Changes and enhancements to the product and to the information herein will be documented and issued as a new release.
Warranty, Sales, Service, and Training Information
Contact your local sales representative, service representative, or distributor directly for any help needed. For additional information
concerning warranty, sales, service, repair, installation, documentation, training, distributor locations, or Paradyne worldwide office
locations, use one of the following methods:
• Internet: Visit the Paradyne World Wide Web site at www.paradyne.com. (Be sure to register your warranty there. Select
Service & Support → Warranty Registration.)
• Telephone: Call our automated system to receive current information by fax or to speak with a company representative.
— Within the U.S.A., call 1-800-870-2221
— Outside the U.S.A., call 1-727-530-2340
Trademarks
All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered service
marks of their respective owners.
Document Feedback
We welcome your comments and suggestions about this document. Please mail them to Technical Publications, Paradyne Corporation,
8545 126th Ave. N., Largo, FL 33773, or send e-mail to userdoc@paradyne.com. Include the number and title of this document in
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COPYRIGHT 1999 Paradyne Corporation. All rights reserved.
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.
AMarch 19993163-A2-GB20-10
Page 3
!
Important Safety Instructions
1.Read and follow all warning notices and instructions marked on the product or included in the
manual.
2.When an ac power source is used, 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. T o 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.
Important Instructions
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 may be 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.Input power to the ac voltage configuration of this product must be provided by a UL-listed or
CSA-certified power source with a Class 2 or Limited Power Source (LPS) output. Input
power to the dc voltage configurations of this product must be provided by a National Electric
Code (NEC) or a Canadian Electric Code (CEC) Class 2 circuit.
10. 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 the 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 même type. Mettre au rebut les batteries
usagées conformément aux instructions du fabricant.
B3163-A2-GB20-10March 1999
Page 4
ACCULINK 3163 DSU/CSU
!
Warnings
11. 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.
THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPL Y 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 T O THE EQUIPMENT UNLESS THE CHANGES OR MODIFICA TIONS ARE EXPRESSL Y
APPROVED BY PARADYNE.
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 RÉGLEMENT SUR LE
MATÉRIEL BROUILLEUR DU CANADA.
CMarch 19993163-A2-GB20-10
Page 5
Class 1 ITE Notice for Japan
This is a Class 1 product based on the standard of the Voluntary Control Council for interference
by Information T echnology Equipment (VCCI). If this equipment is used in a domestic
environment, radio disturbance may arise. When such trouble occurs, the user may be required to
take corrective actions.
This user’s guide contains installation, operation, and
maintenance information for the ACCULINK 3163 Data
Service Unit (DSU)/Channel Service Unit (CSU).
Document Summary
SectionDescription
Chapter 1Introduction. Describes the features
of the DSU/CSU.
Chapter 2Installation. Explains how to install
the DSU/CSU.
Chapter 3Operation. Provides instructions for
using the front panel, changing
configuration options, establishing
security , and using the integral
modem.
Chapter 4Maintenance. Explains how to obtain
information about the status and
performance of the DSU/CSU, how
to troubleshoot problems, and how to
run tests.
Appendix AFront Panel Menu. Contains a menu
tree showing all the main front panel
functions.
Appendix BTechnical Specifications. Contains a
table with the specifications of the
DSU/CSU.
Appendix CConfiguration Options. Lists and
explains the configuration options.
Appendix DPin Assignments. Describes the pin
assignments for connectors used with
the DSU/CSU.
Appendix EIP Network Addressing Scenarios.
Shows the use of IP addressing in
sample networks.
Appendix FFront Panel Emulation. Explains the
use of the optional front panel
emulation software.
Appendix GAsynchronous Terminal Interface
Operation. Describes the function
and use of the Asynchronous
T erminal Interface (ATI).
Appendix HEquipment List. Lists feature
numbers for equipment related to the
DSU/CSU.
GlossaryExplains terms and abbreviations
used in the text.
IndexLists major topics in the text.
iii3163-A2-GB20-10March 1999
Page 10
ACCULINK 3163 DSU/CSU
Related Documents
3000-A2-GA31COMSPHERE 3000 Series
Carrier Installation Manual
3000-A2-GB41COMSPHERE –48 VDC
Central Office Power Unit
Installation Guide
3160-A2-GB21ACCULINK 316x Data Service
Unit/Channel Service Unit
Operator’s Guide
Contact your sales or service representative to order
additional product documentation.
Paradyne documents are also available on the World
Wide Web at:
http://www .paradyne.com
Select Service & Support → Technical Manuals
Reference Documents
• AT&T Technical Reference 54016
• AT&T Technical Reference 62411
• ANSI T1.403-1989
• Industry Canada CS-03
• CSA-22.2 No. 950
• Industry Canada (ICES)-003
• FCC Part 15
• FCC Part 68
• UL 1950
• Management Information Base for Network
Management of TCP/IP-Based Internets:MIBII.
RFC 1213, March 1991
• Definitions of Managed Objects for the DS1 and E1
The DSU/CSU acts as an interface between the T1
digital network and the customer premises equipment,
converting signals received from the DTE (Data T erminal
Equipment) to bipolar signals that can be transmitted over
T1 lines. Typical applications include shared access to
network-based services, Local Area Network (LAN)/Wide
Area Network (WAN) interconnection, and fractional T1
network applications.
In addition to the T1 network interface,
the Model 3163 provides one synchronous data port.
Features
The Model 3163 DSU/CSU optimizes network
performance with a wide range of features such as the
following:
• Software configuration menu displayed via a liquid
crystal display (LCD) to permit quick and easy
operation, and elimination of complicated hardware
strapping.
• T elnet access for remote async terminal operations.
1-13163-A2-GB20-10March 1999
Page 12
ACCULINK 3163 DSU/CSU
Alarm Message Capability
The DSU/CSU can be attached, either locally or
remotely , to an ASCII terminal or printer to display or
print alarm messages. Alarms can also be displayed on a
PC that is using a terminal emulation package.
Front Panel Emulation
The 3163 DSU/CSU offers functionality through Front
Panel Emulation software that is similar to that provided
by the DSU/CSU front panel. The functionality of the
front panel is available by clicking on the function keys
with the mouse rather than by pressing keys from the
actual front panel.
Integral Modem
The 3163 DSU/CSU contain an integral low-speed
(2400 bps), V.22bis dial modem that enables
communication with remote devices such as another 316x
DSU/CSU, an ASCII terminal or printer, or a PC running
the 3100 Series Front Panel Emulation software.
Asynchronous Terminal Interface Support
The 3163 DSU/CSU can be configured and managed
from an asynchronous (async) terminal. The async
terminal’s full screen display uses a menu hierarchy
similar to the DSU/CSU’s front panel. You can perform
device management and configuration operations as if you
are using the DSU/CSU’s front panel, but you do not have
the limitation of the 2-line, 16-character LCD.
Telnet Access
Remote async terminal operations can be performed
using T elnet access. Telnet is a Transmission Control
Protocol/Internet Protocol (TCP/IP) service that supports
a virtual terminal interface.
1-2March 19993163-A2-GB20-10
Page 13
Introduction
Physical Description
Model 3163 DSU/CSU Front Panel
The standalone DSU/CSU front panel contains,
• One 2-line, 16-alphanumeric-character-per-line
liquid crystal display (LCD)
ACCULINK
NET
MON
In
3163
Out
LCD
F1F2F3
OK
FAIL TEST SIG OOF ALRM
• One 7-button keypad (three Function and four
directional keys)
• T welve light-emitting diodes (LEDs)
• T wo test jacks
The front panels is shown in Figure 1-1.
EER
DTR TXDCTS RTS
NETWORK
RXD
PORT
Figure 1-1. 3163 DSU/CSU Front Panel
98-15940
1-33163-A2-GB20-10March 1999
Page 14
ACCULINK 3163 DSU/CSU
Model 3163 DSU/CSU Rear Panel
The 3163 DSU/CSU rear panel contains the connectors
required for the operation of the DSU/CSU (Figure 1-2).
The connectors and their functions are listed in T able 1-1.
POWER
NEC
CLASS 2
INPUT
PORT 1
CAUTION:
COM PORT MODEM
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
NETWORK
495-14565-01
Figure 1-2. 3163 DSU/CSU Rear Panel
Table 1-1
Model 3163 DSU/CSU Rear Panel Connectors
NameFunction
POWERSupplies power to the DSU/CSU by providing an attachment for the ac power
module or the optional dc power cable (+24 or –48 Vdc).
COM PORTProvides access to a locally connected PC, ASCII terminal or printer, or async
terminal interface.
MODEMProvides a connection to the integral modem for access to a remotely connected
PC, ASCII terminal or printer, or async terminal interface.
NETWORKProvides access to the T1 network.
PORT 1Used to connect the customer’s synchronous data DTE to the DSU/CSU.
This chapter contains information for installing your
standalone DSU/CSU. It includes application examples,
cabling, and power-up information.
Application Examples
The DSU/CSU acts as an interface between the T1
digital network and the customer’s equipment.
The DSU/CSU is connected to the customer’s
equipment through the synchronous data port (PORT 1). It
is connected to the T1 digital network through the
network interface. Some common applications for the
DSU/CSU are:
• Point-to-Point LAN interconnection (Figure 2-1).
Read and follow all warning notices and instructions
marked on the DSU/CSU or included in this guide.
For a complete listing of the safety instructions, see the
Important Safety Instructions section at the beginning of
this guide.
HANDLING PRECAUTIONS
FOR
ST ATIC-SENSITIVE DEVICES
This product is designed to protect
sensitive components from damage
due to electrostatic discharge (ESD)
during normal operation. When
performing installation procedures,
however, take proper static control
precautions to prevent damage to
equipment. If you are not sure of the
proper static control precautions,
contact your nearest sales or service
representative.
Optional Power Sources
The DSU/CSU is typically powered by the ac power
module. Use the following procedures only if you want
to use an optional dc power source.
Using the optional dc power cable, the DSU/CSU is
capable of operating on either a +24 Vdc power source,
–48 Vdc single source battery, or –48 Vdc redundant
source batteries (for power backup). T o use dc power,
choose one of the following power supply types.
Installing the +24 Vdc Power Supply
T o install the DSU/CSU using a +24 Vdc power
supply, refer to Figure 2-3 and use the following
procedure.
" Procedure
T o install the +24 Vdc power supply:
1. Connect the green wire to a suitable ground.
2. Connect the white wire to the +24 Vdc return.
DSU/CSU POWER
PLUG
1
2
3
4
5
6
Figure 2-3. +24 Vdc Power Supply Pinouts
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
3. Connect the orange wire to the +24 Vdc source.
4. Cut the black, red, and blue wires off at the outer
insulation.
5. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
X
X
GROUND
+24 VDC RETURN
+24 VDC SOURCE
X
99-14298-02
2-33163-A2-GB20-10March 1999
Page 18
ACCULINK 3163 DSU/CSU
Installing the Single –48 Vdc Power Supply
T o install the DSU/CSU using a single source –48 Vdc
power supply, refer to Figure 2-4 and use the following
procedure.
" Procedure
T o install the –48 Vdc single source power supply:
1. Connect the black and red wires to the –48 Vdc
return source.
DSU/CSU POWER
PLUG
1
2
3
4
5
6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
2. Connect the green wire to a suitable ground.
3. Connect the orange and blue wires to the –48 Vdc
input source.
4. Cut the white wire off at the outer insulation.
5. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
–48 VDC RETURN
GROUND
X
–48 VDC INPUT
99-14299-02
Figure 2-4. –48 Vdc Single Source Power Supply Pinouts
2-4March 19993163-A2-GB20-10
Page 19
Installation
Installing the Redundant –48 Vdc Power
Supply
T o install the DSU/CSU using a redundant –48 Vdc
power supply, refer to Figure 2-5 and use the following
procedure.
" Procedure
T o install the redundant –48 Vdc power supply:
1. Connect the black wire to the –48 Vdc return
source B.
2. Connect the red wire to the –48 Vdc return
source A.
DSU/CSU POWER
PLUG
1
2
3
4
5
6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
3. Connect the green wire to a suitable ground.
4. Connect the orange wire to the –48 Vdc input
source B.
5. Connect the blue wire to the –48 Vdc input
source A.
6. Cut the white wire off at the outer insulation.
7. Plug the power connector into the DSU/CSU.
TO CUSTOMER-SUPPLIED BATTERY
–48 VDC RETURN B
–48 VDC RETURN A
GROUND
X
–48 VDC INPUT B
–48 VDC INPUT A
99-14300-02
Figure 2-5. –48 Vdc Redundant Source Power Supply Pinouts
2-53163-A2-GB20-10March 1999
Page 20
ACCULINK 3163 DSU/CSU
Cabling Examples
The DSU/CSU is supplied with an ac power module
and a VF cable for the integral modem.
Modem
Terminal
Modem
Port
COM PORT MODEM
PORT 1
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
Network
Port
NETWORK
DSU/CSU
POWER
NEC
COM
Port
CAUTION:
3163
PSTN
Optional cables are described in Appendix D, Pin
Assignments.
Figure 2-6 illustrates some cabling examples.
Modem
Modem
Port
3163 DSU/CSU
Network
Port
or
PC
Front
Panel
Power
Serial
Port
T1 or Serial Connections
Dial Connections
T1 Network
3163
DSU/CSU
Power
Figure 2-6. Cabling Examples
POWER
COM
Port
COM PORT MODEM
PORT 1
NEC
CAUTION:
AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR T1 NETWORK
or
Network
Port
NETWORK
Terminal
98-15941
2-6March 19993163-A2-GB20-10
Page 21
Installation
Power-Up Self-Test
After you connect the DSU/CSU to a power source, the
unit performs the power-up self-test to ensure that it is in
good working order. The DSU/CSU performs this test on
itself upon power-up or after a device reset, unless it has
been disabled by the Self-T est configuration option (see
Appendix C, Configuration Options).
The self-test includes a basic processor test, a limited
memory test, a code checksum test, and basic verification
tests of the internal components. The front panel LCD
displays the progress and pass/fail status of these
power-up tests.
" Procedure
The power-up self-test consists of the following steps:
1. Once the DSU/CSU is plugged in, the In Progress
screen appears and the Fail LED blinks ON and
Off continuously.
Self-Test:
In Progress
If the self-test fails, the Failed screen appears for
five seconds. The Fail LED lights, and an
eight-digit failure code (xxxxxxxx) is displayed for
use by service personnel to determine the cause of
the self-test failure. The DSU/CSU continues to
try to operate. If you are in doubt about the results
of the self-test, use the Self-T est Health command
to display the status of this test (see the Self-Test
Health section in Chapter 4, Maintenance).
Self-Test:
Failed
F1
xxxxxxxx
F2
F3
4. The top-level menu screen appears.
DSU ESF
StatTestCnfig
F1
F2
F3
F1
F2
F3
2. All the LEDs then start to flash simultaneously in
the pattern twice ON, then Off. Then, the LCD
begins to flash characters and numbers in the same
pattern, alternating with the flashing LEDs.
3. If the self-test is successful, the Passed screen
appears for one second, the Fail LED turns Off
and the OK LED lights.
This chapter contains information for operating your
DSU/CSU. It includes a description of the front panel and
sample procedures for configuring the DSU/CSU.
ACCULINK
Using the Front Panel
The standalone DSU/CSU front panel (Figure 3-1)
consists of an LCD, a keypad, test jacks, and 12 LEDs.
NOTE
You can display a graphical
representation of the DSU/CSU
front panel on an attached PC
(see Appendix F,
Emulation
LCD
F1F2F3
).
