Paradyne FrameSaver 9120 User manual

AREA CODE CHANGE
Please note that the area code for
Paradyne Corporation in Largo, Florida
has changed from 813 to 727.
For any Paradyne telephone number that
appears in this manual with an 813 area
code, dial 727 instead.

T1 FRAME RELAY ACCESS UNIT
MODEL 9120/9121
USER’S GUIDE
Document No. 9121-A2-GB20-00
June 1997

A 9121-A2-GB20-00
June 1997
Copyright 1997 Paradyne Corporation.
Copyright 1993 Stac Electronics, including one or more
U.S. Patents No. 4701745, 5016009, 5126739, and 5146221, and other pending patents.
All rights reserved.
Printed in U.S.A.
Notice
This publication is protected by federal copyright law. No part of this publication may be copied or distributed,
transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form
or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the
express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826, Largo,
Florida 33779-2826.
Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically
disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation
reserves the right to revise this publication and to make changes from time to time in the contents hereof without
obligation of Paradyne Corporation to notify any person of such revision or changes.
Changes and enhancements to the product and to the information herein will be documented and issued as a new
release to this manual.
Warranty, Sales, and Service Information
Contact your sales or service representative directly for any help needed. For additional information concerning
warranty, sales, service, repair, installation, documentation, or training, use one of the following methods:
Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com
Via Telephone: Call our automated call system to receive current information via fax or to speak with a
company representative.
— Within the U.S.A., call 1-800-870-2221
— International, call 813-530-2340
Trademarks
All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered
service marks of their respective owners.

Important Information
B
9121-A2-GB20-00 June 1997
EMI Warnings
!WARNING:
This equipment has been tested and found to comply with the limits for a Class A digital device,
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 environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, 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.
The authority to operate this equipment is conditioned by the requirements that no modifications will be
made to the equipment unless the changes or modifications are expressly approved by Paradyne.
!WARNING:
To Users of Digital Apparatus in Canada:
This Class A digital apparatus meets all requirements of the Canadian interference-causing equipment
regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du règlement sur le matériel
brouilleur du Canada.

Important Information
C 9121-A2-GB20-00
June 1997
Important Safety Instructions
1. Read and follow all warning notices and instructions marked on the product or included in the manual.
2. This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is
a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the
grounding type plug by modifying the plug or using an adapter.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth
ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician
has corrected the problem.
If a 3-wire grounding type power source is not available, consult a qualified electrician to determine another
method of grounding the equipment.
3. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to
protect it from overheating, these slots and openings must not be blocked or covered.
4. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the
power cord.
5. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous
high voltage points or other risks. Refer all servicing to qualified service personnel.
6. General purpose cables are provided with this product. Special cables, which may be required by the regulatory
inspection authority for the installation site, are the responsibility of the customer.
7. When installed in the final configuration, the product must comply with the applicable Safety Standards and
regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If
products installed in separate buildings are interconnected, the voltage potential may cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if
necessary, implement corrective action prior to interconnecting the products.
9. This product contains a coin cell lithium battery that is only to be replaced at the factory. Caution: There is a
danger of explosion if the battery is incorrectly replaced. Replace only with the same type. Dispose of used
batteries according to battery manufacturer’s instructions. Attention: Il y a danger d’explosion s’il y a
remplacement incorrect de la batterie. Remplacer uniquement avec une batterie du meme type. Mettre au rebut
les batteries usagees conformement aux instructions du fabricant.
10. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
—Never install telephone wiring during a lightning storm.
—Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
—Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface.
—Use caution when installing or modifying telephone lines.
—Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of
electric shock from lightning.
—Do not use the telephone to report a gas leak in the vicinity of the leak.

i
9121-A2-GB20-00 June 1997
Contents
About This Guide
Purpose and Intended Audience iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Document Organization iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product-Related Documents iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1About the Frame Relay Access Unit
What Does the T1 Frame Relay Access Unit Do? 1-1. . . . . . . . . . . . . . . . . . .
Configuration Shortcuts 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backup ISDN BRI DBM 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Need to Do Before Using the Access Unit 1-3. . . . . . . . . . . . . . . . .
2User Interface
Interfaces to the T1 Frame Relay Access Unit 2-1. . . . . . . . . . . . . . . . . . . . . .
T1 Access Unit’s Faceplate 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Async Terminal User Interface 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Management 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Hierarchy 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Menu Screen 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Format Types 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Affects Screen Displays 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Work Areas 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Navigating the Screens 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyboard Keys 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Function Keys 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Interface 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting from a Menu 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting a Field 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making Input Selections 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switching Between Screen Work Areas 2-8. . . . . . . . . . . . . . . . . . . . . . . .

