Adtran Cable T1 Esf Csu Ace Users Manual

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T1 ESF CSU ACE
User Manual
1204025L1

61204025L1-1B
September 2004

T1 ESF CSU ACE

Trademarks
Any brand names and product names included in this manual are trademarks, registered trademarks, or
trade names of their respective holders.

To the Holder of the Manual
The contents of this manual are current as of the date of publication. ADTRAN reserves the right to change
the contents without prior notice.
In no event will ADTRAN be liable for any special, incidental, or consequential damages or for
commercial losses even if ADTRAN has been advised thereof as a result of issue of this publication.

901 Explorer Boulevard
P.O. Box 140000
Huntsville, AL 35814-4000
Phone: (256) 963-8000
©2004 ADTRAN, Inc.
All Rights Reserved.
Printed in U.S.A.

61204025L1-1B

Notes provide additional useful information.

Cautions signify information that could prevent service interruption.

Warnings provide information that could prevent damage to the equipment or
endangerment to human life.

Safety Instructions
When using your telephone equipment, please follow these basic safety precautions to reduce the risk of
fire, electrical shock, or personal injury:
1. Do not use this product near water, such as a bathtub, wash bowl, kitchen sink, laundry tub, in a
wet basement, or near a swimming pool.
2. Avoid using a telephone (other than a cordless-type) during an electrical storm. There is a remote
risk of shock from lightning.
3. Do not use the telephone to report a gas leak in the vicinity of the leak.
4. Use only the power cord, power supply, and/or batteries indicated in the manual. Do not dispose of
batteries in a fire. They may explode. Check with local codes for special disposal instructions.

Save These Important Safety Instructions

61204025L1-1B

Affidavit Requirements for Connection to Digital Services
•

•

An affidavit is required to be given to the telephone company whenever digital terminal equipment
without encoded analog content and billing protection is used to transmit digital signals containing
encoded analog content which are intended for eventual conversion into voiceband analog signals and
transmitted on the network.
The affidavit shall affirm that either no encoded analog content or billing information is being
transmitted or that the output of the device meets Part 68 encoded analog content or billing protection
specifications.
End user/customer will be responsible for filing an affidavit with the local exchange carrier when
connecting unprotected customer premise equipment (CPE) to 1.544 Mbps or subrate digital services.

Until such time as subrate digital terminal equipment is registered for voice applications, the affidavit
requirement for subrate services is waived.

61204025L1-1B

Affidavit for Connection of Customer Premises Equipment
to 1.544 Mbps and/or Subrate Digital Services
For the work to be performed in the certified territory of ___________________ (telco name)
State of ________________
County of ________________
I, _______________________ (name), ____________________________________ (business address),
____________________ (telephone number) being duly sworn, state:
I have responsibility for the operation and maintenance of the terminal equipment to be connected to 1.544 Mbps and/or ________ subrate
digital services. The terminal equipment to be connected complies with Part 68 of the FCC rules except for the encoded analog content and
billing protection specifications. With respect to encoded analog content and billing protection:
( )

I attest that all operations associated with the establishment, maintenance, and adjustment of the digital CPE with respect to analog content
and encoded billing protection information continuously complies with Part 68 of the FCC Rules and Regulations.

( )

The digital CPE does not transmit digital signals containing encoded analog content or billing information which is intended to be decoded
within the telecommunications network.

( )

The encoded analog content and billing protection is factory set and is not under the control of the customer.

I attest that the operator(s)/maintainer(s) of the digital CPE responsible for the establishment, maintenance, and adjustment of the
encoded analog content and billing information has (have) been trained to perform these functions by successfully having completed one
of the following (check appropriate blocks):
( )

A training course provided by the manufacturer/grantee of the equipment used to encode analog signals; or

( )

A training course provided by the customer or authorized representative, using training materials and instructions provided by the
manufacturer/grantee of the equipment used to encode analog signals; or

( )

An independent training course (e.g., trade school or technical institution) recognized by the manufacturer/grantee of the equipment
used to encode analog signals; or

( )

In lieu of the preceding training requirements, the operator(s)/maintainer(s) is (are) under the control of a supervisor trained in
accordance with _________ (circle one) above.

I agree to provide ______________________ (telco’s name) with proper documentation to demonstrate compliance with the information as
provided in the preceding paragraph, if so requested.
_________________________________Signature
_________________________________Title
_________________________________ Date
Transcribed and sworn to before me
This ________ day of _______________, _______