Front Panel
3163
NET
MON
In
Out
OK
FAIL TEST SIG OOF ALRM
NETWORK
Figure 3-1. Standalone DSU/CSU Front Panel
EER
DTR TXDCTS RTS
RXD
PORT
98-15940
3-2March 19993163-A2-GB20-10
Page 25
Operation
LCD
The LCD (Figure 3-2) displays two types of data:
• Messages such as alarms, command/test
completion, and action in progress
• Front panel menu tree information (see
Appendix A, Front Panel Menu)
F1F2
Figure 3-2. LCD
The LCD displays status messages as requested via the
Device Health and Status branch of the front panel menu
(see the Device Health and Status section in Chapter 4,
Maintenance). In addition, the highest level status
message appears on the front panel automatically if no
front panel action has occurred at the DSU/CSU for the
past five minutes.
The LCD also lists commands, configuration options,
and test results. In most cases, the top line shows the
command or option name and default value, while the
second line displays options and responses. When a
response is required, select from the options displayed
directly above the Function keys (F1, F2, F3); make your
choice by pressing the corresponding Function key.
F3
Keypad
The 7-button keypad (Figure 3-3) enables you to
navigate through the menu tree and select choices
presented on the second line of the LCD.
F1F2
Figure 3-3. Keypad
Use the
key to move up the menu.
F1F2
Use the key to exit any part of the menu in which
you may be operating. You immediately return to the
top-level menu screen shown on the front panel menu (see
Appendix A, Front Panel Menu).
F3
F3
F1F2
F3
Use the Function (F1, F2, F3) keys to make selections
from the choices presented on the second line of the LCD.
When this line presents choices, it is generally divided
into three sections, each displayed directly above one of
the Function keys. When your choice appears above one
of the Function keys, press that key to select that choice.
F1F2
F3
3-33163-A2-GB20-10March 1999
Page 26
ACCULINK 3163 DSU/CSU
The scroll keys ( and ) serve one of two functions,
depending on whether a menu screen or a data entry
screen appears on the front panel.
For data entry screens, the
key scrolls one
character to the left while the key scrolls one
character to the right.
For menu screens, the key scrolls to the previous
menu choice while the
key scrolls to the next menu
choice.
F1F2
F3
If a choice is available to the left of the screen, the
character ← appears on the top line. If a choice is
available to the right of the screen, the → character
appears on the top line. If choices are available to both the
right and the left of the screen, two arrows appear ( ).
The arrows indicate that you must use the scroll keys to
bring the additional options onto the screen.
LEDs
There are twelve LEDs on the DSU/CSU front panel.
OKTEST SIG OOF ALRM
NETWORK
Figure 3-5. DSU/CSU LEDs
A green LED indicates normal operation. A yellow
LED indicates activity for the data port. Conditions are
sampled every tenth of a second.
The twelve front panel LEDs are grouped into four
sections to indicate the status of the:
• System (T able 3-1)
• Network Interface (T able 3-2)
• Data Ports (T able 3-3)
TXDEERFAILDTRRXD CTS RTS
PORT
98-15972
Test Jacks
T est jacks are located on the DSU/CSU front panel
(Figure 3-4). These are described in the Test Jacks section
in Chapter 4, Maintenance.
NET
MON
In
Out
98-15942
Figure 3-4. Test Jacks
3-4March 19993163-A2-GB20-10
Page 27
Table 3-1
System LEDs
Operation
Name
OKGreenIndicates the current operational state of the DSU/CSU.
FAILYellowIndicates a system failure or a self-test.
TESTYellowA system test is in progress.
ColorMeaning
ON:
OFF:
BLINKING:
ON:
OFF:
BLINKING
ON:
OFF:
The DSU/CSU is operational and has power.
The DSU/CSU is performing a power-up self-test or a system failure
has occurred.
A software download is in progress.
A device error/fault is detected or a reset has just occurred.
No system failures are detected.
:A self-test is in progress.
A loopback or pattern test has been initiated either locally , by the
network, or externally .
No tests are active.
Table 3-2
Network Interface LEDs
NameColorMeaning
SIGGreenMonitors the signal being received from the network.
ON:
OFF:
OOFYellowMonitors Out Of Frame (OOF) conditions on the received network signal.
ON
:At least one OOF was detected on the signal during the sampling
OFF:
ALRMYellowIndicates whether an alarm condition exists on the received network signal.
ON:
OFF:
EERYellowIndicates the Excessive Error Rate (EER) has been exceeded on the network interface.
NOTE: This LED is only valid when ESF framing is being used.
ON:
OFF:
A recoverable signal is being received from the network.
The signal cannot be recovered from the network (a Loss of Signal
condition exists).
period.
No OOFs were detected on the signal during the sampling period.
An alarm condition (LOS, LOF, EER, Yellow, AIS) exists on the
received network signal. Use the Device Health and Status
command to determine the alarm type.
No alarm condition exists on the network interface signal.
The EER has been exceeded on the network interface.
The EER has not been exceeded on the network interface.
3-53163-A2-GB20-10March 1999
Page 28
ACCULINK 3163 DSU/CSU
Table 3-3
Data Port LEDs
Name
DTRGreenMonitors the state of interchange circuit CD (CCITT 108/1, /2) – Data Terminal Ready
TXDYellowMonitors activity on interchange circuit BA (CCITT 103) – Transmitted Data. This is the
RXDYellowMonitors activity on interchange circuit BB (CCITT 104) – Received Data. This is data
CTSYellowMonitors the state of interchange circuit CB (CCITT 106) – Clear-to-Send sent to the
ColorMeaning
received from the synchronous data DTE.
ON:
OFF:
data sent from the synchronous data DTE to the data port on the DSU/CSU.
ON:
OFF:
CYCLING:
sent to the synchronous data DTE from the data port on the DSU/CSU.
ON:
OFF:
CYCLING:
synchronous data DTE.
ON:
OFF:
DTR is being asserted by the synchronous data DTE.
DTR is not being asserted.
Ones are being received from the synchronous data DTE.
Zeros are being received from the synchronous data DTE.
Both ones and zeros are being received from the synchronous data
DTE.
Ones are being sent to the synchronous data DTE.
Zeros are being sent to the synchronous data DTE.
Both ones and zeros are being sent to the synchronous data DTE.
CTS is being asserted by the DSU/CSU.
CTS is not being asserted.
RTSYellowMonitors the state of interchange circuit CA (CCITT 105) – Request-to-Send received
from the synchronous data DTE.
ON:
OFF:
RTS is being asserted by the synchronous data DTE.
RTS is not being asserted.
3-6March 19993163-A2-GB20-10
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Operation
Displaying Unit Identity
The identity of the DSU/CSU (serial number, model
number, software revision level, hardware revision level,
and customer identification) is available through the
Status branch of the front panel menu (see Appendix A,
Front Panel Menu).
The customer identification is the only identity number
you can change.
" Procedure
T o display the DSU/CSU’s identity (ID):
1. From the top-level menu screen, select Stat.
DSU ESF
StatTestCnfig
F1
F2
2. From the Status screen, press the key until the
ID selection appears on the screen.
3. Select ID.
F3
4. The following screens appear in the order listed
each time you press the key.
Identity:
Ser=
xxxxxxx
F1
F2
F3
Identity:
Mod=
xxxx-xx-xxx
F1
F2
F3
Identity:
Cust ID=
F1
xxxxxxxx
F2
F3
Identity:
SRev=
F1
xx.xx.xx
F2
F3
Status:
TStatLEDID
F1
F2
F3
Identity:
CCA=
xxxx-xxx
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Setting Customer
Identification
The customer identification is the only identity number
you can change. It is used to uniquely identify the
DSU/CSU.
" Procedure
T o change the customer identification (CID):
1. From the top-level menu, press the key until
the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, press the key until
the CID selection appears on the screen.
4. Select CID.
Control:
ResetCID Passwd
Displaying LED Conditions
The same conditions monitored by the front panel
LEDs can also be monitored by the LED command. This
command is most useful when the DSU/CSU is being
accessed remotely (see Appendix F,Front Panel
Emulation). When using Front Panel Emulation, no LEDs
are shown on the PC’s screen; you must use the Stat
command procedure described below to get LED
information.
NOTE
The following procedure is an
example only. Screen displays
may vary depending on the
model of the DSU/CSU.
" Procedure
T o display LED conditions on the front panel screen:
1. From the top-level menu screen, select Stat.
F1
F2
F3
5. Use the and keys to position the cursor
under the desired character. You must enter a
character before the
moves the cursor to the
next space to the right.
CustID:
xxxxxxxx
UpDownSave
F1
F2
F3
6. Enter the desired ID. Press F1 (Up) and F2
(Down) to scroll up and down through the valid
characters/numbers for the customer ID. Valid
characters are 0 through 9, #, -, ., /, A to Z, and
blank space. Press F3 (Save) to save the ID.
2. From the Status screen, press the
LED selection appears on the screen.
3. From the Status screen, select LED.
Status:
PerfTStatLED
F1
F2
F3
key until the
3-8March 19993163-A2-GB20-10
Page 31
Operation
4. From the Select LEDs screen, press the Function
key that corresponds to T1 interface or the data
port for which you want to display LEDs. Use the
scroll keys, if necessary.
Select LEDs:
T1Prt1
F1
F2
F3
If you chose T1, the LED Display screen lists the
LED signals, two at a time, on the second line. A
vertical bar at the left of the LED name indicates
the condition is ON, while an underscore indicates
the condition is Off.
LED Display:
_Test_NetSig
F1
F2
F3
If you chose Prt1, the Port 1 LEDs screen lists the
LED signals, two at a time, on the second line. A
vertical bar at the left of the LED name indicates
the condition is ON, while an underscore indicates
the condition is Off.
Port 1 LEDs:
_DTR _TXD
F1
F2
F3
5. Use the and keys to scroll LED names
onto the screen.
Changing Configuration
Options
The DSU/CSU is an intelligent device that displays
only valid options for the current configuration.
Therefore, you are only presented with menu choices that
are consistent with the current configuration and
operational state of the DSU/CSU; invalid combinations
of configuration options do not appear. Be aware that
although all options are shown in this guide, what you see
on your DSU/CSU varies with your configuration.
The DSU/CSU offers configuration options located in
the following memory areas:
• Active (Activ). This is the configuration option set
currently active for the DSU/CSU. Before a
configuration option set becomes active for the
DSU/CSU, you must save the set to the Active area.
When the DSU/CSU is shipped from the factory,
the Active configuration option set is identical to
the Factory set. This area can be written to and
controls the current operation of the device.
• Customer 1 (Cust1). This is the first of two sets of
customer-defined configuration options. This area
can be written to.
• Customer 2 (Cust2). This is the second of two sets
of customer-defined configuration options. This
area can be written to.
• Factory 1 (Fact1). This is a set of configuration
options preset at the factory. This set is determined
by what is considered to be the most common
configuration used in the DSU/CSU market.
Factory 1 options are read-only.
• Factory 2 (Fact2). This is a set of configuration
options preset at the factory. This set is determined
by what is considered to be the second most
common configuration used in the DSU/CSU
market. Factory 2 options are read-only.
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ACCULINK 3163 DSU/CSU
The configuration options are divided into functional
groups. Appendix C contains a list of the configuration
options and defaults. These groups are:
• Port
• Network Interface
• Channel
• General
• User Interface
• Alarm
• Management
The DSU/CSU arrives with two preset factory default
configuration settings. These settings are based on the
following:
• Factory 1 – ESF framing format with B8ZS line
coding format for the network interface. The data
port is unassigned.
• Factory 2 – D4 framing format with AMI line
coding format for the network interface. The data
port is unassigned.
Displaying/Editing Configuration Options
" Procedure
T o display/edit configuration options:
1. From the top-level menu screen, select Cnfig.
DSU ESF
StatTestCnfig
F1
F2
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
Load from:
ActivCust1
F1
F2
F3
F3
If neither of the factory default settings support your
network’s configuration, you can customize the
configuration options to better suit your application.
Use the Configuration (Cnfig) branch of the front panel
menu tree to display or change DSU/CSU configuration
options (see Appendix C, Configuration Options).
3. Select Edit.
Choose Funct:
EditSave
F1
F2
F3
3-10March 19993163-A2-GB20-10
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Operation
4. From the Edit screen, select the functional group
you want to edit by pressing the appropriate
Function key. Use the scroll keys, if necessary.
(The User selection is shown as an example only.)
Edit:
ChanGenUser
F1
F2
F3
The configuration options for the selected
functional group appear on the front panel one
option at a time. The option name appears on
Line 1 with the current value next to it. T o reach
other options, use the Next and Previous selections
to scroll forward and backward through the group
of options.
Self-Test:Enable
NextDisable
F1
F2
F3
Saving Edit Changes
Save edit changes to the Active area when you want
those changes to take effect immediately. Save edit
changes to the Customer area when you want to overwrite
the existing Customer configuration options and store
these changes for future use.
NOTE
If you attempt to exit the Edit
function after making changes
without performing a Save, the
DSU/CSU prompts you with SaveOptions? Choose Yes or No.
" Procedure
T o save edit changes:
1. From the Choose Funct screen (one level above
the Edit screen, two levels below the top-level
menu screen), select Save.
5. Press the appropriate Function key to choose
another value. Use the scroll keys, if necessary.
6. Use the Save procedure to save your changes to
the Active or Customer area.
Choose Funct:
EditSave
F1
F2
F3
2. Choose whether you want to save to the Active,
Customer 1, or Customer 2 area. Use the scroll
keys, if necessary.
Save Edit to:
ActivCust1
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Configuring the DSU/CSU for
Telnet Access
T o configure the DSU/CSU for Telnet access,
• Enable the T elnet server within the DSU/CSU (see
Appendix C, Configuration Options).
• Select and configure the port that provides the link
to the T elnet system.
• Set the Internet Protocol (IP) address and subnet
mask needed to access the DSU/CSU (see
Appendix E, IP Network Addressing Scenarios).
• Select the link layer protocol (PPP or SLIP) for the
port that provides the link to the T elnet system.
• Specify the T elnet password, if desired (see
Appendix C, Configuration Options).
Selecting the Port
The Telnet device or network device can be directly
connected to the communications (COM) port. An
external LAN Adapter can be connected to the COM port
to provide Ethernet or T oken Ring connectivity. Use the
MODEM port when accessing the DSU/CSU through a
dial-up connection.
The COM port can support either synchronous or
asynchronous PPP, or asynchronous SLIP at data rates of
up to 38,400 bps. The MODEM port can support either
synchronous or asynchronous PPP, or asynchronous SLIP
at data rates of up to 2400 bps.
The example shown below assumes that the COM port
is being used as the link to the T elnet system.
" Procedure
T o select the COM port as the Telnet link:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
User selection appears on the screen.
5. Select User.
Edit:
ChanGenUser
F1
F2
6. Press F1 (Next) until the Com Use configuration
option appears.
7. Select Mgmt to configure the COM port as the
T elnet link.
key until the
F3
Com Use:
NextMgmtASCII
F1
3-12March 19993163-A2-GB20-10
F2
F3
Page 35
Operation
Setting the IP Address
The IP address is the address used by the T elnet system
to access the DSU/CSU (see Appendix E, IP Network
Addressing Scenarios). For DSU/CSUs using PPP, the IP
address can be negotiated if the network device (e.g. a
router) supports such negotiation. The IP address is
composed of four fields with three digits per field
(xxx.xxx.xxx.xxx).
The IP address is set for the MODEM port or the COM
port, depending on which one has been chosen as the
T elnet communication link. The example below assumes
that an IP address of 010.155.111.222 is being set for the
COM port. You can use the same principles to assign any
value (between 000 and 255 for each digit field) to the
modem port.
" Procedure
T o assign an IP address to the COM port:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
Mgmt selection appears on the screen.
key until the
7. Press F1 (Next) until the Com IP Adr
configuration option appears.
NOTE
Steps 8 and 9 describe the
process for entering an IP
address. This process applies to
any IP address.