Contents
ii 9121-A2-GB20-00
June 1997
3Startup
Logging In 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logging Out 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting a Session 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ending a Session 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Displaying System Information
Displaying Identity Information 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Statuses 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Status Information 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System and Test Status Messages 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LMI Reported DLCIs Status 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PVC Connection Status 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM Interface Status 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Statistics 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Statistics Are Collected? 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Statistical Information 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Physical Performance Statistics 4-19. . . . . . . . . . . . . . . . . . . . . . .
Selecting T1 Network Statistical Intervals for Display 4-20. . . . . . . . . . . . .
Port Physical Performance Statistics 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . .
DBM Physical Performance Statistics 4-21. . . . . . . . . . . . . . . . . . . . . . . . . .
Frame Relay Performance Statistics 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . .
PVC Performance Statistics 4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing Performance Statistics 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Maintenance and Troubleshooting
LEDs 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T1 Access Unit 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network/DSX Interface 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTE Port 1 or 2 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASCII Alarm Messages 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Messages 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Error Messages 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Status Messages 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Last Cause Value Messages 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary
Index

iii
9121-A2-GB20-00 June 1997
About This Guide
Purpose and Intended Audience
This guide contains information needed to properly set up, access and operate
the T1 Frame Relay Access Unit. It is intended for equipment operators.
Document Organization
Section Description
Chapter 1 About the T1 Frame Relay Access Unit. Describes the
access unit’s functionality and features, and provides a
checklist of activities needed before using the unit.
Chapter 2
User Interface. Describes the user interface and how to
use it.
Chapter 3
Startup. Tells you how to log-in/out and how to start/end a
session.
Chapter 4
Displaying System Information . Tells you how to display
information about your system via the user interface, and
describes status and statistical information provided by the
access unit.
Chapter 5
Maintenance and Troubleshooting. Consolidates LED
indicators, ASCII alarm, error, and status messages; tells
you what they mean and what you can do about them.
Glossary Defines acronyms and terms used in this guide.
Index Lists key terms, acronyms, concepts, and sections in
alphabetical order.
A
Quick Reference is included with this guide, providing a summary of
configuration options and a pictorial view of the menu hierarchy for easy
navigation through the screens.

About This Guide
iv 9121-A2-GB20-00
June 1997
Product-Related Documents
Document
Number Document Title Purpose/Focus
4-691070 9028 Compression Unit,
Installation and User’s
Manual
Describes how to install, set up,
operate, and troubleshoot a 9028
compression unit, which provides
compression capability for the
T1 frame relay access unit.
9121-A2-GH30 T1 Frame Relay Access
Unit, Model 9120/9121,
Technical Reference
Provides an overview of the T1
access unit, its features, and its
functionality. It also describes typical
applications, management control
and IP addressing, setting up
(configuration), LEDs and alarm
interpretation, and security of the unit.
Provides reference appendices with
menus, configuration worksheets to
aid configuration, technical
specifications, pin assignments, and
an equipment list, as well as an
extensive glossary.
Provides supplemental MIB
descriptions, a user interface to MIB
cross-reference, and SNMP traps
support.
9000-A2-GN10 1-Slot Assembled Access
Unit, Installation Instructions Describes how to install a fully assembled 1-slot access unit.
Includes technical specifications.
9000-A2-GN11 1-Slot Access Unit,
Wall Mounting Kit,
Installation Instructions
Describes how to install the mounting
hardware with an access unit so the
1-slot assembled unit can be
mounted onto the wall. Includes
technical specifications.
9000-A2-GN13 Power Cord/Transformer
Installation Instructions Describes how to install the power cord and transformer for a 1-slot unit.
Includes technical specifications.
9000-A2-GN19 ISDN BRI Dial Backup
Module (DBM) Installation
Instructions
Describes how to install a DBM on a
NAM. Includes cabling, operation
verification, technical specifications,
and pin assignments.
9121-A2-GN10 T1 Frame Relay Network
Access Module (NAM)
Installation Instructions
Describes how to install a NAM in a
1-slot housing. Includes cabling,
operation verification, technical
specifications, and pin assignments.
9121-A2-GX40 912x Series T1 Access
Units, Safety and
Regulatory, Warranty and
Service Information
Provides safety and regulatory, as
well as warranty and service
information.