_________________________________
Notary Public

My commission expires:
_________________________________

61204025L1-1B

FCC regulations require that the following information be provided in this manual:
1. This equipment complies with Part 68 of FCC rules and requirements adopted by ACTA. On the
equipment housing is a label that contains, among other information, a product identifier in the
format US: AAAEQ##TXXXX. If requested, provide this information to the telephone company.
2. If this equipment causes harm to the telephone network, the telephone company may temporarily
discontinue service. If possible, advance notification is given; otherwise, notification is given as
soon as possible. The telephone company will advise the customer of the right to file a complaint
with the FCC.
3. The telephone company may make changes in its facilities, equipment, operations, or procedures
that could affect the proper operation of this equipment. Advance notification and the opportunity
to maintain uninterrupted service are given.
4. If experiencing difficulty with this equipment, please contact ADTRAN for repair and warranty
information. The telephone company may require this equipment to be disconnected from the
network until the problem is corrected or it is certain the equipment is not malfunctioning.
5. This unit contains no user-serviceable parts.
6. An FCC compliant telephone cord with a modular plug is provided with this equipment. This
equipment is designed to be connected to the telephone network or premises wiring using an FCC
compatible modular jack, which is compliant with Part 68 and requirements adopted by ACTA.
7. The following information may be required when applying to the local telephone company for a
dial-up line for the V.34 modem:
Service Type

REN/SOC

FIC

USOC

1.544 Mbps - SF

6.0N

04DU9-BN

RJ48C

1.544 Mbps - SF and B8ZS

6.0N

04DU9-DN

RJ48C

1.544 Mbps - ESF

6.0N

04DU9-1KN

RJ48C

1.544 Mbps - ESF and B8ZS

6.0N

04DU9-1SN

RJ48C

8. The REN is useful in determining the quantity of devices you may connect to your telephone line
and still have all of those devices ring when your number is called. In most areas, the sum of the
RENs of all devices should not exceed five. To be certain of the number of devices you may
connect to your line as determined by the REN, call your telephone company to determine the
maximum REN for your calling area.
9. This equipment may not be used on coin service provided by the telephone company. Connection
to party lines is subject to state tariffs. Contact your state public utility commission or corporation
commission for information.

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Federal Communications Commission Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio frequencies. 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.

Shielded cables must be used with this unit to ensure compliance with Class A FCC limits.

Changes or modifications to this unit not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

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Industry Canada Compliance Information
Notice: The Industry Canada label applied to the product (identified by the Industry Canada logo or the
“IC:” in front of the certification/registration number) signifies that the Industry Canada technical
specifications were met.
Notice: The Ringer Equivalence Number (REN) for this terminal equipment is supplied in the
documentation or on the product labeling/markings. The REN assigned to each terminal device indicates
the maximum number of terminals that can be connected to a telephone interface. The termination on an
interface may consist of any combination of devices subject only to the requirement that the sum of the
RENs of all the devices should not exceed five (5).

Canadian Emissions Requirements
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus
as set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the
Department of Communications.
Cet appareil numérique respecte les limites de bruits radioelectriques applicables aux appareils numériques
de Class A prescrites dans la norme sur le materiel brouilleur: “Appareils Numériques,” NMB-003 edictee
par le ministre des Communications.

61204025L1-1B

Warranty and Customer Service
ADTRAN will repair and return this product within 5 years from the date of shipment if it does not meet its
published specifications or fails while in service. For detailed warranty, repair, and return information refer
to the ADTRAN Equipment Warranty and Repair and Return Policy Procedure.
Return Material Authorization (RMA) is required prior to returning equipment to ADTRAN.
For service, RMA requests, or further information, contact one of the numbers listed at the end of this
section.

LIMITED PRODUCT WARRANTY
ADTRAN warrants that for 5 years from the date of shipment to Customer, all products manufactured by
ADTRAN will be free from defects in materials and workmanship. ADTRAN also warrants that products
will conform to the applicable specifications and drawings for such products, as contained in the Product
Manual or in ADTRAN’s internal specifications and drawings for such products (which may or may not be
reflected in the Product Manual). This warranty only applies if Customer gives ADTRAN written notice of
defects during the warranty period. Upon such notice, ADTRAN will, at its option, either repair or replace
the defective item. If ADTRAN is unable, in a reasonable time, to repair or replace any equipment to a
condition as warranted, Customer is entitled to a full refund of the purchase price upon return of the
equipment to ADTRAN. This warranty applies only to the original purchaser and is not transferable
without ADTRAN’s express written permission. This warranty becomes null and void if Customer
modifies or alters the equipment in any way, other than as specifically authorized by ADTRAN.
EXCEPT FOR THE LIMITED WARRANTY DESCRIBED ABOVE, THE FOREGOING
CONSTITUTES THE SOLE AND EXCLUSIVE REMEDY OF THE CUSTOMER AND THE
EXCLUSIVE LIABILITY OF ADTRAN AND IS IN LIEU OF ANY AND ALL OTHER WARRANTIES
(EXPRESSED OR IMPLIED). ADTRAN SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES,
INCLUDING (WITHOUT LIMITATION), ALL WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. SOME STATES DO NOT ALLOW THE EXCLUSION
OF IMPLIED WARRANTIES, SO THIS EXCLUSION MAY NOT APPLY TO CUSTOMER.
In no event will ADTRAN or its suppliers be liable to the Customer for any incidental, special, punitive,
exemplary or consequential damages experienced by either the Customer or a third party (including, but
not limited to, loss of data or information, loss of profits, or loss of use). ADTRAN is not liable for
damages for any cause whatsoever (whether based in contract, tort, or otherwise) in excess of the amount
paid for the item. Some states do not allow the limitation or exclusion of liability for incidental or
consequential damages, so the above limitation or exclusion may not apply to the Customer.