8. Press F2 (Edit) to edit the IP address. You have the
option of using F3 (Clear) to reset the IP address
to the factory default 000.000.000.000.
Com IP Adr:
NextEditClear
F1
F2
F3
9. Use the and keys to position the cursor
under the digit you want to change. Press F1 (Up)
to increment the digit or F2 (Down) to decrement
the digit. In this example, you would press
once to place the cursor under the middle digit in
the first digit field, then press F1 (Up) once to
change the 0 to a 1. Continue in this manner to
change the other digits.
5. Select Mgmt.
Edit:
UserAlarm Mgmt
F1
F2
F3
6. From the Mgmt Config screen, select Gen.
Mgmt Config:
Gen
F1
F2
F3
000.000.000.000
UpDownSave
F1
F2
F3
10. When you are through changing the IP address,
you must press F3 (Save) to save the value.
Otherwise, the original value will be retained.
010.155.111.222
UpDownSave
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Selecting the Link Layer Protocol
T wo link layer protocols, Point-to-Point Protocol (PPP)
and Serial Line Internet Protocol (SLIP), are supported for
connection to an external T elnet device or network device
(e.g. a router). PPP can be used for synchronous or
asynchronous operation. SLIP can be used for
asynchronous operation only.
The standalone DSU/CSU implementation of PPP
supports the following:
• Full negotiation of PPP’s Link Control Protocol
(LCP).
• Active negotiation of LCP when the connection is
established.
• Maximum Request Unit (MRU) sizes up to
1500 bytes, but the DSU/CSU will attempt to
negotiate down to 500 bytes.
• The DSU/CSU provides a unique LCP magic
number derived from the unit serial number and the
elapsed time.
• Full negotiation of escape characters.
" Procedure
T o select the link layer protocol:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
Mgmt selection appears on the screen.
5. Select Mgmt.
Edit:
UserAlarm Mgmt
F1
F2
key until the
F3
The DSU/CSU implementation of PPP does not
support Link Quality Reports (LQR), compression,
encryption, Password Authentication Protocol (PAP) or
Challenge Handshake Authentication Protocol (CHAP).
The DSU/CSU implementation of SLIP supports a
fixed MRU size of 1006 bytes.
Before selecting the protocol, you must first select the
port to be used as the communications link. Refer to the
Selecting the Portsection on page 3-12. This example
assumes that the COM port is being used as the
communications link.
6. From the Mgmt Config screen, select Gen.
Mgmt Config:
Gen
F1
F2
F3
7. Press F1 (Next) until the Com Link configuration
option appears.
8. Press F2 (PPP) or F3 (SLIP).
Com Link:
NextPPPSLIP
F1
F2
F3
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Operation
ACAMI
Configuring DS0 Channels
The DSU/CSU provides channel configuration options
that allow you to do the following:
• Display the DS0 assignments for the network and
data port interfaces.
• Allocate DS0 channels on the network interface to
the data port.
• Clear (deallocate) all DS0 channels from the
network or data port interface.
T o allocate DS0 channels, begin by defining the logical
channel configuration for the network interface, and then
Port 1, if desired.
Blank configuration worksheets are provided at the
back of Appendix C, Configuration Options. To complete
the configuration worksheets for DS0 channel allocation:
1. Using the worksheet shown in Figure 3-6, circle
the configuration options needed to implement the
logical channel configuration.
2. Once you have completed the worksheet, enter
this information using the procedures in the
Use the Display command (in the Channel
Configuration branch) to view how the DS0 channels are
currently allocated.
Line 1 of the display shows the 24 channels of the
selected interface. Pressing the
or key scrolls the
channels onto the screen in groups of three. Line 2
displays what is allocated to the DS0 channel listed in
Line 1. Symbols used in the display are shown in
T able 3-4.
Table 3-4
Display Channel Symbols
SymbolMeaning
–The DS0 channel is not allocated.
Prt1The DS0 channel is allocated to Port 1.
N
n
The DS0 channel is allocated to the
n
network interface DS0 channel
n
can be any number from 1 through 24.
, where
" Procedure
6. From the Channel Config screen, select Dsply.
Channel Config:
DsplyClearPrt1
F1
F2
F3
7. From the Display Chan screen, select NET to
display the channels allocated to the network
interface.
Display Chan:
NETPorts
F1
F2
F3
8. If you selected NET the channels allocated to the
network interface are displayed. Line 1 displays
the 24 channels for the network interface, while
Line 2 displays what is allocated to the DS0
channel shown in Line 1. Pressing the or
key scrolls the channels onto the screen in groups
of three.
T o display the DS0 channel allocation:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
key until the
Chan selection appears on the screen.
5. Select Chan.
Edit:
PortNETChan
F1
F2
F3
N1N2N3
Prt1Prt1Prt1
F1
F2
F3
3-16March 19993163-A2-GB20-10
Page 39
Operation
Allocating Data Ports
By using the configuration options, assign a specific
port to DS0 channels on the network interface. The
following methods are available to assign DS0 channels to
the port:
Block – Allows a block of contiguous channels to be
assigned by specifying a data port rate and an initial DS0
channel (the first DS0 channel in a block of DS0
channels). The number of channels assigned is determined
by the port rate. Only those initial DS0 channel numbers
that provide enough bandwidth (based on the port’s data
rate) are displayed on the screen. These channels are
automatically assigned to the destination T1 interface
when the initial DS0 channel is selected.
ACAMI (Alternate Channel Alternate Block
Inversion) – Allows a block of contiguous channels to be
assigned by specifying a data port rate and an initial DS0
channel (the first DS0 channel in a block of DS0
channels). However, with ACAMI, the number of
channels assigned is twice the number needed for the port
rate. This is because with ACAMI, every alternate DS0
channel (starting with the n+1 DS0 channel), does not
carry data from the port, but instead always transmits and
receives all ones.
Chan (Channel) – Individually selects the DS0
channels to allocate to the data port. The data port rate is
automatically determined based on the number of
channels selected.
" Procedure
T o select the data port:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
Chan selection appears on the screen.
5. Select Chan.
Edit:
PortNETChan
F1
F2
6. From the Channel Config screen, press the
key to scroll the ports onto the screen.
7. Select the desired port by pressing its
corresponding Function key.
key until the
F3
Once a port is selected, you have access to the
configuration options to complete the port allocation
procedure. These configuration options enable you to,
• Assign the selected port to the desired interface.
• Select the desired method for channel allocation.
• Select the port rate and starting channel (if the
allocation method is block or ACAMI).
• Select the specific channels (if the allocation
method is by individual channel).
Channel Config:
Dsply Clear Prt1
F1
F2
F3
8. The Assign By configuration option is displayed.
Use one of the following examples, depending on
whether you are assigning by block, ACAMI, or
individual channel.
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Page 40
ACCULINK 3163 DSU/CSU
Block or ACAMI Assignment Method
The Assign By configuration option screen appears
after you select a port.
" Procedure
T o assign by the block or ACAMI method:
1. Press F2 for Block or F3 for ACAMI.
Assign By:
Next Block ACAMI
F3
F3
or
F1
F2
Assign By:
Next Block ACAMI
F1
F2
3. Use the or key to scroll the desired port
rate onto the screen. Rates scroll in groups of
three. Available selections depend on the current
base rate selected for the port. Press the
corresponding Function key to select the port rate.
Then, select Next to display the Start At
configuration option on the screen.
4. The Start At screen displays the network channels.
Use the
or key to scroll the desired
channel onto the screen. Use the Function keys to
select the starting channel. Only those DS0
channel numbers that provide enough bandwidth
(based on the configured data rate) to be used as a
starting channel number are displayed. Channel
allocation for this port can only be cleared by
selecting Clear.
Start At:Clear
NextClearN1
F1
F2
F3
2. Press F1 (Next) to display the next configuration
option (Port Rate).
Port Rate:384
Next64128
F1
F2
F3
3-18March 19993163-A2-GB20-10
Page 41
Operation
Individual Channel Assignment Method
The Assign By configuration option screen appears
after you select a port.
" Procedure
T o assign by the individual channel method:
1. Press the key once to bring the Chan selection
onto the screen.
Assign By:Block
Next Block ACAMI
F1
2. Press F3 (Chan).
Assign By:Chan
BlockACAMI Chan
F1
F2
F2
F3
F3
Clearing DS0 Channel Allocation
You can clear (deallocate) all the DS0 channels
currently allocated to either the network interface or the
synchronous data port.
" Procedure
T o clear DS0 channel allocation:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
Chan selection appears on the screen.
5. Select Chan.
Edit:
PortNETChan
F1
F2
key until the
F3
3. Press F1 (Next) to display the next configuration
option (channel allocation).
4. Line 1 displays the 24 channels for the network
interface. Line 2 displays what is allocated to the
DS0 channel shown in Line 1. Pressing the
key scrolls the channels onto the screen in
groups of three. Select the channel by pressing the
Function key under the desired number. Portn
appears. The port is assigned to that channel. T o
deallocate a port, press the Function key under
that port number. Pressing the Function key under
channels assigned to other ports has no effect.
N1N2
Next Prt1Prt1
F1
F2
F3
or
6. From the Channel Config screen, select Clear.
Channel Config:
DsplyClearPrt1
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Selecting the Timing Source
The DSU/CSU provides the ability to select a master
clock (timing) source that is used to synchronize all of the
T1 and data port interfaces on the DSU/CSU. The clock
for each interface is at the appropriate rate for that
interface (e.g., 1.544 Mbps for the T1 interfaces, the
configured port rate for the data ports), and it is
independent of the master clock rate. This means that the
master clock rate and the DSU/CSU interface rates may
be different.
The clock source configuration options enable you to
select either the network interface, the synchronous data
port, or the internal clock. A sample procedure for
configuring timing is given in the following section,
Configuring for Network Timing. For more information on
configuration options, refer to Appendix C, Configuration
Options.
Configuring for Network Timing
" Procedure
T o configure for network timing:
1. From the top-level menu screen, select Cnfig.
3. Select Edit.
4. From the Edit screen, press the
key until the
Gen selection appears on the screen.
5. Select Gen.
Edit:
NETChanGen
F1
F2
F3
6. Press F1 (Next) to display the next configuration
option (Clock Src).
7. Select the master clock source. For network, press
F2 (note that network is also the default).
Clock Src:NET
NextNETPrt1
F1
F2
F3
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3-20March 19993163-A2-GB20-10
Page 43
Operation
Establishing Access Security
on a Port
Although the password feature is available, it is not
required as a factory default. If used, it ensures access
security before device control is passed to a device
connected to a port. The password configuration option
can be individually set for the COM or MODEM port, or
both if security is needed on both port types. The default
is None. The password itself is set separately (refer to the
following section,Setting a Password).
" Procedure
T o establish access security on a port:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
User selection appears on the screen.
key until the
Setting a Password
In addition to establishing access security on a port
(refer to the previous section, Establishing Access
Security on a Port) the password itself is set. Unless you
specify otherwise, the password is null.
" Procedure
T o set a password:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, press the key until
the Passwd selection appears on the screen.
4. Select Passwd.
Control:
Reset CID Passwd
F1
F2
F3
5. Select User.
Edit:
ChanGenUser
F1
F2
F3
6. Press F1 (Next) until the Password configuration
option appears.
7. Select port(s) to receive access security (None,
Com, Modem, or Both). Use the scroll keys, if
necessary.
Password:None
NextNoneCom
F1
F2
F3
5. Use the and keys to position the cursor
under the desired character. You must enter a
character before the
moves the cursor to the
next space to the right.
Passwd:
xxxxxxxx
UpDownSave
F1
F2
F3
6. Enter the desired password. Press F1 (Up) and
F2 (Down) to scroll up and down through the
valid characters/numbers for the password. Valid
password characters are 0–9, a–z, A–Z, #, –, .,
and /. Press F3 (Save) to save the password.
Passwd:
xxxxxxxx
UpDownSave
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Entering a Password to Gain
Access
You are prompted to enter a password (up to
8 characters) when you are accessing a port whose
Password configuration option is set (refer to the previous
section, Setting a Password).
Valid password characters are 0–9,a–z,A–Z,#, -, .,
and /. The existing password is not shown on the screen.
An underscore in the first position shows where to enter
the first character. If the password is set to all null
characters (default value), press F3 (Done) when the
password screen first appears.
The following screen appears when you access a
DSU/CSU that has a password enabled.
Passwd:_
UpDownDone
F1
F2
F3
Acquiring/Releasing
the User Interface
You can access the user interface from either the front
panel, the COM port, or the MODEM port. The
DSU/CSU allows only one user interface to be active at a
time. The front panel is the default user interface at
power-up or after a reset. It is also the default during a
software download or when a failure occurs at either the
local or remote PC interface.
You can switch an inactive user interface to active if,
• The current active user interface has had no activity
(no key was pressed) for at least five minutes.
• The active user interface has been released with the
Release command.
• The active interface connection is broken. This
includes the call disconnect for a modem interface
or the termination of the front panel emulation
program on a locally-attached PC (if the PC
supports DTR) or the termination of the async
terminal interface on a remote or locally-attached
terminal.
" Procedure
T o enter a password:
1. Use the and keys to position the cursor
under the desired character. You must enter a
character before the
the next space to the right. The key is not
destructive.
Passwd:
UpDownDone
F1
2. Enter the required password. Press F1 (Up) and F2
(Down) to scroll up and down through the valid
characters/numbers for the password. You have
five minutes to enter the correct password before
the DSU/CSU ends the session.
3. Press F3 (Done) to indicate you are done entering
the password. If you enter an invalid password, the
message Invalid Password appears.
key moves the cursor to
xxxxxxxx
F2
F3
Acquiring the Active User Interface
T o acquire the active user interface, press any key. If
you are using the PC interface, use the mouse to click on
the desired Function key.
The top-level menu screen appears on the active user
interface, regardless of what screen was displayed at the
previous active user interface.
DSU ESF
StatTestCnfig
F1
F2
F3
3-22March 19993163-A2-GB20-10
Page 45
Operation
The inactive interface displays the following message
when a Function key is pressed or a connection is made
on the inactive user interface and control cannot be
switched because the currently active interface is in use.
On the screen, either Ft. Panel (front panel), Com Port, or
Modem is displayed in the user interface (User I/F) field.
DSU ESF
User I/F
F1
active
F2
F3
The inactive interface displays the following message
after control has been released from the previously active
interface and another interface has not become active.
DSU ESF
User I/F
F1
idle
F2
F3
Enabling/Disabling the Front
Panel
You can enable or disable the display of information on
the front panel. This feature is useful for ensuring that
other users do not inadvertently change the device’s
configuration options while you are using an external
device (e.g., a PC or async terminal). The factory default
is Enable.
NOTE
If you disable the front panel, be
sure not to alter the configuration
options for using an external
device (e.g., a PC or async
terminal). If this happens, you
lose the ability to communicate
with the device. You will need to
contact your service
representative.
" Procedure
Releasing the Active User Interface
T o release the current active user interface, either allow
five minutes to elapse without pressing any key or use the
Release command.
" Procedure
T o use the Release command:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Rel (Release).
Control:
CallRelLED
F1
F2
The active user interface is released. The message
Released appears. No user interface is active until
input is received from a user interface.
F3
T o enable or disable the front panel:
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
key until the
User selection appears on the screen.
5. Select User.
6. Press F1 (Next) until the FP Access configuration
option appears.
7. Press F2 to enable the front panel or F3 to disable
the front panel.
FP Access:
NextEnabDisab
F1
F2
F3
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Page 46
ACCULINK 3163 DSU/CSU
Using the Integral Modem
The DSU/CSU’s integral modem enables your
DSU/CSU to communicate with remote devices to display
alarm messages or to function as the user interface.