1-1
9121-A2-GB20-00 June 1997
About the Frame Relay
Access Unit 1
What Does the T1 Frame Relay Access Unit Do?
The T1 frame relay access unit provides an interface between the customer
premises equipment (CPE) and a T1 frame relay network to the public frame
relay network facilities.
The access unit provides a variety of features and capabilities which support:
Aggregated packet applications
Diagnostic functions
Device, test, and PVC monitoring
Security
Configuration shortcuts
Optional ISDN BRI DBM automatic backup
Automated configuration on Ports 1 and 2
Local or remote management using a menu-driven user interface, or through
SNMP (simple network management protocol) management
MIBs support: MIB II (RFC 1213 and RFC 1573), Frame Relay DTEs MIB
(RFC 1315), DS1/E1 MIB (RFC 1406), RS-232-Like MIB (RFC 1659), Frame
Relay Service MIB (RFC 1604), and Enterprise MIB
Data port rates:
Port-1 – 4.8, 9.6, 14.4, 16.8, 19.2, 24, 28.8, 38.4, 48, 56, 64, 128, 192, 256,
320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024, 1088, 1152,
1216, 1280, 1344, 1408, 1472, and 1536 Kbps
Port-2 – 64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832,
896, 960, 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, and 1536 Kbps
Refer to the
T1 Frame Relay Access Unit, Model 9120/9121, Technical
Reference
for information about the unit’s full capability and features.

About the Frame Relay Access Unit
1-2 9121-A2-GB20-00
June 1997
Configuration Shortcuts
Configuration shortcuts have been provided to simplify configuration of the
access unit and its features. Initially, this feature can be used to speed setup of
the access unit. Then, by selecting a frame relay discovery method, configuration
and cross-connection of DLCIs (and EDLCIs) can be performed within the access
unit on an automatic and continuing basis.
Configuration shortcuts provided by the access unit include:
Configuration templates – Configures the non-frame relay portion of the
access unit.
Based upon the template selected that best fits your application, one or two
ports can be automatically configured.
Frame relay discovery method – Configures the frame relay portion of the
access unit.
Based upon the local management interface (LMI) status response
messages, the access unit automatically “discovers” a network DLCI and
cross-connects the DLCI to a port DLCI provided the port is configured as the
user side. Management PVCs can also be “discovered” and cross-connected.
Backup ISDN BRI DBM
Available as an optional feature, the ISDN BRI DBM provides fast, easy, and
flexible backup to limit data loss when the physical circuit fails. With the DBM
installed, the best and fastest backup decisions are made automatically.
Backup capabilities provided when an ISDN BRI DBM is installed include:
Automatic backup when the circuit fails.
Automatic restoration when the circuit recovers.
Alternate backup destinations or paths.
Manual call control.

About the Frame Relay Access Unit
1-3
9121-A2-GB20-00 June 1997
What You Need to Do Before Using the Access Unit
Subscribe to Frame Relay service, with network DLCIs (data link connection
identifiers), CIR (committed information rate), excess burst size provided.
Modify network design to include access units.
Define IP addressing scheme, with an IP address assigned to the access
unit, and IP addresses and subnet masks added to configuration worksheets.
Install ISDN BRI DBM, if ordered.
Install access unit, ready to be configured.
Determine the configuration shortcuts to be used.
Complete configuration worksheets for configuring the access unit.

