Description
Special Type This special type in examples indicates system
output.
Boldface Boldface type in examples indicates user input.
<Return> Indicates that you should press the Return key.
Term Definition
Ethernet DIGITAL’s term for its product compatibility with ISO
8802-3/ANSI/IEEE 802.3 standards and the Ethernet
standards for CSMA/CD local area networks (LANs).
SNMP Simple Network Management Protocol, an industry
standard protocol for network management.

xii
Associated Documents
The following documents provide related information about the module. For
information on how to order additional documentation, see the ordering information
provided in this preface.
Title and Order Description
DEChub 900 MultiSwitch
Owner’s Manual Provides installation, use, security, and troubleshooting information for the
DEChub 900 MultiSwitch.
DEChub ONE Installation Provides installation and operation
guidelines for single-slot hub
configuration, including rack-mount
options and cabling.
DECserver Network Access
Software Installation or
DECserver Network Access
Server Getting Started
Provides information on how to install
the operational software for DECserver
modules on systems running the
Windows 95, Windows NT, OpenVMS,
Digital UNIX, ULTRIX, or UNIX
operating systems.
Network Access Server
Command Reference Provides information on the usage and syntaxofcommandsforvariousnetwork
access servers.
Network Access Server
Management Provides the procedures to perform management tasks on various network
access servers.
Network Access Server
Problem Solving Provides problem-solving procedures and tools for various network access
servers.

xiii
clearVISN Installation Provides pre- and post-installation
information, aswell asactualinstallation
procedures for each application.
clearVISN Product
Overview Provides an overview of clearVISN, an explanation of each application and
descriptions of all concepts necessary to
understand and use the application
efficiently.
clearVISN Configuration
and Use Provides information for starting each application, configuring them and
general use information.
Title and Order Description

xiv
Correspondence
Documentation Comments
If you have comments or suggestions about this document, send them to the Network
Products Engineering.
Attn.: Documentation Project Manager
FAX: [phone]
E-MAIL: doc_f[email protected].dec.com
Online Services
To locate product specific information, refer to the following online services:
BBS To read the Bulletin Board System, set your modem to 8 bits, no parity, 1 stop bit and
dial 508-486-5777 (U.S.)
WWW The Digital Equipment Corporation Network Products Business Home Page on the
World Wide Web is located at the following addresses:
North America: http://www.networks.digital.com
Europe: http://www.networks.europe.digital.com
Australia: http://www.digital.com.au/networks

xv
How to Order Additional Documentation
To order additional documentation, use the following information:
To Order: Contact:
By Telephone USA (except Alaska, New Hampshire, and Hawaii):
1-800-DIGITAL (1-800-344-4825)
Alaska, New Hampshire, and Hawaii: 1-603-884-6660
Canada: 1-800-267-6215
Electronically
(USA only) Dial 1-800-DEC-DEMO (For assistance, call 1-800-DIGITAL)
By Mail
(USA and
Puerto Rico)
DIGITAL EQUIPMENT CORPORATION
P.O. Box CS2008
Nashua, New Hampshire 03061
(Place prepaid orders from Puerto Rico with the local Digital
subsidiary: 809-754-7575)
By Mail
(Canada) DIGITAL EQUIPMENT of CANADA LTD. 940 Belfast Road
Ottawa, Ontario, Canada K1G 4C2
Attn.: A&SG Business Manager
Internationally DIGITAL EQUIPMENT CORPORATION
Attn.: A&SG Business Manager
c/o local Digital subsidiary or approved distributor
Internally U.S. Software Supply Business (SSB)
DIGITAL EQUIPMENT CORPORATION
8 Cotton Road
Nashua, New Hampshire 03063

xvi

xvii
Safety
Overview
Any warning or caution that appears in this manual is defined as follows:.
WARNING Contains information to prevent personal injury.
CAUTION Contains information to prevent damage to
equipment.
VORSICHT Enthält Informationen, die beachtet werden müssen
um den Benutzer vor Schaden zu bewahren.
ACHTUNG Enthält Informationen, die beachtet werden müssen
um die Gerate vor Schaden zu bewahren.
DANGER Signale les informations destinées à prévenir les
accidents corporels.
ATTENTION Signale les informations destinées à prévenir la
détérioration du matériel.
AVISO Contiene información para evitar daños personales.
PRECAUCIÓN Contiene información para evitar daños al equipo.

xviii
Thecautions that must be observed for the hardwaredescribed in this manual are listed
below in English, German, French, and Spanish.
CAUTION This action deletes all configured settings and
replaces them with factory default values. All
configuration settings will be lost.
ACHTUNG Bei diesem Vorgang werden alle
Konfigurationseinstellungen gelöscht und die
Werkseinstellungen wieder eingesetzt. Alle
Konfigurationsdaten gehen verloren.
ATTENTION Cette action supprime tous les paramètres de
configuration et les remplace par des valeurs
prédéfinies. Tous les paramètres de configuration
seront perdus.
PRECAUCIÓN Esta intervención borrará todos los parámetros de
configuración ylossustituiráporvalorespordefecto
definidos de fábrica. Se perderán todos los
parámetros de configuración.

Product Introduction 1-1
Chapter 1
Product Introduction
Overview
IntroductionThis chapter describes the DECserver 900MC module and its features.
In This Chapter
Topic Page
What is the DECserver 900MC? 1-2
Features 1-3

What is the DECserver 900MC?
1-2 Product Introduction
What is the DECserver 900MC?
The DECserver 900MC is a nine-port network access server that provides remote
access connections to an Ethernet local area network (LAN). The DECserver 900MC
includes four megabytes (MB) of memory and runs Version 2.1 (or greater) of the
DECserver Network Access Server (DNAS) software.
You can install and configure the DECserver 900MC in a DEChub 900 MultiSwitch
(also referred to as DEChub 900) or as a stand-alone unit in a DEChub ONE or
DEChub ONE-MX docking station.
The DECserver 900MC contains one serial port and eight modem ports. Each modem
port is equipped with a built-in Microcom DeskPorte Fast+ modem.
Each DeskPorte Fast+ modem provides the following features:
•V.34 data rates up to 33,600 Bps
•2-wire switched line interface through individual 8-pin MJ connectors
•Universal Direct Access Arrangement (DAA)
(DAA allows different countries to connect without requiring different product
variants or hardware jumpers.)
•V.42 and V.42bis error correction and data compression protocols
•Microcom Networking Protocol (MNP) support (see Appendix D, Microcom
Networking Protocol)
•Cellular operation using the MNP Class 10 protocol with Adverse Channel
Enhancements (ACE) (see Appendix D, Microcom Networking Protocol)