The Call command, available from the Control branch
of the menu tree, provides the following functions to
initiate and terminate modem connections:
• Pass – Initiates a call through the integral modem
to access a far-end DSU/CSU’s front panel from
your DSU/CSU’s front panel (or PC attached to the
COM port).
• Dial – Initiates a call through the integral modem to
a printer, ASCII terminal, or PC. Sets up a
semipermanent connection to route alarm messages
to the specified destination.
• Disconnect – Disconnects an active modem
connection.
• Change Directory – Allows entry of phone
numbers into the internal phone directories.
For additional information, refer to the User Interface
Configuration Options section in Appendix C,
Configuration Options.
" Procedure
T o enter or change numbers in the phone directories:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Call.
Control:
CallRelLED
F1
F2
4. From the Call Setup screen, select ChDir.
Call Setup:
PassDialChDir
F1
F2
F3
F3
Entering Numbers in the Phone Directories
The DSU/CSU has five general directories
(1 through 5) and one alarm directory (A). Use the general
directories to store phone numbers for remote devices
such as standalone DSU/CSUs and ASCII printers. Use
the alarm directory to store the phone number of the
primary ASCII terminal or printer you use to display or
print alarms.
The Directory 1 displays first, along with its
phone number if one has been entered.
5. Press F1 (Next) to display the next directory (2, in
this case). Press F2 (Previous) to display the
previous directory (A, in this case). Directories
appear in order, 1 through 5 and then A.
1: xxxxxxxxxxxxxxxxx
NextPrevEdit
F1
F2
F3
3-24March 19993163-A2-GB20-10
Page 47
Operation
6. Press F3 (Edit) to change the displayed directory’s
phone number (phone numbers can be up to
40 characters). If you select Edit, the Edit screen
appears.
1: xxxxxxxxxxxxxxxxx
NextPrevEdit
F1
F2
F3
7. Use the and keys to position the cursor
under the digit(s) you want to change. Press F1 to
scroll up to a higher digit. Press F2 to scroll down
to a lower digit. The
(default characters) while the
key inserts blanks
key invokes the
End Of Number (EON) character which
terminates the dial string and erases any characters
to the right when you use the Save function.
Valid Phone Number Characters
Table 3-5
See T able 3-5 for the set of valid characters and
rules that apply to entering phone numbers.
Example: P9W8135551212
8. Press F3 (Save) to store your changes in
nonvolatile memory. If you press
or
before saving the phone number you just changed,
the previous phone number remains in effect.
1: xxxxxxxxxxxxxxxxx
UpDownSave
F1
F2
F3
Valid CharactersMeaningRestrictions
0 to 9DTMF or pulse digits—
* #DTMF digits—
PSelects Pulse dialingPulse or Tone must be specified, otherwise
Tone is the default. This must be the first
character in the string, unless the first character
is B. Then, it must immediately follow the B.
TSelects Tone (DTMF) dialingTone or Pulse must be specified, otherwise
Tone is the default. This must be the first
character in the string, unless the first character
is B. Then, it must immediately follow the B.
WWait for dial tone—
BBlind dialing (you need not wait for a dial tone
before entering the dialing sequence)
,Creates a 2-second pause in the dialing
sequence
<space> ( ) -Extra characters for readability. The space is
the default character.
<-End Of Number (EON) character, terminates
the dial string and erases all characters to the
right after F3 (Save) is pressed
To be valid, this must be the first character in
the string.
—
—
—
3-253163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Initiating a Call for Front Panel
Pass-Through Operation
Front panel pass-through initiates a call through the
integral modem to access a far-end DSU/CSU’s front
panel from your DSU/CSU’s front panel (or PC attached
to the COM port).
NOTE
Pass is only available when the
FP Pass configuration option has
been enabled (see Appendix C,
Configuration Options),
the active
physical interface is either the
front panel or the PC, and the
integral modem is not already in
use.
" Procedure
T o initiate front panel pass-through at the near-end
DSU/CSU:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Call.
5. From the Pass Directory screen, press F1 (Up) to
display the next higher numbered directory or
press F2 (Down) to select the next lower
numbered directory.
Pass n:
xxxxxxxxx
UpDownDial
F1
F2
F3
6. When the number of the desired directory appears
on the screen, press F3 (Dial) to place the call.
Pass n:
xxxxxxxxx
UpDownDial
F1
F2
F3
Initiating a Call for PC or ASCII
Terminal/Printer Operation
Use the Dial command to set up a semipermanent
connection to route alarm messages to the specified
destination. The Dial command initiates a call through the
integral modem to a printer, ASCII terminal, or PC.
Control:
CallRelLED
F1
F2
F3
4. From the Call Setup screen, select Pass.
Call Setup:
PassDialChDir
F1
F2
F3
" Procedure
T o initiate a call at the local DSU/CSU:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Call.
Control:
CallRelLED
F1
F2
F3
3-26March 19993163-A2-GB20-10
Page 49
Operation
4. From the Call Setup screen, select Dial. This
selection is not available if the DSU/CSU’s
integral modem is already in use.
Call Setup:
PassDialChDir
F1
F2
F3
5. From the Dial Directory screen, press F1 (Up) to
display the next higher numbered directory or
press F2 (Down) to select the next lower
numbered directory.
Dial n:
xxxxxxxxx
UpDownDial
F1
F2
F3
6. When the number of the desired directory appears
on the screen, press F3 (Dial) to place the call.
" Procedure
T o disconnect an established modem connection using
the Disconnect command:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Call.
Control:
CallRelLED
F1
F2
4. From the Call Setup screen, select Disc.
Call Setup:
DiscChDir
F1
F2
F3
F3
Dial n:
xxxxxxxxx
UpDownDial
F1
F2
F3
Disconnecting the Modem Connection
The Disconnect command enables you to force a
disconnect of an active modem connection from the front
panel of the DSU/CSU. This command is only available
when the DSU/CSU modem is connected.
Disconnect methods include:
• Using the Disconnect command via the front panel
menu (for all dial connections, or when a
pass-through connection is established to another
316x DSU/CSU).
• Pressing and holding the
keys simultaneously (when a pass-through
connection is established to a remote device other
than a 316x DSU/CSU).
and front panel
The modem call is disconnected and the
Command Complete screen appears.
Disconnect:
Command Complete
F1
F2
F3
3-273163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
" Procedure
T o disconnect a modem connection using two front
panel keys:
1. Press the and keys simultaneously and
hold for two seconds.
Call Setup:
DiscChDir
F1
F2
F3
The modem call is disconnected and the
Command Complete screen appears.
Resetting the DSU/CSU
Use the Reset command to perform a power-on reset of
the DSU/CSU.
" Procedure
4. Select Reset.
Control:
ClrReg Reset
F1
F2
F3
5. From the Device Reset screen, press F1 to initiate
a reset of the DSU/CSU (the power-up sequence
screen appears). Press F2 instead to return to the
Control screen without initiating a reset.
Device Reset:
YesNo
F1
F2
F3
Download Operations
T o reset the DSU/CSU:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, press the
key until
the Reset selection appears on the screen.
NOTE
The Download command is for
use by service personnel only.
Loss of primary data could result
from improper use.
3-28March 19993163-A2-GB20-10
Page 51
Operation
User Interface Access
Security
NOTE
This page of the manual is selfsupporting and can be removed to
prevent unwanted knowledge of the
security access levels and their
selection.
The user interface access security option allows you to
limit access to the DSU/CSU to display-only and
non-intrusive functions.
Level 1 (Lvl1) access security allows access to all
functions available through the menu tree. This is the
default setting.
Level 2 (Lvl2) access security restricts access to only
those functions that cannot affect the operation of the
DSU/CSU in any way. At this level,
• None of the functions in the T est or Ctrl branches
are available.
Changing User Interface Access Security
" Procedure
T o change user interface access security:
1. Press the key two times from the top-level
screen.
DSU ESF
StatTestCnfig
F1
F2
2. Press the key three times.
DSU ESF
StatTestCnfig
F1
F2
F3
F3
• All functions on the Stat branch are available.
• All functions on the Cnfg branch are available for
display , but they cannot be used to save to a
configuration area.
You can only reach the screen that controls security
access using the front panel.
3. Press the key once.
DSU ESF
StatTestCnfig
F1
F2
F3
The Security screen appears.
Security:
Lvl1Lvl2
F1
F2
F3
4. Press F1 to select Lvl1, or press F2 to select Lvl2.
After you make a selection, the top-level screen
appears.
If you do not make a selection within 5 minutes,
the Automatic Device Health/Status screen
appears.
The DSU/CSU can detect and report faults, and
perform diagnostic tests. These features ensure that your
DSU/CSU is giving you optimum performance in your
network.
4-13163-A2-GB20-10March 1999
Page 54
ACCULINK 3163 DSU/CSU
Self-Test Health
Use the Self-Test Health command to display the
results of the power-up self-test. Possible messages are
listed in T able 4-1. See Chapter 2, Installation, for more
information about power-up self-test.
" Procedure
T o display power-up self-test results:
1. From the top-level menu screen, select Stat.
DSU ESF
StatTestCnfig
F1
F2
F3
Self-Test Health Messages
Table 4-1
2. From the Status screen, select STest.
Status:
DevHS STestPerf
F1
F2
F3
3. View the results of the last power-up self-test. If
no problems were found during power-up, the
following message appears.
STest Health:
Passed
F1
F2
F3
Message
PassedNo problems were found during power-up.
CPU failThe central processing unit failed internal testing.
Device failOne or more of the unit’s integrated circuit chips failed to pass internal device level testing.
B8ZS/LOS failThe unit failed to encode data properly or to detect Loss Of Signal.
Alarm failThe unit failed to transmit AIS or to detect an Yellow alarm.
Memory failThe unit failed program checksum verification.
LCD failThe front panel liquid crystal display (LCD) failed.
NET T1 failThe unit failed to internally loop data on the network T1 circuit.
DSU failThe unit failed to internally loop data on the DSU.
DSU Port 1 failPort’s integrated circuitry failed to pass device internal testing.
Modem failUnit failed to internally loop data through the modem circuit.
Failure
xxxxxxxx
An 8-digit hexadecimal failure code is provided for service personnel.
Description
4-2March 19993163-A2-GB20-10
Page 55
Monitoring and Testing
Device Health and Status
Use the Device Health and Status branch to view the
current health and status messages for the DSU/CSU.
T able 4-2 lists these messages in priority order.
" Procedure
T o display device health and status:
1. From the top-level menu screen, select Stat.
2. From the Status screen, select DevHS.
Status:
DevHS STestPerf
F1
F2
Alarm/status messages appear on Line 2 of the
LCD in priority order (highest to lowest). The
DSU/CSU is polled for current status every ten
seconds. If the status has changed from the last
poll, the Health and Status screen is updated and
the highest priority message is displayed.
F3
3. Use the scroll keys, if necessary, to scroll
additional device health and status messages onto
the LCD.
Device H/S:
LOS at NET
F1
F2
F3
The Auto Device Health and Status screen appears
when there is no activity (no keys pressed) on the
active physical interface for five minutes. Only the
highest priority message appears on Line 2 of the
LCD.
Auto Dev H/S
LOS at NET
F1
F2
F3
4-33163-A2-GB20-10March 1999
Page 56
ACCULINK 3163 DSU/CSU
Table 4-2
Health and Status Messages
Message
LOS at NetA Loss Of Signal condition (175 consecutive zeros) has been detected on the network interface.
The condition is cleared when the density of ones to zeros received is 12.5%.
OOF at NetAn Out Of Frame condition (2 out of 4 frame synchronization bits in error) has been detected on
the network interface. The condition is cleared when a reframe occurs.
AIS at NetAn Alarm Indication Signal (unframed all ones signal) is being received by the network interface.
EER at NetAn Excessive Error Rate condition has been detected on the network interface (the bit error rate
has exceeded the configured threshold for ESF framing). The condition is cleared when the error
rate falls below the threshold value.
Yellow at NetA Yellow Alarm signal is being received by the network interface.
PORT
IP DownThe IP management link is in a down state for
PORT
condition occurs if the
management system and the DSU/CSU is not currently possible for this port.
Selftest failedA failure was detected during the power-on self-test. Select STest (in the Stat branch) to display
more information about the failure.
DevFail
Download failedA download attempt was interrupted and failed to complete. The condition is cleared by resetting
xxxxxxxx
An internal error has been detected by the operating software. An 8-digit code appears for use by
service personnel. The condition is cleared by resetting the device.
the device.
is configured for Mgmt, and communication between the
Description
PORT
(where
PORT
is COM or MODEM). This
Test in progressA test is currently active. Select Tstat (in the Stat branch) to display more test information.
Modem ConnectedThe integral modem is currently connected. This message is only displayed for standalone
DSU/CSUs.
Master Clk failThe master clock has failed. Timing for the DSU/CSU is provided by the internal clock.
DSU OperationalThis message only appears if there are no valid alarm or status messages.
4-4March 19993163-A2-GB20-10
Page 57
Monitoring and Testing
Performance Reports
When the network interface is configured for ESF
operation, network performance is continuously
monitored and maintained in two sets of aggregate
registers: Carrier Network Interface Registers (T elco) and
User Network Interface Registers (User). The User
registers contain an extra status register (Status Event).
Registers shown on the front panel LCD are listed in
T able 4-3. These registers are status registers that collect
performance data for the previous 24-hour period.
Performance data is updated in 15-minute intervals. After
15 minutes, the current interval is rolled over into a set of
accumulator registers that represent the previous 96
15-minute intervals for the register. An interval total of
how many of the 96 registers contain valid data is also
kept, as well as a 24-hour total for each accumulator
register.
" Procedure
T o display User Network Interface (User) performance:
1. From the top-level menu screen, select Stat.
2. From the Status screen, select Perf.
5. When you press F1 from the User Registers
screen, the User registers for the current
15-minute interval appear.
User Current:
Event =
F1
xx,xxx
F2
F3
6. When you press F2 from the User Registers
screen, the User registers for the 24-hour total
interval appear.
User 24 Hour:
VldIntvl =
F1
xx
F2
F3
7. When you press F3 from the User Registers
screen, the interval screen appears. Use this screen
to choose the specific 15-minute interval.
Status:
DevHS STest Perf
F1
F2
F3
3. Select User registers.
Performance:
TelcoUser
F1
F2
F3
4. From the User Registers screen, press F1 to view
current registers (go to Step 5), press F2 to view
24-Hour T otals (go to Step 6), or press F3 to view
15-Minute Interval Registers (go to Step 7).
User Registers:
Cur24TotIntvl
F1
F2
F3
User Intvl: 01
UpDownDsply
F1
F2
F3
8. Use the and keys to position the cursor
under the first or second digit in the interval
number displayed, then use the F1 (Up) and
F2 (Down) keys to increment/ decrement the
number.
9. When you have selected the number of the interval
you want to display, press F3 (Dsply) to display
the registers for the interval selected. Use the
scroll keys to view additional register information.
User Intvl:
ES=
xxx
F1
F2
xx
F3
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ACCULINK 3163 DSU/CSU
You can reset the performance registers via the ClrReg
command in the Control branch of the front panel menu.
" Procedure
T o clear the performance registers:
1. From the top-level menu screen, press the key
until the Ctrl selection appears on the screen.
2. Select Ctrl.
3. From the Control screen, press the
the ClrReg selection appears on the screen.
4. Select ClrReg.
Control:
RelLEDClrReg
F1
F2
key until
F3
5. From the Clear Prf Regs screen, press F1 to clear
the User registers.
Clear Prf Regs:
User
F1
F2
F3
All accumulators are reset to zero, and all status
registers are cleared. The current interval timer,
the number of valid intervals count, and the total
24-hour counts are reset to zero. The CommandComplete message then appears.