2-1
9121-A2-GB20-00 June 1997
User Interface 2
Interfaces to the T1 Frame Relay Access Unit
Your interfaces to the T1 frame relay access unit are the front panel LEDs, the
menu-driven user interface, and SNMP (simple network management protocol)
network management. These interfaces provide feedback and status for the
access unit and, if installed, the dial backup module (DBM).
This chapter tells you how to set up and navigate the menu-driven user interface.
T1 Access Unit’s Faceplate
The access unit’s faceplate includes 12 LEDs (light-emitting diodes). See
Chapter 5,
Maintenance and Troubleshooting , for an understanding of what each
LED indicates.
Async Terminal User Interface
Access to the easy to use, menu-driven interface is provided through an async
(asynchronous or other VT100-compatible) terminal, PC terminal emulation, or a
Telnet session. This guide focuses upon using this menu-driven user interface.
Network Management
Acting as an SNMP agent, the access unit supports external management by an
SNMP manager via industry-standard and enterprise-specific management
information base (MIB) objects. Refer to the
T1 Frame Relay Access Unit,
Model 9120/9121, Technical Reference
for supported MIB objects.

User Interface
2-2 9121-A2-GB20-00
June 1997
Menu Hierarchy
The menu hierarchy represents the organization of the access unit’s menus and
screens. Refer to the enclosed
Quick Reference for a pictorial view of the menu
hierarchy.
Main Menu Screen
Entry to all of the access unit’s tasks begins at the Main Menu screen, which has
five menus or branches.
Select . . . To . . .
Status View diagnostic tests, interfaces, PVC connections, and
statistics.
Test Select and cancel test for the access unit’s interfaces.
Configuration Display and edit the configuration options.
Configuration
Shortcuts Configure basic access unit setup automatically based upon a selected application.
Fill network and data port DLCI configuration options with
numeric settings automatically.
Control Control the user interface for call setup, device naming, login
administration, and downloading firmware. Also, to select the
port number for which status is reported on the LEDs, and to
initiate a power-on reset of the access unit.
NOTE:
The login’s access level appears at the top of the screen unless no security
has been set up.

User Interface
2-3
9121-A2-GB20-00 June 1997
Screen Format Types
Three types of screen formats are available on the async (asynchronous)
terminal.
Use screen format . . . To . . .
Menu selection Display a list of available functions for user selection.
(Refer to the enclosed Quick Reference for a pictorial view
of the menu hierarchy.)
Input Add or change information on a screen.
Underlines in the field value or selection indicate an input or
edit field.
Display Display configuration information and results from
performance and system-specific tests.
No underlines in the field value or selection indicate a
display-only field.
What Affects Screen Displays
What appears on the screens depends on:
Current configuration – How your network is currently configured.
Security access level – The security level set by the system administrator
for each user.
Data selection criteria – What you entered in previous screens.

User Interface
2-4 9121-A2-GB20-00
June 1997
Screen Work Areas
There are two user work areas:
Screen area – Where you input information into fields.
Screen function key area – Where you perform specific screen functions.
Below is a sample async (asynchronous) terminal interface screen.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
main/config/port/physical
Device Name: Node A Model:
xxxx
PORT- n PHYSICAL OPTIONS
Port Type: E530
Port Rate(Kbps): 256
Transmit Clock: Internal
Invert Transmit Clock: Disable
Port (DTE) Initiated Loopbacks: Disable
Control Leads Supported: Both
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Save
Select: Enable, Disable
Menu Path
Device Name
Screen
Function
Keys
Model Number
Screen Area
System
Messages
and Field
Values
Screen Format Description
Menu path Menu selections made to reach the current screen.
Device name Customer-assigned identification of the access unit.
Model xxxx Access unit’s model number (i.e., 9120).
Screen area Selection, display, and input fields for monitoring and
maintaining the access unit.
Screen function keys Specific functions that can be performed on the
screen.
System messages and field or
option values System-related information, valid settings for input fields, and System and Test Status messages.

