Multitech MultiDSU MTT1DSU User manual

Model MTT1DSU
User Guide

Class A
Manual Declaration
NOTE: This equipment has been tested and found to comply with the
limits for a Class A digital , pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environ-
ment. This equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with the User
Guide, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct
the interference at his own expense.
WARNING: Changes or modifications to this unit not expressly approved
by the party responsible for compliance could void the user's authority
to operate this equipment.

MultiDSU User Guide
82083200 Revision A
ModelMTT1DSU
This publication may not be reproduced, in whole or in part, without prior
expressed written permission from Multi-Tech Systems, Inc. All rights
reserved. Copyright © 1998, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with
respect to the contents hereof and specifically disclaims any implied
warranties of merchantability or fitness for any particular purpose.
Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this
publication and to make changes from time to time in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or
organization of such revisions or changes.
RecordofRevisions
Revision Description
AManual released. All pages at rev A.
(8/14/98) Patents
This Product is covered by one or more of the following U.S. Patent
Numbers: 5.301.274; 5.309.562 ; 5.355.365; 5.355.653; 5.452.289;
5.453.986 . Other Patents Pending.
TRADEMARK
Trademark of Multi-Tech Systems, Inc. is the Multi-Tech logo.
Windows is a registered trademark of Microsoft.
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax [phone]
Tech Support [phone]
BBS [phone] or [phone]
Internet Address: http://www.multitech.com
Fax-Back [phone]

iv
Contents
Chapter 1 - Introduction and Description
Introduction ................................................................................. 8
AboutThisUserGuide ................................................................ 9
FrontPanel................................................................................ 10
BackPanel ............................................................................... 11
LINEConnector .................................................................. 11
COMMANDConnector........................................................ 11
DataConnector................................................................... 11
POWERConnector............................................................. 11
FCCRegulations forTelephoneLine Interconnection ................. 12
Specifications ........................................................................... 14
T1Line ............................................................................... 14
DataPort ............................................................................ 14
Electrical/Physical/Environmental ...................................... 14
Chapter 2 - Installation
Introduction ............................................................................... 16
SafetyWarnings ........................................................................ 16
Unpacking................................................................................. 16
MultiDSUConfiguration ............................................................. 17
CablingYourMultiDSU .............................................................. 19
Configuration............................................................................. 21
Chapter 3 - Menu System
Introduction ............................................................................... 30
ConfigurationsMenu ........................................................... 30
T1Line ConfigurationMenu....................................................... 30
FramingFormat .................................................................. 31
LineCoding ........................................................................ 31
LineTypeandLength .......................................................... 32
DS0Speed/DS0AllocationMenu.............................................. 32
DS0Speed ......................................................................... 32
DS0Allocation.................................................................... 32
ClockingMenu .......................................................................... 33
V.35 Port Menu ......................................................................... 33
SetConfigurations .............................................................. 33

v
SetandSaveConfigurations .............................................. 33
Reset to Factory Defaults ................................................... 34
CurrentStatusScreen ........................................................ 34
Statistics .................................................................................. 35
Out Of Sync Secs .............................................................. 35
ErroredSecs ...................................................................... 35
Bursty Errored Secs ........................................................... 36
SeverelyErroredSecs........................................................ 36
FailedSecs ........................................................................ 36
ControlledSlips .................................................................. 36
FramingBitErrors............................................................... 36
Bipolar Violations ................................................................ 36
Diagnostics ............................................................................... 37
SystemInformation................................................................... 38
Chapter 4 - Remote Configuration
Introduction ............................................................................... 40
Modem-BasedRemoteConfigurationProcedure................. 40
Chapter 5 - Diagnostics
Introduction ............................................................................... 42
SetupforDiagnosticLoopbackTests ........................................ 42
DiagnosticsMethodology .......................................................... 42
DiagnosticsMenu ..................................................................... 43
Local Loop Back................................................................. 43
RemoteLoopBack ............................................................. 43
Put Remote Into Loop Back................................................ 44
Processor Loopback.......................................................... 44
Chapter 6 - Warranty, Service and Technical Support
Introduction ............................................................................... 46
LimitedWarranty ................................................................. 46
On-lineWarrantyRegistration.............................................. 47
Service ............................................................................... 47
AbouttheInternet............................................................... 48
AbouttheMulti-Tech Fax-Back Service .............................. 48