Table 4-3
(1 of 2)
Performance Registers
Register
EventESF error events counter. An error event is an
ESF frame with either a Cyclic Redundancy
Check (CRC) error or an Out Of Frame (OOF)
event. The maximum count is 65,535. This
register is only reset as a result of a reset
command from the network. This register is
valid for the current interval only .
CurTimerCurrent interval timer. This register records the
number of seconds in the current 15-minute
interval. The maximum is 900 seconds. This
register is valid for the current interval only .
VldIntvlN/AV alid interval total. Records the number of valid
ESThe number of errored seconds for the current
interval. An errored second is any second with
one or more ESF error events. The maximum is
900 seconds.
Interval DescriptionTotals Description
N/A
N/A
15-minute intervals in the previous
is 24 hours for aggregate performance and 8 hours
for port performance. This register is not valid for the
current interval.
The total number of errored seconds for the previous
x
hours, where x is 24 hours for aggregate
performance and 8 hours for port performance.
x
hours, where
x
4-6March 19993163-A2-GB20-10
Page 59
Performance Registers
RegisterTotals DescriptionInterval Description
Monitoring and Testing
Table 4-3
(2 of 2)
UASThe number of unavailable seconds for the
current interval. An unavailable second is any
one second interval when service is
unavailable. (Detection occurs with
10 consecutive unavailable seconds.) The
maximum is 900 seconds.
SESThe number of severely errored seconds for the
current interval. A severely errored second is
any second with 320 or more CRC errors, or
any second with one or more OOF events. The
maximum is 900 seconds.
BESThe number of bursty errored seconds for the
current interval. A bursty errored second is any
second with more than one, but less than 320,
CRC errors. The maximum is 900 seconds.
LOFCThe loss of frame count for the current interval.
This is a count of the number of times that an
LOF is declared. The maximum count is 255.
CSSThe number of controlled slip seconds for the
current interval.
StEvntThe status events register records whether one
or more of the following events have occurred
at least once during the interval. The event is
identified by a letter as follows:
Y – A Yellow Alarm signal has been received
on the network interface.
The total number of unavailable seconds for the
x
previous
performance and 8 hours for port performance.
The total number of severely errored seconds for the
previous
performance and 8 hours for port performance.
The total number of bursty errored seconds for the
previous
performance and 8 hours for port performance.
The total loss of frame count for the previous
x
hours, where x is 24 hours for aggregate
performance and 8 hours for port performance.
The total number of controlled slip seconds for the
previous
performance and 8 hours for port performance.
N/A
hours, where x is 24 hours for aggregate
x
hours, where x is 24 hours for aggregate
x
hours, where x is 24 hours for aggregate
x
hours, where x is 24 hours for aggregate
E – The Excessive Error Rate threshold has
been exceeded.
F – A Frame Synchronization Bit Error has
been detected.
V – A Bipolar Violation has been detected.
If none of these events occurred during the
interval, StEvnt=none will be displayed.
4-73163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Alarms
The DSU/CSU can be attached, either locally or
remotely , to an ASCII terminal or printer to display or
print alarm messages. Alarms can also be displayed on a
PC that is using a terminal emulation package.
You can route these alarms to the MODEM port, the
COM port, or both.
Each alarm message contains a customer identification
to indicate which remote DSU/CSU is reporting an alarm.
For information about customer identification, refer to the
Displaying Unit Identitysection in Chapter 3, Operation.
Possible alarm messages are as follows:
• Continuous Loss Of Signal detected at the
Network Interface.
• Alarm Cleared. Loss Of Signal condition at the
Network Interface.
• Continuous Out Of Frame condition detected at
the Network Interface.
• Alarm Cleared. Out Of Frame condition at the
Network Interface.
• Alarm Indication Signal received at the Network
Interface.
• Alarm Cleared. Alarm Indication Signal at the
Network Interface.
• An Excessive Error Rate has been detected at
the Network Interface.
• Alarm Cleared. An Excessive Error Rate at the
Network Interface.
• Yellow Alarm signal received at the Network
Interface.
• Alarm Cleared. Yellow Alarm signal at the
Network Interface.
• Continuous Out Of Frame condition detected at
synchronous data port 1.
• Alarm Cleared. Out Of Frame condition at
synchronous data port 1.
• An Excessive Error Rate has been detected at
synchronous data port 1.
• Alarm Cleared. An Excessive Error Rate at
synchronous data port 1.
If two alarm conditions are detected at once, the higher
priority alarm is reported. However, if an even higher
priority alarm is detected before the first alarm is cleared,
the later alarm is not reported. (The alarms listed above
are in priority order with the highest priority listed first.)
Alarms remain active until the alarm condition is
cleared. Also, an alarm clear message is only sent when
there are no other alarms active.
For information about alarm configuration options,
refer to the Alarm Configuration Options section in
Appendix C, Configuration Options.
For troubleshooting information, refer to the
Troubleshootingsection.
Troubleshooting
The DSU/CSU is designed to provide you with
trouble-free service. However, Table 4-4 gives you some
direction if a problem occurs.
For problems other than those listed in the table, please
contact your service representative.
Table 4-4
(1 of 2)
Troubleshooting
Symptom
No power1. The power module is not securely attached.
2. The wall receptacle has no power.
Power-Up
Self-Test fails
4-8March 19993163-A2-GB20-10
The DSU/CSU has detected an internal hardware
failure.
Possible CauseSolutions
1. Check the power module attachment.
2. Check the wall receptacle power by plugging
in some equipment that is known to be
working.
Contact your service representative.
Page 61
Troubleshooting
SymptomSolutionsPossible Cause
Monitoring and Testing
Table 4-4
(2 of 2)
Message LOS at
NET appears
Message OOF at
Net appears
Message
Yellow at Net
appears
Message
AIS at Net
appears
Message EER atNet appears
A failure message
appears followed
by an 8-digit code
x x x x x x x x
(
)
1. Network cable problem.
2. No signal is being transmitted at the far-end.
3. Facility problem.
1. Incompatible framing format between the
network and the DSU/CSU.
2. Network cabling problem.
3. Facility problem.
1. Network cable problem.
2. Far-end device has lost framing sync on the
line.
3. Facility problem.
1. Upstream device is transmitting an AIS.
2. The network is transmitting an AIS.
Facility problem.Contact your facility provider.
Internal DSU/CSU problem.Record the 8-digit code, then contact your
1. Check that the network cable is securely
attached at both ends.
2. Check the far-end status.
3. Contact your facility provider.
1. Check that the framing format for the network
interface is correct.
2. Check that the network cable is securely
attached at both ends.
3. Contact your facility provider.
1. Check that your network cable is securely
attached at both ends.
2. Check the status of the far-end device.
3. Contact your facility provider.
1. Check the status of the upstream device(s).
2. Contact your facility provider.
service representative.
Mgmt link is down 1. The manager configuration is mismatched with
the DSU/CSU configuration.
2. The manager’s link layer protocol is not
running.
Invalid NumberThe modem cannot dial because the phone
number is invalid or there is no number in the
selected directory.
No Dial ToneThe modem cannot dial because there is no dial
tone.
Busy SignalThe modem is receiving a busy signal.Redial the phone number later.
No Answer ToneThe remote end does not answer within
45 seconds.
Modem In UseThe modem is in use.Redial the phone number later.
1. Check that the configurations are matched.
2. Start the link layer protocol.
Check that the selected phone number is correct.
Check that the modem is connected properly .
Redial the phone number later.
4-93163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Test Jacks
T wo test jacks are located on the front panel: NET
MON (Network Monitor) In and NET MON Out.
NET MON In nonintrusively monitors the signal going
into the network.
NET MON Out nonintrusively monitors the signal
coming from the network.
Test Commands
The test commands enable you to run loopbacks and
test patterns on the DSU/CSU, and to test the front panel
LEDs. These tests can help you isolate areas of trouble if
you are having problems with your DSU/CSU.
T o access all Test commands from the Test branch,
press F2 to select T est from the top-level menu screen.
DSU ESF
StatTestCnfig
You cannot perform remote loopbacks if any of the
local loopbacks are active. If you attempt to do so, the
error message Invld Test Combo (Invalid Test
Combination) appears.
Sending a Line Loopback Up or Down
" Procedure
T o send a Line Loopback Up or Down sequence on the
network to a far-end DSU/CSU:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Rlpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
F3
F1
F2
F3
Remote Loopback Tests
The Remote Loopback tests enable you to troubleshoot
your circuit by sending the following to a far-end device:
For Networks
• Line loopback up activation sequence for
10 seconds (LLBUP)
• Line loopback down activation sequence for
10 seconds (LLBDN)
For Channels
• V.54 activation sequence to initiate a V .54 Loop 2
(54UP)
• V.54 deactivation sequence to terminate a V .54
Loop (54DN)
• ANSI T1.403 (Annex B) activation sequence to
initiate a DCLB on the remote device (FT1UP)
3. From the Rem Loopback screen, press F1 to select
LLBUP (Line Loopback Up), or press F2 to select
LLBDN (Line Loopback Down).
Rem Loopback:
LLBUP LLBDN 54UP
F1
F2
F3
The Line Loopback sequence is sent up or
downstream to the far-end DSU/CSU for
10 seconds. During this time, Sending appears on
Line 2 of the LCD, followed by CommandComplete when 10 seconds have elapsed.
You can press any function key to restore the Rem
Loopback screen without affecting transmission of
the loopback code.
• ANSI T1.403 (Annex B) deactivation sequence to
terminate a DCLB on the remote device (FT1DN)
4-10March 19993163-A2-GB20-10
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Monitoring and Testing
Sending a V.54/ANSI FT1
Activation/Deactivation
" Procedure
T o send a V.54 or ANSI FT1 Activation or
Deactivation loopback sequence to the far-end DSU/CSU:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Rlpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
3. From the Rem Loopback screen, press the
function key that corresponds to the specific
loopback test you want to perform. Use the scroll
keys, if necessary.
Rem Loopback:
LLBUP LLBDN 54UP
F1
F2
The 54UP, 54DN, FT1UP, and FT1DN commands
send the requested sequence out the network
interface on the DS0 channels allocated to Port 1.
F3
F3
Local Loopback Tests
The Local Loopback tests enable you to conduct circuit
testing and fault isolation for the digital line. The
supported local loopback tests are:
• Line Loopback (LLB)
• Payload Loopback (PLB)
• Repeater Loopback (RLB)
• Data Channel Loopback (DCLB)
• Data T erminal Loopback (DTLB)
The Line Loopback command can be activated and
deactivated in response to commands received over the
network interface. The Network Interface configuration
option NET LLB controls whether the DSU/CSU
responds to the commands transmitted on the network
interface to initiate LLBs (see Appendix C, Configuration
Options).
The data port configuration option NET DCLB
controls whether the DSU/CSU responds to inband V.54
commands to initiate DCLB for that port (see
Appendix C, Configuration Options).
Local loopback tests can be aborted (Abort Command)
at any time.
No more than two local loopbacks can be active at any
one time. An additional restriction prohibits certain
loopbacks from running at the same time. Valid loopback
combinations listed in T able 4-5 are identified by YES.
The sequence is sent to the far-end DSU/CSU.
During this time, Sending appears on Line 2 of
the LCD, followed by Command Complete when
the sequence is complete.
During the Sending message, you can press the
and keys without affecting transmission
of the loopback sequence.
Table 4-5
Valid Loopback Combinations
LLBPLBRLBDCLBDTLB
LLBN/ANOYESNOYES
PLBNON/ANONOYES
RLBYESNON/ANOYES
DCLBNONONONONO
DTLBYESYESYESNONO
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ACCULINK 3163 DSU/CSU
Starting a Line Loopback
The Line Loopback command (LLB) loops the
received signal on the network interface back to the
network without change.
CSUDSU
NETWORK
LLB
INTERFACE
ALL 1s
PORT 1
98-15946
" Procedure
T o perform a Line loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Starting a Payload Loopback
The Payload Loopback command (PLB) loops the
received signal on the network interface back to the
network after it has passed through the framing circuitry
of the DSU/CSU. Framing CRCs and BPVs are corrected.
CSUDSU
NETWORK
PLB
INTERFA CE
ALL 1s
PORT 1
98-15947
" Procedure
T o perform a Payload loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
F3
3. From the Loopback screen, select LLB.
Loopback:
AbortLLBPLB
F1
F2
F3
Test Started appears on Line 2. If a line loopback
is already in progress, the Already Active
message appears. If an invalid combination of
loopbacks is in progress, the error message InvldTest Combo appears (see Table 4-5 for valid
loopback test combinations).
Test:
Rlpbk LpbkPtrns
F1
F2
F3
3. From the Loopback screen, select PLB.
Loopback:
AbortLLBPLB
F1
F2
F3
Test Started appears on Line 2. If a Payload
loopback is already in progress, the AlreadyActive message appears. If an invalid combination
of loopbacks is in progress, the error message
Invld Test Combo appears (see Table 4-5 for
valid loopback test combinations).
4-12March 19993163-A2-GB20-10
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Monitoring and Testing
Starting a Repeater Loopback
The Repeater Loopback command (RLB) loops the
signal being sent to the network back to the data port. The
signal is looped back as close to the network interface as
possible (after it has passed through the framing circuitry
of the DSU/CSU). Framing CRCs and BPVs are
corrected.
CSUDSU
NETWORK
RLB
PORT 1
INTERFA CE
ALL 1s
98-15948
" Procedure
T o perform a Repeater loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Starting a Data Channel Loopback
The Data Channel Loopback command (DCLB) loops
the data received from the network interface, for all DS0
channels allocated to the data port, back to the network.
The loopback occurs after the data passes through the port
circuitry but before it is sent out the data port.
CSUDSU
NETWORK
INTERFA CE
DCLB
98-16103
" Procedure
T o perform a Data Channel loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
F3
Test:
Rlpbk LpbkPtrns
F1
F2
F3
3. From the Loopback screen, press the key until
the RLB selection appears on the screen.
4. Select RLB.
Loopback:
LLBPLBRLB
F1
F2
F3
Test Started appears on Line 2. If a Repeater
loopback is already in progress, the AlreadyActive message appears. If an invalid combination
of loopbacks is in progress, the error message
Invld Test Combo appears (see Table 4-5 for
valid loopback test combinations).
3. From the Loopback screen, press the key until
the DCLB selection appears on the screen.
4. Select DCLB.
Loopback:
PLBRLBDCLB
F1
F2
F3
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ACCULINK 3163 DSU/CSU
Test Started appears on Line 2. If a Data Channelloopback is already in progress, the Already
Active message appears. If an invalid combination
of loopbacks is in progress, the error message
Invld Test Combo appears (see Table 4-5 for
valid loopback test combinations).
Loopback: DCLB 1
Test Started
F1
F2
F3
Starting a Data Terminal Loopback
The Data T erminal Loopback command (DTLB) loops
the data received from the selected port, for all DS0
channels allocated to the port, back out of the port. This
loopback occurs after the data passes through the port
circuitry but before it reaches the T1 framer.
CSUDSU
ALL 1s
NETWORK
INTERFA CE
4. Select DTLB.
Loopback:
RLBDCLBDTLB
F1
F2
F3
Test Started appears on Line 2. If a Data
T erminal loopback is already in progress, the
Already Active message appears. If an invalid
combination of loopbacks is in progress, the error
message Invld Test Combo appears (see
T able 4-5 for valid loopback test combinations).
Loopback: DTLB
Test Started
F1
F2
F3
Aborting Loopbacks
The Abort Loopback command stops all loopback tests
or any selected loopback test currently active on the
DSU/CSU.
DTLB
PORT 1
98-15950
" Procedure
T o perform a Data Terminal loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
3. From the Loopback screen, press the key until
the DTLB selection appears on the screen.