User Interface
2-5
9121-A2-GB20-00 June 1997
Navigating the Screens
You can navigate the screens by:
Using keyboard keys.
Switching between the two screen work areas using screen function keys.
Keyboard Keys
Use the following keyboard keys to navigate within the screen area:
To . . . Press . . .
Move cursor between the screen area and
the screen function keys area Ctrl-a
Return to the previous screen Esc
Move cursor to the next field Right Arrow (on same screen row), or
Tab (on any screen row)
Move cursor to the previous field Left Arrow (on same screen row), or
Ctrl-k
Move cursor one position to the left or to the
last character of the previous field Backspace
Select the next valid value for the field Spacebar
Delete character that the cursor is on Delete (Del)
Move cursor up one field within a column on
the same screen Up Arrow or Ctrl-u
Move cursor down one field within a column
on the same screen Down Arrow or Ctrl-d
Move cursor one character to the right if in
edit mode Right Arrow or Ctrl-f
Move cursor one character to the left if in edit
mode Left Arrow or Ctrl-b
Redraw the screen display, clearing
information typed in but not yet entered Ctrl-l
Accept entry or display valid options on the
last row of the screen when pressed before
entering data or after entering invalid data
Return (Enter)

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Screen Function Keys
All screen function keys (located in the lower part of the screen; see example on
page 2-4) operate the same way (upper- or lowercase) throughout the screens.
These keys use the following conventions:
Select . . . For the screen
function . . . And press Return to . . .
M or m MainMenu Return to the Main Menu screen.
E or e Exit Terminate the async terminal session.
N or n New Enter new data.
O or o Modify Modify existing data.
L or l Delete Delete data.
S or s Save Save information.
R or r Refresh Update screen with current information.
V or v PVCs Display PVC statistics for the selected interface.
C or c ClrStats Clear network performance statistics and refresh the
screen.
U or u PgUp Display the previous page.
D or d PgDn Display the next page.

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Using the Interface
This section leads you through the basic operations of using the interface.
Selecting from a Menu
You select from a menu to get subsequent menus or screens so you can perform
desired tasks.
Procedure
To make a menu selection:
1. Tab or press the arrow keys to position the cursor on a menu selection. Each
menu selection is highlighted as you press the key to move the cursor from
position to position.
2. Press Return. The selected menu or screen appears.
3. Continue Steps 1 and 2 until you reach the screen you want.
Refer to the
Quick Reference to guide you through menu selections.
Selecting a Field
Once you reach the desired menu or screen, select a field to view, change, or
issue a command. Press the Tab or right arrow key to select a field within a
menu. The current setting or value appears to the right of the field.
Example:
To change the amount of time that a test will run before it is stopped from
10 minutes to 15 minutes:
Main Menu → Configuration → Load Configuration From: → Current
Configuration
→ General →Tab to Test Duration (min): 10 →
enter
15 →press Return
Example:
Selecting Control from the Main Menu, selecting Administer Logins, then entering
or changing security information.
Main Menu → Control → Administer Logins → [New/Delete]

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Making Input Selections
You can enter information into a field in one of several ways. Once the field is
selected, you can:
HManually type in (enter) the field value or command.
Example:
Entering bjk as a user’s Login ID on the Administer Logins screen (from the
Control menu/branch).
HType in (enter) the first letter(s) of a field value or command, using the access
unit’s character-matching feature.
Example:
When configuring a port’s physical characteristics with the Control Leads
Supported configuration option/field selected (possible settings include
Disable, DTR, RTS, and Both), entering d or D displays the first value starting
with d – Disable. In this example, entering dt or DT would display DTR as the
selection.
HSwitch from the screen area to the screen function area and select or enter
the designated screen function key. See
Switching Between Screen Work
Areas
below for an example.
If a field is blank and the System Messages and Field Values screen area
displays valid selections, press the spacebar; the first valid setting for the field
appears. Continue pressing the spacebar to scroll through other possible
settings.
Switching Between Screen Work Areas
Using Ctrl-a allows you to switch between the screen area and screen function
keys area (see page 2-4).
"Procedure
To access the screen function area:
1. Press Ctrl-a to switch from the screen area to the screen function keys area.
2. Select either the function’s designated (underlined) character or Tab to the
desired function key.
Example:
To save a configuration option change, enter s or S (Save).
3. Press Return. The function is performed.
4. To return to the screen area, press Ctrl-a again.