Chapter 1 - Introduction
and Description

8
Introduction
The Multi-Tech Systems MultiDSU (Model number MTT1DSU) is a low
cost, full-featured T1-FT1 Data Service Unit (DSU). The MultiDSU
provides an interface between point-to-point T1 or Fractional T1 service
and the end user's Data Terminal Equipment (DTE). This unit also
provides Facility Data Link (FDL) support.
Housed in a compact, durable housing, the MultiDSU supports D4 or
ESF framing and AMI or B8ZS line coding on the T1 Line and supports
synchronous data rates from 56 kbps to 1.536 Mbps to the DTE. A
single V.35 (Winchester 34-pin) physical interface is the Data port to the
DTE device.
This unit enables you to run complete diagnostics (loopback tests on
your T1 line or your local or remote DSU) from your PC or terminal.
Figure 1-1. MultiDSU

9
About This User Guide
This user guide describes the MultiDSU and explains how to install and
configure the unit. The information contained in each chapter is as
follows:
Chapter 1 - Introduction and Description
Chapter 1 describes the MultiDSU and provides a review of this user
guide. This chapter describes the front panel indicators and back panel
connectors and switch. Applicable FCC regulations and a list of relevant
specifications are provided at the end of the chapter.
Chapter 2 - Installation
Chapter 2 lists the safety warnings that are applicable to the MultiDSU
then steps you through the process of unpacking your MultiDSU,
connecting signal cables and power, and configuring your MultiDSU for
operation.
Chapter 3 - Menu System
Chapter 3 describes the various options available on all the menus and
submenus used to configure and operate the MultiDSU.
Chapter 4 - Remote configuration
This chapter provides instructions for modem-based remote configura-
tion of the MultiDSU.
Chapter 5 - Diagnostics
Chapter 5 describes how to set up for, and perform, several types of
diagnostic loopback tests for the MultiDSU.
Chapter 6 - Warranty, Service and Technical Support
Chapter 6 provides instructions on getting service for your MultiDSU at
the factory, and includes a statement of the limited warranty and space
for recording information about your MultiDSU prior to calling Multi-
Tech's Technical Support. The final sections explain how to obtain
technical support through our Web site and ftp site on the Internet or our
fax-back system.

10
Front Panel
The front panel contains three sets of LEDs that provide the status of
the MultiDSU and its data and T1 connections. The Data LEDs display
the status and activity of the V.35 Data port. The T1 Line LEDs show
whether the T1 Line is online or in a failure mode. Two monitor jacks
enable you to monitor the T1 line with external test equipment.
Figure 1-1. Front Panel
PWR (Power) Lights when the power switch is in the "1"
(On) position and the MultiDSU is powered by the
external power supply.
BTG (Booting) Lights while the MultiDSU is booting.
TST (Test) Lights during diagnostic tests and during any
loopback tests. Data
XMT (Transmit) Lights when packets are being transmitted
to the T1 line from the DTE device.
RCV (Receive) Lights when packets are being received
from the T1 line by the DTE device.
RTS (Ready to Send) Lights whenever the DTE device is
receiving RTS.
T1 Line
ONL (Online) Lights whenever a carrier signal is detected
and no error conditions are present.
SLS (Sync Loss) Lights when there is a Loss of Sync in the
input signal .
RED (Warning) Lights when there is a red alarm on the T1
line.
YEL (Warning) Lights when there is a yellow alarm on the
T1 line. Monitor jacks
XMT (Transmit) monitors transmit data on the T1 line.
RCV (Receive) monitors receive data on the T1 line.