F3
" Procedure
T o abort one or more loopback tests:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
Test:
Rlpbk LpbkPtrns
F1
F2
F3
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Monitoring and Testing
3. From the Loopback screen, select Abort.
Loopback:
AbortLLBPLB
F1
F2
F3
4. From the Loopback Abort screen, press the
desired Function key to abort All or one specific
loopback test. Use the scroll keys, if necessary.
Loopback: Abort
AllLLBPLB
F1
F2
F3
When abort is complete, the message Command
Complete appears on the Abort screen.
Sending Test Patterns
Use the Send command to start transmission of a test
pattern.
Only one test pattern can be active at a time.
" Procedure
T o send a test pattern:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Ptrns.
Test:
Rlpbk LpbkPtrns
F1
F2
3. From the Patterns screen, select Send.
F3
NOTE
If you mistakenly choose to abort
a loopback test that is not
currently running, a CommandComplete message will still
display and the loopback that is
currently active will still be
running. Use the TStat branch to
view the test status to determine if
the abort was successful.
Test Patterns
Use the Test Pattern commands to send, monitor, and
abort test patterns. Available test patterns are:
• QRSS – A quasi-random signal source
approximating live data that can be monitored for
logic errors (on the network and the data port).
• 1-in-8 – A test pattern consisting of a one (1)
followed by seven zeros (on the network only).
Patterns:
AbortSendMon
F1
F2
F3
4. From the Patterns Send screen, press F1 to send a
QRSS pattern, F2 to send a 1-in-8 pattern, F3 to
send a 511 pattern.
Patterns: Send
QRSS 1in8511
F1
F2
F3
If you send a 1-in-8 pattern, skip Step 5.
• 511 – A pseudo-random bit sequence (PRBS) that is
511 bits long (on the data ports only). This is a
PRBS 2
9
–1 test.
4-153163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
5. From the Send screen, press the Function key that
corresponds to network or the port for which you
want to send a test pattern. Use the scroll keys, if
necessary. (NET does not appear for the 511
pattern.)
Send:
Name
NETPrt1
F1
F2
F3
The Test Started screen appears.
Send:
Name and Dest
Test Started
F1
F2
F3
If the DSU/CSU is already sending the test pattern
you selected, the message Already active appears.
If you attempt to start a different pattern test while
one is active, the message Invld Test Combo
appears.
Monitoring Test Patterns
Use the Monitor command to monitor a QRSS test
pattern over all the channels on the network interface, or
to monitor QRSS or 511 test patterns on the channels
allocated to an individual port.
This command provides the number of errors detected
in the test pattern (5 digits, maximum 99999).
" Procedure
3. From the Patterns screen, select Mon.
Patterns:
AbortSendMon
F1
F2
F3
4. From the Patterns Mon screen, press F1 for QRSS
or F2 for 511.
Patterns: Mon
QRSS 511
F1
F2
F3
5. From the Monitor screen, press the Function key
that corresponds to network or the port for which
you want to send a test pattern. Use the scroll
keys, if necessary. (NET does not appear for the
511 pattern.)
Monitor:
Name
NETPrt1
F1
F2
F3
The Monitor screen appears with the error count.
If the maximum of 99999 is exceeded, OvrFlw
appears instead of the count. If the receiver loses
synchronization while the monitor is active, NoSync appears.
T o monitor a QRSS or 511 test pattern:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Ptrns.
Test:
Rlpbk LpbkPtrns
F1
4-16March 19993163-A2-GB20-10
F2
F3
Page 69
Monitoring and Testing
Aborting Test Patterns
Use the Abort command to stop all test patterns or any
selected test pattern active on the DSU/CSU.
" Procedure
T o abort test patterns:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Ptrns.
Test:
Rlpbk LpbkPtrns
F1
F2
3. From the Patterns screen, select Abort.
Patterns:
AbortSendMon
F1
F2
F3
F3
NOTE
If you mistakenly choose to abort a
test pattern that is not currently
running, a Command Complete
message still displays and the test
pattern currently active still runs. Use
the TStat branch to view the test
status to determine if the abort was
successful.
5. From the Abort screen, press the Function key that
corresponds to the network or port for which you
want to abort a test pattern. Use the scroll keys, if
necessary.
Abort:
Send or Mon
NETPrt1
F1
F2
F3
The DSU/CSU terminates the selected test pattern
and displays the message Command Complete.
4. From the Patterns Abort screen, press the desired
Function key to abort either All active test
patterns, active Send test patterns, or the active
Monitor (Mon) test pattern.
Patterns: Abort
AllSendMon
F1
F2
F3
If you select All, the DSU/CSU terminates all
active test patterns and displays the message
Command Complete. Skip Step 5.
Lamp Test
Use the Lamp Test commands to start and stop a test of
the DSU/CSU front panel LCD and LEDs.
Starting a Lamp Test
" Procedure
T o start a Lamp test:
1. From the top-level menu screen, select Test.
2. From the Test screen, press the key until the
Lamp selection appears on the screen.
3. From the Test screen, select Lamp.
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ACCULINK 3163 DSU/CSU
Test:
LpbkPtrnsLamp
F1
F2
F3
4. From the Lamp Test screen, select Start.
Lamp Test:
AbortStart
F1
F2
F3
5. The following screens alternately appear on the
LCD until you press a Function key to return to
the Lamp T est screen. In addition, all LEDs blink.
Aborting a Lamp Test
" Procedure
T o abort the Lamp test:
1. Display the Lamp Test screen. To do this when the
LCD is alternating the Lamp test screens, press
any Function key. Otherwise, follow Steps 1
through 3 for starting a Lamp test.
Lamp Test:
AbortStart
F1
F2
2. From the Lamp Test screen, select Abort.
Lamp Test:
AbortStart
F3
F1F2
F3
0123456789 : ; < = > ?
@ABCDEFGHIJKLMNO
F1
F2
F3
6. When you are satisfied that all LEDs are lighting
and the LCD is functioning properly, abort the
Lamp test from the Lamp T est screen. If there is
no activity on the DSU/CSU front panel for five
minutes, the Device Health and Status screen
appears automatically. However, the Lamp test
remains active until it is aborted.
F1
F2
F3
4-18March 19993163-A2-GB20-10
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Monitoring and Testing
Displaying DSU/CSU Test
Status
Use the Test Status command to display the active tests
for the DSU/CSU. Status messages that can display on the
front panel LCD are listed in T able 4-6.
" Procedure
T o display test status:
1. From the top-level menu screen, select Stat.
2. From the Status screen, press the key until the
TStat selection appears on the screen.
Table 4-6
Test Status Messages
Message
No Test ActiveNo tests are currently active.
LLB Test ActiveThe network interface is in Line loopback.
3. Select TStat.
Status:
STest PerfTStat
F1
F2
F3
The Test Status screen appears showing you what
tests are active for the DSU/CSU.
Description
PLB Test ActiveThe network interface is in Payload loopback.
RLB Test ActivePort 1 is in Repeater loopback.
DCLB on Port 1Port 1 is in a Data Channel loopback.
DTLB on Port 1Port 1 is in a Data Terminal loopback.
QRSS on NetA QRSS test pattern is being sent on the network interface.
1–8 Test ActiveA 1-in-8 test pattern is being sent on the network interface.
QRSS on Port 1A QRSS test pattern is being sent to the network on the channels allocated to Port 1.
511 on Port 1A 511 test pattern is being sent to the network on the channels allocated to Port 1.
Mon QRSS, NetA QRSS test pattern is being monitored on the network interface.
Mon QRSS, Port 1A QRSS test pattern is being monitored on the channels allocated to Port 1.
Mon 511, Port 1A 511 test pattern is being monitored on the channels allocated to Port 1.
Lamp Test ActiveThe Lamp test is currently active.
The DSU/CSU configuration option tables contain a
list of all configuration options and their available
selections. The configuration options are arranged into
functional groups:
• Network Interface Configuration Options
The Network Interface configuration options
configure the network interface on the DSU/CSU
(Table C-1).
• Sync Data Port Configuration Options
The Port configuration options configure the
synchronous data ports on the DSU/CSU
(Table C-2).
• Cross Connect Configuration Options
The Cross Connect configuration options configure
the synchronous data port channel allocations on
the DSU/CSU (Table C-4).
• General Configuration Options
The General configuration options configure alarms
and clocks on the DSU/CSU (T able C-5).
• User Interface Configuration Options
The User Interface configuration options configure
and control the DSU/CSU user interfaces
(Table C-6).
• Alarm Configuration Options
The Alarm configuration options specify how alarm
conditions are handled by the DSU/CSU
(Table C-7).
• Management and Communication
Configuration Options
The Management and Communication
configuration options configure the DSU/CSU for
T elnet access (Table C-8).
The configuration tables include a description of each
configuration function and its available selections. In the
tables, the top line of each configuration option entry
indicates the factory default setting.
C-13163-A2-GB20-10March 1999
Page 78
ACCULINK 3163 DSU/CSU
Network Interface
Configuration Options
Table C-1
(1 of 2)
Network Interface Configuration Options
NET Framing: ESF (Factory 1) D4 (Factory 2)
Next D4 ESF Prev
Network Line Framing Format. The framing format to be used on the network interface.
D4 – Configures for the D4 framing format.
ESF – Configures for the Extended Superframe format.
NET Coding: B8ZS (Factory 1) AMI (Factory 2)
Next AMI B8ZS Prev
Network Line Coding Format. The line coding format to be used on the network interface.
AMI – Configures for the Alternate Mark Inversion coding format.
B8ZS – Configures for the Bipolar 8 Zero Suppression coding format.
LBO: 0.0
Next 0.0 –7.5 –15 –22.5 Prev
Line Build Out. The line build out (LBO) for the signal transmitted to the network (0.0 dB is the factory default).
Enab – Generates and sends ANSI PRMs over the FDL every second.
Disab – Prevents the DSU/CSU from generating ANSI PRMs.
NOTE: This configuration option is only available if the framing format is set to ESF.
Mgmt Link: Disab
Next Enab Disab Prev
FDL Management Link. Specifies whether Facility Data Link (FDL) is enabled. Selecting Enab allows Telnet traffic to flow
over the 4 kbps data link provided by FDL. Running Telnet over FDL requires an end-to-end FDL connection and cannot
be terminated within the network.
Enab – Enables the FDL management link for Telnet.
Disab – Disables the FDL management link.
NOTE: This configuration option is only available if the framing format is set to ESF.
NOTE: If the local DSU/CSU’s FDL is enabled, the remote DSU/CSU’s FDL must also be enabled.
C-2March 19993163-A2-GB20-10
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Configuration Options
Table C-1
(2 of 2)
Network Interface Configuration Options
NET LLB: Enab
Next Enab Disab Prev
Network Initiated Line Loopback (LLB). Allows initiation and termination of the LLB to be controlled by the receipt of
LLB-Actuate and LLB-Release commands from the network (or remote DSU/CSU).
Enab – Causes the DSU/CSU to enter an LLB (if the DSU/CSU can perform an LLB in its current state) and to cause an
LLB-Release command to terminate the LLB.
Disab – Causes the DSU/CSU to ignore LLB-Actuate and LLB-Release commands (the DSU/CSU is not in compliance
with ANSI T1.403 and A T&T TR 62411).
NOTE: When this configuration option is enabled, the DSU/CSU recognizes the in-band LLB-Actuate and LLB-Release
NET PLB: Enab
Next Enab Disab Prev
Network Initiated Payload Loopback (PLB). Allows initiation and termination of the PLB to be controlled by the receipt of
PLB-Actuate and PLB-Release commands from the network (or remote DSU/CSU).
Enab – Causes the DSU/CSU to enter a PLB (if the DSU/CSU can perform a PLB in its current state) and to cause a
PLB-Release command to terminate the PLB.
Disab – Causes the DSU/CSU to ignore PLB-Actuate and PLB-Release commands (the DSU/CSU is not in compliance
with ANSI T1.403 and A T&T TR 54016).
NOTE: When this configuration option is enabled, the DSU/CSU recognizes the in-band PLB-Actuate and PLB-Release
NOTE: This configuration option is only available when the network interface framing is set to ESF.
codes specified by AT&T as well as the bit-oriented FDL messages specified by ANSI (for ESF only).
codes specified by AT&T as well as the bit-oriented FDL messages specified by ANSI.
Bit Stuff: 62411
Next 62411 Part68 Disab Prev
Bit Stuffing. Determines when bit stuffing is performed to meet the ones density requirements for data transmission on the
network. You must choose the maximum number of consecutive zeros the DSU/CSU can receive before it inserts a one.
62411 – Specifies that a one be inserted in the data stream after 15 consecutive zeros or when the density of ones falls
below 12.5% (complies with A T&T TR 62411).
Part68 – Specifies that a one be inserted in the data stream after 80 consecutive zeros (complies with FCC Part 68).
Disab – Disables bit stuffing so that ones density is not enforced.
NOTE: To comply with Canadian DOC CS-03 regulations, equipment installed in Canada must be configured to select
NOTE: To comply with USA Part 68 regulations, equipment installed in the USA must be configured to select Part 68.
NOTE: This configuration option is only available if the network interface line coding format is set to AMI.
Circuit Ident:
Next Edit Clear Prev
Network Circuit Identifier. Specifies the transmission vendor’s circuit identifier for the purpose of facilitating
troubleshooting. The network circuit identifier is an ASCII text string that may be up to 255 characters in length.
Edit – Allows you to edit and/or display the network circuit identifier using the generic text string entry screen.
Clear – Allows you to clear the network circuit identifier. The network circuit identifier is set to a null string.
62411.
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ACCULINK 3163 DSU/CSU
Sync Data Port Configuration
Options
Table C-2
(1 of 3)
Sync Data Port Configuration Options
Port T ype: E530 (Factory 1) V.35 (Factory 2)
Next E530 V.35 RS449 X.21 Prev
Data Port Type. Allows selection of the data port interface type.
E530 – Configures the port as an EIA-530-A compatible interface. EIA-530-A DTEs can be directly connected to a port
connector on the back of the DSU/CSU.
V.35 – Configures the port as a V.35 compatible interface. V.35 DTEs can be connected to a port connector using an
EIA-530-A-to-V.35 adapter cable.
RS449 – Configures the port as an RS449 compatible interface. RS449 DTEs can be connected to a port connector using
an EIA-530-A-to-RS449 adapter cable.
X.21 – Configures the port as an X.21 compatible interface. X.21 DTEs can be connected to a port connector using an
EIA-530-A-to-X.21 adapter cable.
NOTE: If this configuration option is set to X.21, set the All Ones configuration option to RTS or Disab.
Base Rate: Nx64
Next Nx64 Nx56 Prev
Data Port Base Rate. Allows selection of the base rate for the data port. The data rate for the port is a multiple (from
1 to 24) of the base rate specified with this configuration option.
N
Nx64 – Sets the base rate for this port to 64 kbps. The data rate is
Nx56 – Sets the base rate for this port to 56 kbps. The data rate is
Net DCLB: Disab (Factory 1) Both (Factory 2)
Next Disab V.54 FT1 Both Prev
Network Initiated DCLB. Allows the initiation and termination of a Data Channel Loopback (V.54 loop 2) by the receipt of a
V.54 DCLB-actuate sequence or DCLB-release sequence from the network or far-end device. The sequences may be
either V.54 or FT1 (ANSI) compliant sequences.
Disab – Ignores the DCLB-actuate and DCLB-release sequences for this port.
V.54 – Enables DCLB-actuate and DCLB-release sequences that comply with the V.54 standard for ‘‘Inter-DCE signaling
for point to point circuits.”
FT1 – Enables DCLB-actuate and DCLB-release sequences that comply with the ANSI T1.403, Annex B standard for
‘‘In-band signaling for fractional-T1 (FT1) channel loopbacks.”
Both – Enables DCLB-actuate and DCLB-release sequences that comply with either the ANSI or V.54 standard. The type
of actuate and release sequences do not have to match.
x64 kbps, where N is a number from 1 to 24.
N
x56 kbps, where N is a number from 1 to 24.
C-4March 19993163-A2-GB20-10
Page 81
Configuration Options
Table C-2
(2 of 3)
Sync Data Port Configuration Options
Port LB: Disab (Factory 1) Both (Factory 2)
Next Disab DTLB DCLB Both Prev
Port (DTE) Initiated Loopbacks. Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or remote
Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is equivalent to a V.54 loop 3, and DCLB is
equivalent to a V.54 loop 2.) Control of these loopbacks is through the DTE interchange circuits as specified by the V.54
standard.
Disab – Disables control of local DTLBs and remote DCLBs by the DTE connected to this port.
DTLB – Gives control of the local DTLBs for this port to the DTE attached to this port. This loopback is controlled by the
Local Loopback interchange circuit LL (CCITT 141).
DCLB – Gives control of the remote DCLBs for the far-end port connected to this port to the DTE attached to this port.
This loopback is controlled by the Remote Loopback interchange circuit RL (CCITT 140). The far-end equipment must
support in-band V.54 loopbacks.
Both – Gives control of local DTLBs and remote DCLBs to the DTE connected to this port.
All Ones: Both
Next Disab DTR RTS Both Prev
Send All Ones on Data Port Not Ready . Specifies the conditions on the data port that determine when valid data is not
being sent from the DTE. When this condition is detected, all ones are sent to the network on the DS0 channels allocated
to the port.
Disab – Disables the monitoring of interchange circuits from the DTE connected to this port.
DTR – Monitors the DTE Ready interchange circuit CD (CCITT 108/1/2). When DTR is interrupted, all ones are sent to
the network.
RTS – Monitors the Request-to-Send interchange circuit CA (CCITT 105). When RTS is interrupted, all ones are sent to
the network.
Both – Monitors both DTR and RTS. If either is interrupted, all ones are sent to the network.
NOTE: If the Port Type configuration option is set to X.21, set this configuration option to R TS or Disab.
Rcv Yellow: Halt
Next None Halt Prev
Action on Network Yellow Alarm. Specifies the action taken on this port when a Yellow Alarm is received on the network
interface.
None – Makes the data port unaffected by Yellow Alarms received on the network interface.
Halt – Stops the transmission of data on the port and disables the data port when Yellow Alarms are received on the
network interface. When Yellow Alarms are received, all ones are sent on the Received Data interchange circuit BB
(CCITT 104). The Clear-to-Send interchange circuit CB (CCITT 106) is interrupted.
Tx Clock: Int
Next Int Ext Prev
Data Port Transmit Clock. Specifies whether the transmitted data for the port is clocked using an internal clock provided
by the DSU/CSU (synchronized to the clock source specified by the clock source configuration option in the General
configuration option group) or an external clock provided by the DTE connected to the port. When an external clock is
used, it must be synchronized to the same clock source as the DSU/CSU.
Int – Indicates the clock is provided internally by the DSU/CSU on the TXC interchange circuit DB (CCITT 114).
Ext – Indicates the clock is provided externally by the DTE on the XTXC interchange circuit DA (CCITT 113). Use this
selection when the clock source is set to this data port.
C-53163-A2-GB20-10March 1999
Page 82
ACCULINK 3163 DSU/CSU
Table C-2
(3 of 3)
Sync Data Port Configuration Options
InvertTxC: Disab
Next Enab Disab Prev
Invert Transmit Clock. Specifies whether the clock supplied by the DSU/CSU on the TXC interchange circuit DB
(CCITT 114) is phase inverted with respect to the Transmitted Data interchange circuit BA (CCITT 103). This
configuration option is useful when long cable lengths between the DSU/CSU and the DTE are causing data errors.
Enab – Indicates TXC supplied by the DSU/CSU on this port is phase inverted.
Disab – Indicates TXC supplied by the DSU/CSU on this port is not phase inverted.
InvrtData: Disab
Next Enab Disab Prev
Invert Transmitted and Received Data. Specifies whether the port’s transmitted data and received data are logically
inverted before being transmitted or received. This configuration option is useful for applications where HDLC data is
being transported. Inverting the data ensures that the density requirements for the network interface are met.
Enab – Indicates the transmitted data and received data for this port are inverted.
Disab – Indicates the transmitted data and received data for this port are not inverted.
C-6March 19993163-A2-GB20-10
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Configuration Options
Cross Connect
Configuration Options
Table C-3
(1 of 2)
Sync Data Port Assignment Options
Sync Data Port Assignment
Assign To: Network
Network
Network – Assigns this port to DS0 channels on the network interface. This is the only option on the single-port Model
3163 DSU/CSU.
Sync Data Port Assignments
Assign By: Block
Block ACAMI Channel
This configuration option designates the method for assigning DS0 channels to the destination T1 interface.
Block – Allocates DS0 channels to this port by the block method.
ACAMI – Allocates DS0 channels to this port by the Alternate Channel Alternate Mark Inversion method. The difference
between block and ACAMI is that the number of channels allocated with ACAMI is double the number needed for the port
rate. With ACAMI, every alternate DS0 channel does not carry data from the port but always transmits and receives all
ones.
Channel – Allocates DS0 channels to this port by the individual channel method.
NOTE: Changing this configuration option from one method to another (Block, ACAMI, or Channel) deallocates all DS0
Designates the data rate for the port. Available selections depend on the current base rate configured for the port. The
factory default for Nx64 is 384 kbps, and Nx56 is 336 kbps.
NOTES:This selection is not available if the individual channel allocation method (Channel) is selected using the Assign
By field.
Changing this selection from one rate to another deallocates all DS0 channels assigned to the network interface.
C-73163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Table C-3
(2 of 2)
Sync Data Port Assignment Options
Sync Data Port Assignments
N01N02N03N04N05N06N07N08...N24
P1P1P1P1P1P1P1P1...P1
Designates the DS0 channel to allocate to this port.
Line 1 displays the 24 channels for the network interface. Line 2 displays what is allocated to the DS0 channel indicated
in Line 1. Possible values are:
Value
N
nn
P1This DS0 channel is allocated to Port 1.
Meaning
This DS0 channel is allocated to the network interface DS0 channel n, where n is a number from 1 to
24. You cannot modify this value on this screen.
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Page 85
Channel Configuration
Options
Data Port Channel Configuration Options
Channel Config:
Dsply Clear Prt1
Configuration Options
Table C-4
(1 of 2)
NOTE: The configuration options described in this table are made available by selecting Prt1 from the Channel
Data Port Channel. Allows the assignment of a particular port to DS0 channels on the network interface.
Assign By: Block
Next Block ACAMI Chan Prev
Data Port Channel Allocation Method. If NET or DTE is selected using the Assign To configuration option, this
configuration option designates the method for assigning DS0 channels to the destination T1 interface.
Block – Allocates DS0 channels to this port by the block method.
ACAMI – Allocates DS0 channels to this port by the Alternate Channel Alternate Mark Inversion method. The difference
between block and ACAMI is that the number of channels allocated with ACAMI is double the number needed for the port
rate. With ACAMI, every alternate DS0 channel does not carry data from the port but always transmits and receives all
ones.
Chan – Allocates DS0 channels to this port by the individual channel method.
NOTE: Changing this configuration option from one method to another (Block, ACAMI, or Chan) deallocates all DS0
Data Port Rate (appears when using the block or ACAMI channel allocation method, or when a synchronous data port is
assigned to another synchronous data port). Designates the data rate for the port. Available selections depend on the
current base rate configured for the port. The factory default for Nx64 is 384 kbps, and Nx56 is 336 kbps.
NOTES:This configuration option does not appear if the individual channel allocation method (Chan) is selected using the
Config screen.
channels assigned to the network interface.
Assign By configuration option.
Changing this configuration option from one rate to another deallocates all DS0 channels assigned to the
Data Port Channel Allocation (appears for the block and ACAMI methods only). Designates the starting DS0 channel,
N1–N24 for the network interface.
Available selections are only those DS0 channels that provide enough bandwidth (based on the configured data rate) to
be used as a starting channel number.
Select the desired starting channel number by pressing the Function key under that number. When you make the
selection, the DSU/CSU allocates the correct amount of DS0 channels to support the data rate currently configured for
the port.
Clear – Deallocates all DS0 channels for this port from the network interface.
NOTE: This configuration option is not available if the individual channel allocation method (Chan) is selected using the
Assign To: NET
Next NET Prev
Data Port Channel Allocation Destination. NET is the only option on the Model 3163 DSU/CSU.
NET – Assigns this port to DS0 channels on the network interface.
Data Port Channel Allocation (appears for the individual channel method only). Designates the DS0 channel to allocate to
this port.
Line 1 displays the 24 channels for the network interface. Line 2 displays what is allocated to the DS0 channel indicated
in Line 1. Possible values for Line 2 are:
Value
–This DS0 channel is not allocated. You can modify this value on this screen.
Prt1This DS0 channel is allocated to Port 1.
Select the channel by pressing the Function key under that number. To deallocate a port, press the Function key under
that port number. Pressing the Function key under channels assigned to other ports has no effect.
NOTE: The DSU/CSU automatically derives the data rate for the port from the number of DS0 channels allocated.
Meaning
C-10March 19993163-A2-GB20-10
Page 87
Configuration Options
General Configuration Options
Table C-5
General Configuration Options
Clock Src: NET
Next NET Prt1 Int Prev
DSU/CSU Clock Source. Specifies the master clock source for the DSU/CSU. This selection synchronizes all internal
timing and external interface clocks. The clock rate(s) for the external timing interfaces are independent of the input rate
for the master clock. Failure of the clock specified by the Clock Source selection results in automatic fallback to internal
clock.
NET – Configures the network interface as the master clock source.
Prt1 – Configures Port 1 as the master clock source.
Int – Configures the internal clock as the master clock source.
T st Timeout: Enab
Next Enab Disab Prev
Test Timeout. Specifies whether user-initiated loopback and pattern tests have durations that are specified by the
Tst Duration configuration option.
Enab – Loopback and pattern tests initiated on the DSU/CSU have specified durations.
Disab – Disables test timeout. The tests are terminated manually .
NOTE: For DSU/CSUs that are remotely managed through an inband data stream such as the FDL, the recommended
Tst Duration: 10
Next Up Down Save Prev
Test Duration. Specifies the duration (1 to 120 minutes) of user-initiated loopback and pattern tests. (The Tst Timeout
configuration option must be set to Enab.) Use the left or right arrow key to position the cursor on the digit you want to
change. Use the Function keys (Up or Down) to increment or decrement the digit.
Up – Increments the test duration.
Down – Decrements the test duration.
Save – Stores the test duration.
setting is Enab. If tests are inadvertently left in the active state, the Enab setting will allow the test to timeout
(terminate) after a specified time.
C-113163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
User Interface
Configuration Options
Table C-6
(1 of 5)
User Interface Configuration Options
Self-T est: Enab
Next Enab Disab Prev
Initial Self-Test. Specifies whether the DSU/CSU performs a device self-test at power-up and after a device reset.
Enab – Enables a self-test.
Disab – Disables the self-test.
FP Access: Enab
Next Enab Disab Prev
Front Panel Access. Determines whether front panel access or display is allowed at the DSU/CSU.
Enab – Allows the front panel to access and display data.
Disab – Prevents the access and display of data.
FP Pass: Disab
Next Enab Disab Prev
Front Panel Pass-Through. Allows dial-out access to a remote DSU/CSU using the front panel pass-through operation.
Enab – Allows dial-out access to a remote DSU/CSU.
Disab – Prevents dial-out access to a remote DSU/CSU.
Dial-In: Disab
Next Enab Disab Prev
Dial-in Access. Allows dial-in access to the DSU/CSU through the Modem port.
Enab – Allows dial-in access to the DSU/CSU.
Disab – Prevents dial-in access. Incoming calls to the DSU/CSU are not answered.
Password: None
Next None Com Modem Both Prev
Password Mode. Activates a password prompt that prevents access until a password is entered.
None – Does not require a password.
Com – Prompts the communications port user to enter a password.
Modem – Prompts the remote modem port user to enter a password.
Both – Prompts both the communications port user and the remote modem port user to enter a password.
C-12March 19993163-A2-GB20-10
Page 89
Configuration Options
Table C-6
(2 of 5)
User Interface Configuration Options
Com Use: ASCII
Next Mgmt ASCII Term Prev
Communication Port Use. Specifies how the communication port is used.
Mgmt – Configures the communication port as the link to a Telnet system.
ASCII – Configures the communication port as a proprietary ASCII port supporting Front Panel Emulation software and
ASCII alarm messages.
Term – Configures the communication port as the interface to an async terminal.
Com Type: Async
Next Async Sync Prev
Communication Port Type. Specifies whether the communication port uses synchronous or asynchronous operation when
it is configured as the management link.
Async – Configures the communication port for asynchronous operation.
Sync – Configures the communication port for synchronous operation.
NOTE: This configuration option is not available if the Com Use configuration option is set to ASCII, or Term. In these
cases, the communication port is always asynchronous.
Com Clk: Int
Next Int Ext Prev
Communication Port Synchronous Clock. Specifies whether the communication port uses internal or external clocking
when it is configured for synchronous operation.
Int – Configures the communication port for internal clocking.
Ext – Configures the communication port for external clocking.
NOTE: This configuration option is not available if the Com Type configuration option is set to Async.
Com Rate: 9.6
Next 1.2 2.4 4.8 9.6 14.4 19.2 38.4 Prev
Communication Port Rate. Configures the bit rate for the communication port.
1.2 – Sets the bit rate to 1200 bps (for asynchronous operation only).
2.4 – Sets the bit rate to 2400 bps.
4.8 – Sets the bit rate to 4800 bps.
9.6 – Sets the bit rate to 9600 bps.
14.4 – Sets the bit rate to 14,400 bps.
19.2 – Sets the bit rate to 19,200 bps.
38.4 – Sets the bit rate to 38,400 bps. This rate is not supported for carrier-mounted DSU/CSUs.
NOTE: This configuration option is not available if the communication port is configured for synchronous operation and
Char Length: 8
Next 7 8 Prev
the clock source is external.
Communication Port Character Length. Configures the character length (7 or 8 bits) for the communication port.
NOTE: This configuration option must be set to 8 if the communication port is used as the network communication link.
NOTE: This configuration option is not available if the communication port is configured for synchronous operation.
C-133163-A2-GB20-10March 1999
Page 90
ACCULINK 3163 DSU/CSU
Table C-6
(3 of 5)
User Interface Configuration Options
CParity: None
Next None Even Odd Prev
Communication Port Parity . Configures the parity (none, even, or odd) for the communication port.
NOTE: This configuration option is not available if the communication port is configured for synchronous operation.
CStop Bits: 1
Next 1 1.5 2 Prev
Communication Port Stop Bits. Configures the number of stop bits (1, 1.5, or 2) for the communication port.
NOTE: This configuration option is not available if the communication port is configured for synchronous operation.
Ignore DTR: No
Next Yes No Prev
Communication Port Ignore DTR State. Specifies whether the DSU/CSU ignores the state of the Data Terminal Ready
(DTR) input to the communication port.
Yes – DTR is ignored.
No – DTR is not ignored.
NOTE: This configuration option is not available if the communication port is configured for synchronous operation.
CmInActTm: Disab
Next Enab Disab Prev
Communication Port Inactivity Timeout. Specifies whether the communication port disconnects after a period of inactivity
specified by the CmDiscTm configuration option.
Enab – The communication port disconnects after the period of inactivity specified by the CmDiscTm configuration option.
Disab – The communication port does not disconnect due to inactivity.
CmDiscTm: 5
Next Up Down Save Prev
Communication Port Disconnect Time. Specifies the period of time (1 to 60 minutes) before the communication port
disconnects due to inactivity . (The CmInActTm configuration option must be set to Enab.) Use the left or right arrow key to
position the cursor on the digit you want to change. Use the Function keys (Up or Down) to increment or decrement the
digit.
Up – Increments the time delay.
Down – Decrements the time delay.
Save – Stores the time delay for use with inactivity disconnects.
Modem Use: ASCII
Next Mgmt ASCII Term Prev
Modem Port Use. Specifies how the modem port is used.
Mgmt – Configures the modem port as the link to a Telnet system.
ASCII – Configures the modem port as a proprietary ASCII port. This selection supports dial-out ASCII alarm messages
and dial-in/dial-out front panel access.
T erm – Configures the modem port as the interface to an async terminal.
C-14March 19993163-A2-GB20-10
Page 91
Configuration Options
Table C-6
(4 of 5)
User Interface Configuration Options
Modem T ype: Async
Next Async Sync Prev
Modem Type. Specifies whether the port uses synchronous or asynchronous communication if the modem port is
configured as the management link.
NOTE: This configuration option is not available if the Modem Use configuration option is set to ASCII. In this case, the
Modem Rate: 2.4
Next 1.2 2.4 Prev
Modem Port Rate. Configures the bit rate for the modem port.
1.2 – Sets the bit rate at 1200 bps.
2.4 – Sets the bit rate at 2400 bps.
MChar Len: 8
Next 7 8 Prev
modem port is always asynchronous.
Modem Character Length. Configures the character length (number of data bits) for the modem port. This does not
include the start bit (always 1) or the stop bits; 8 is the factory default.
NOTE: This option must be set to 8 to perform PC emulation or pass-through operations.
MParity: None
Next None Even Odd Prev
Modem Parity . Configures the parity for the modem port. None is the factory default.
MStop Bits: 1
Next 1 2 Prev
Modem Port Stop Bits. Configures the number of stop bits for the modem port; 1 is the factory default.
LSpaceDsc: Disab
Next Enab Disab Prev
Long Space Disconnect. Specifies how the modem disconnects a call. This makes call disconnecting more robust and
prevents invalid data at the remote modem if the call is disconnected. To be effective, the remote modem must be
configured to disconnect if it detects continuous space.
MInActTm: Disab
Next Enab Disab Prev
Modem Port Inactivity Timeout. Specifies whether the modem port disconnects after a period of inactivity specified by the
MDiscTm configuration option.
Enab – The modem port disconnects after the period of inactivity specified by the MDiscTm configuration option.
Disab – The modem port does not disconnect due to inactivity.
MDiscTm: 5
Next Up Down Save Prev
Modem Port Disconnect Time. Specifies the period of time (1 to 60 minutes) before the modem port disconnects due to
inactivity. (The MInActTm configuration option must be set to Enab.) Use the left or right arrow key to position the cursor
on the digit you want to change. Use the Function keys (Up or Down) to increment or decrement the digit.
Up – Increments the time delay.
Down – Decrements the time delay.
Save – Stores the time delay for use with inactivity disconnects.
C-153163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Table C-6
(5 of 5)
User Interface Configuration Options
TnSession: Disab
Next Enab Disab Prev
Telnet Session Enable. Specifies whether the DSU/CSU responds to Telnet session requests.
Enab – The DSU/CSU responds to Telnet session requests.
Disab – The DSU/CSU does not respond to Telnet session requests.
TnPaswd: Disab
Next Enab Disab Prev
Telnet Password Mode. Specifies whether a password is required for Telnet access.
Enab – A password is required for Telnet access.
Disab – A password is not required for Telnet access.
TnInActTm: Disab
Next Enab Disab Prev
Telnet Inactivity Timeout. Specifies whether the Telnet session disconnects after a period of inactivity specified by the
TnDiscTm configuration option.
Enab – The Telnet session disconnects after the period of inactivity specified by the TnDiscTm configuration option.
Disab – The Telnet session does not disconnect due to inactivity.
TnDiscTm: 5
Next Up Down Save Prev
Telnet Disconnect Time. Specifies the period of time (1 to 60 minutes) before the Telnet session disconnects due to
inactivity. (The TnInActTm configuration option must be set to Enab.) Use the left or right arrow key to position the cursor
on the digit you want to change. Use the Function keys (Up or Down) to increment or decrement the digit.
Up – Increments the time delay.
Down – Decrements the time delay.
Save – Stores the time delay for use with inactivity disconnects.
C-16March 19993163-A2-GB20-10
Page 93
Configuration Options
Alarm Configuration Options
Table C-7
(1 of 2)
Alarm Configuration Options
Alrm Msg: Disab
Next Disab Modem Com Both Prev
Alarm Messages. Controls the generation of alarm messages, which are routed to an ASCII terminal or printer attached to
the communication port and/or the modem port.
Disab – Prevents an alarm message for any alarm conditions.
Modem – Enables alarm messages routed to the modem port.
Com – Enables alarm messages routed to the communication port.
Both – Enables alarm messages routed to both the modem and communication ports.
NOTE: Alarm messages are only sent to the communication port if the Com Use configuration option is set to ASCII,
DialOut: Disab
Next Enab Disab Prev
otherwise the alarm messages are discarded.
Alarm Dial Out. Controls whether generated alarm messages initiate a call if the integral modem connection or carrier
external communication port device connection has not already been established. When enabled, a call is placed to the
phone number contained in the alarm directory (directory A). If the call cannot be completed and the retry option is
enabled, the alarm message is held until the call is completed or has been retried once. If more than one alarm message
is received while waiting for a call retry , only the highest priority alarm message received is held; all previous messages
are discarded.
Enab – Enables automatic call initiation (dial out) if an alarm message needs to be sent.
Disab – Disables automatic call initiation.
Call Retry: Disab
Next Enab Disab Prev
Call Retry on Alarm. Determines whether a call that cannot complete (busy , no answer, etc.) is retried. This affects calls
that are initiated in attempting to send an alarm message to the modem port or carrier external communication port
device. If call retry is specified, the DSU/CSU attempts to complete the call after a configurable delay .
Enab – Enables call retry . If enabled, the call is retried once per alarm message. A delay as specified by the Dial-Delay
time is imposed between call attempts. If an alternate dial-out directory is specified, both the alarm directory as well as
the alternate directory are retried once.
Disab – Disables call retry. If a call setup cannot be completed it is not retried.
Dial Delay: 5
Next 1 2 3 4 5 6 7 8 9 10 Prev
Dial Out Delay Time on Alarm. Specifies the number of minutes to wait between successive dial-out alarms and between
retry attempts after failed alarm dial-outs. The factory default is 5 minutes.
C-173163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Table C-7
(2 of 2)
Alarm Configuration Options
AltDialDir: None
Next None 1 2 3 4 5 Prev
Alternate Dial-Out Directory for Alarm. Specifies whether a call that cannot be completed (busy , no answer, etc.) is retried
using an alternate phone number. This af fects calls that are initiated in an attempt to send an alarm message to the
modem port or carrier external communication port device. The alternate phone number to try is contained in one of the
five call directories. If call retry is enabled, the initial call is retried at the original number once before a call attempt to the
alternate number is tried. If the call is not completed at the alternate number, it too is retried once. The alternate dial-out
option applies to each alarm event. Once a call for an alarm message either completes or fails all retry attempts, the next
alarm attempts to establish a call to the phone number contained in the alarm directory .
None – Specifies that alternate alarm dial-out is not performed if a call cannot be completed to the telephone number
contained in the alarm directory .
1–5 – Specifies the call directory that contains the phone number to call if a call cannot be completed to the telephone
number contained in the alarm directory .
Excessive Error Rate Threshold. Sets the error rate threshold that determines if an Excessive Error Rate (EER) condition
is declared. This rate is determined by the ratio of the number of CRC6 errors to the total number of bits received over a
set period of time.
Select from the following:
10E-4 – EER is declared if more than 1,535 CRC6 errors are detected within 10 seconds (factory default).
10E-5 – EER is declared if more than 921 CRC6 errors are detected within 60 seconds.
10E-6 – EER is declared if more than 92 CRC6 errors are detected within 60 seconds.
10E-7 – EER is declared if more than 9 CRC6 errors are detected within 60 seconds.
10E-8 – EER is declared if more than 41 CRC6 errors are detected in three 15-minute intervals.
10E-9 – EER is declared if more than 4 CRC6 errors are detected in three 15-minute intervals.
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Configuration Options
Management Configuration
Options
Table C-8
(1 of 3)
Management Configuration Options
IP Adr:
Next Edit Clear Prev
IP Address for the DSU/CSU. Specifies the IP address needed to access the DSU/CSU. Since this IP Address is not
bound to a particular port, it can be used for remote access via the FDL management link.
Edit – Allows you to edit and/or display the IP address for the DSU/CSU.
Clear – Allows you to clear the IP address for the DSU/CSU. The IP address is set to 000.000.000.000.
NetMask:
Next Edit Clear Prev
Subnet Mask for the DSU/CSU. Specifies the subnet mask needed to access the DSU/CSU. Since this subnet mask is
not bound to a particular port, it can be used for remote access via the FDL management link.
Edit – Allows you to edit and/or display the subnet mask for the DSU/CSU.
Clear – Allows you to clear the subnet mask for the DSU/CSU. The subnet mask is set to 000.000.000.000. If the subnet
mask is 000.000.000.000, the IP protocol creates a default subnet mask based on the class of the IP address
(Class A: 255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000).
Com IP Adr:
Next Edit Clear Prev
Com Port IP Address. Specifies the IP address for the communication port if the Com Use configuration option is set to
Mgmt.
Edit – Allows you to edit or display the IP address for the communication port.
Clear – Allows you to clear the IP address for the communication port. The IP address is set to 000.000.000.000.
Com NetMask:
Next Edit Clear Prev
Subnet Mask for the Communication Port. Specifies the subnet mask for the communication port if the Com Use
configuration option is set to Mgmt.
Edit – Allows you to edit and/or display the subnet mask for the communication port.
Clear – Allows you to clear the subnet mask for the communication port. The subnet mask is set to 000.000.000.000. If
the subnet mask is 000.000.000.000, the IP protocol creates a default subnet mask based on the class of the IP address
(Class A: 255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000).
C-193163-A2-GB20-10March 1999
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ACCULINK 3163 DSU/CSU
Table C-8
(2 of 3)
Management Configuration Options
Com Link: PPP
Next PPP SLIP Prev
Com Port Link Layer Protocol. Specifies the link layer protocol for the communication port if the Com Use configuration
option is set to Mgmt.
PPP – Specifies PPP as the link layer protocol for the IP management link on the communication port.
SLIP – Specifies SLIP as the link layer protocol for the IP management link on the communication port. The
communication port must be configured for asynchronous operation to support SLIP.
Modem IP Adr:
Next Edit Clear Prev
Modem Port IP Address. Specifies the IP address for the modem port if the Modem Use configuration option is set to
Mgmt.
Edit – Allows you to edit or display the IP address for the modem port.
Clear – Allows you to clear the IP address for the modem port. The IP address is set to 000.000.000.000.
Mdm NetMask:
Next Edit Clear Prev
Subnet Mask for the Modem Port. Specifies the Subnet Mask for the modem port if the Modem Use configuration option
is set to Mgmt.
Edit – Allows you to edit and/or display the Subnet Mask for the modem port.
Clear – Allows you to clear the Subnet Mask for the modem port. The Subnet Mask is set to 000.000.000.000. If the
Subnet Mask is 000.000.000.000, the IP protocol creates a default Subnet Mask based on the class of the IP address
(Class A: 255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000).
Alt Mdm IP Adr:
Next Edit Clear Prev
Alternate Modem Port IP Address. Specifies the alternate IP address for the modem port if the Modem Use configuration
option is set to Mgmt. This IP address is needed if a call attempt does not complete on the primary alarm phone number
(contained in the alarm directory) and the alternate dial out directory is used to try another phone number.
Edit – Allows you to edit or display the alternate IP address for the modem port.
Clear – Allows you to clear the alternate IP address for the modem port. The IP address is set to 000.000.000.000.
Alt Mdm NetMask:
Next Edit Clear Prev
Alternate Subnet Mask for the Modem Port. Specifies the alternate Subnet Mask for the modem port if the Modem Use
configuration option is set to Mgmt. This Subnet Mask is needed if a call attempt does not complete on the primary alarm
phone number (contained in the alarm directory) and the alternate dial-out directory is used to try another phone number.
If this configuration option contains a non-zero Subnet Mask, it is used as the Subnet Mask for the modem port if a call is
completed to the alternate phone number.
Edit – Allows you to edit and/or display the alternate Subnet Mask for the modem port.
Clear – Allows you to clear the alternate Subnet Mask for the modem port. The Subnet Mask is set to 000.000.000.000. If
the Subnet Mask is 000.000.000.000, the IP protocol creates a default Subnet Mask based on the class of the IP address
(Class A: 255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000).
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Configuration Options
Table C-8
(3 of 3)
Management Configuration Options
Modem Link: PPP
Next PPP SLIP Prev
Modem Port Link Layer Protocol. Specifies the link layer protocol for the modem port if the Modem Use configuration
option is set to Mgmt.
PPP – Specifies PPP as the link layer protocol for the IP management link on the modem port.
SLIP – Specifies SLIP protocol as the link layer protocol for the IP management link on the modem port. The modem port
must be configured for asynchronous operation to support SLIP.
Def Netwk: None
Next None Com Modem FDL Prev
Default Network Destination. Specifies the default network destination. This configuration option specifies where the
default network is connected. For example, if the default network is connected to the communication port, you select
Com. If the default network is connected to the far-end 31xx Series device over the FDL, you select FDL. The routing
protocol uses the default network destination to route data that does not have a specific route.
None – No default network destination. Data that cannot be routed is discarded.
Com – The default network destination is the communication port. This selection only appears if the Com Use
configuration option is set to Mgmt.
Modem – The default network destination is the modem port. This selection only appears if the Modem Use configuration
option is set to Mgmt.
FDL – The default network destination is FDL. This selection only appears if the FDL management link is enabled.
NOTE: If the chosen default network link is disabled or down, data is discarded. Return to this menu and choose another
default network.
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ACCULINK 3163 DSU/CSU
Configuration Worksheets
This section contains worksheets to be used when
configuring your DSU/CSU in the network. In the tables,
default settings for Factory 1 are indicated by bold type.
It is recommended that you copy these worksheets before
marking on them.
Port Options
Port TypeE530, V.35, RS449, X.21
Base RateNx64, Nx56
Net DCLBDisab, V.54, FT1, Both
Port LBDisab, DTLB, DCLB, Both
All OnesDisab, DTR, RTS, Both
Rcv YellowNone, Halt
Tx ClockInt, Ext
InvertTxCEnab, Disab
InvrtDataEnab, Disab
Value (Default in Bold)
Net OptionsValue (Default in Bold)
NET FramingD4, ESF
NET CodingAMI, B8ZS
LBO0.0, –7.5, –15, –22.5
ANSI PRMEnab, Disab
Mgmt LinkEnab, Disab
NET LLBEnab, Disab
NET PLBEnab, Disab
BitStuff62411, Part68, Disab
Circuit IdentEdit, Clear
IP AdrEdit, Clear
NetMaskEdit, Clear
Com IP AdrEdit, Clear
Com NetMaskEdit, Clear
Com LinkPPP, SLIP
Modem IP AdrEdit, Clear
Mdm NetMaskEdit, Clear
Alt Mdm IP AdrEdit, Clear
Alt Mdm NetMaskEdit, Clear
Modem LinkPPP, SLIP
Def NetwkNone, Com, Modem, FDL