61204025L1-1B

Customer Service, Product Support Information, and Training
ADTRAN will repair and return this product if within 5 years from the date of shipment the product does
not meet its published specification or the product fails while in service.
A return material authorization (RMA) is required prior to returning equipment to ADTRAN. For service,
RMA requests, training, or more information, use the contact information given below.
Repair and Return

If you determine that a repair is needed, please contact our Customer and Product Service (CAPS)
department to have an RMA number issued. CAPS should also be contacted to obtain information
regarding equipment currently in house or possible fees associated with repair.
CAPS Department

(256) 963-8722

Identify the RMA number clearly on the package (below address), and return to the following address:
ADTRAN Customer and Product Service
901 Explorer Blvd. (East Tower)
Huntsville, Alabama 35806
RMA # _____________
Pre-Sales Inquiries and Applications Support

Your reseller should serve as the first point of contact for support. If additional pre-sales support is needed,
the ADTRAN Support web site provides a variety of support services such as a searchable knowledge
base, latest product documentation, application briefs, case studies, and a link to submit a question to an
Applications Engineer. All of this, and more, is available at:
http://support.adtran.com

When needed, further pre-sales assistance is available by calling our Applications Engineering
Department.
Applications Engineering (800) 615-1176
Post-Sale Support

Your reseller should serve as the first point of contact for support. If additional support is needed, the
ADTRAN Support web site provides a variety of support services such as a searchable knowledge base,
updated firmware releases, latest product documentation, service request ticket generation and troubleshooting tools. All of this, and more, is available at:
http://support.adtran.com

When needed, further post-sales assistance is available by calling our Technical Support Center. Please

61204025L1-1B

have your unit serial number available when you call.
Technical Support

(888) 4ADTRAN

Installation and Maintenance Support

The ADTRAN Custom Extended Services (ACES) program offers multiple types and levels of installation
and maintenance services which allow you to choose the kind of assistance you need. This support is
available at:
http://www.adtran.com/aces

For questions, call the ACES Help Desk.
ACES Help Desk

(888) 874-ACES (2237)

Training

The Enterprise Network (EN) Technical Training Department offers training on our most popular products.
These courses include overviews on product features and functions while covering applications of
ADTRAN’s product lines. ADTRAN provides a variety of training options, including customized training
and courses taught at our facilities or at your site. For more information about training, please contact your
Territory Manager or the Enterprise Training Coordinator.

61204025L1-1B

Training Phone

(800) 615-1176, ext. 7500

Training Fax

(256) 963-6700

Training Email

training@adtran.com

61204025L1-1B

Table of Contents
Chapter 1 Introduction ...........................................................................................................19
T1/FT1 Overview ...................................................................................................................19
T1 Service Offerings ...............................................................................................................19
T1 ESF CSU ACE Overview ..................................................................................................19
Features .............................................................................................................................21
Interface Features ........................................................................................................22
Four Methods of Control ........................................................................................................23
Front Panel ........................................................................................................................23
ADTRAN PC Program .....................................................................................................23
SNMP ................................................................................................................................23
ASCII Terminal ................................................................................................................23
T1 ESF CSU ACE Testing .....................................................................................................24
Self Test ............................................................................................................................24
Loopback Tests .................................................................................................................25
Network Loopbacks ....................................................................................................25
DTE Interface Loopbacks ...........................................................................................25
Pattern Generation ............................................................................................................26
All Ones ......................................................................................................................26
All Zeroes ...................................................................................................................26
1 in 8 (1:8) ...................................................................................................................26
Applications ............................................................................................................................26
Chapter 2 Installation ..............................................................................................................29
Unpack and Inspect .................................................................................................................29
Shipped by ADTRAN .......................................................................................................29
Provided by Customer ......................................................................................................29
Power Connection ...................................................................................................................29
Wiring .....................................................................................................................................30
RJ-48C Connectors ...........................................................................................................30
EIA-232 Connector ...........................................................................................................30
Power-Up Testing and Initialization .......................................................................................31
Self Test ............................................................................................................................31
Chapter 3 Operation ................................................................................................................33
Front Panel Operation .............................................................................................................33
General Front Panel Menu Operation .....................................................................................34
Description of Menu Tools ...............................................................................................34
Data Field ....................................................................................................................34
Display Field ...............................................................................................................34
Arrows ........................................................................................................................34
Example Menu Operation .................................................................................................34

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Table of Contents

T1 ESF CSU ACE User Manual

Selecting a Main Menu Item .......................................................................................34
Selecting a Submenu Item ..........................................................................................35
Setting/Cancelling the Data Field .....................................................................................35
View Display Only Data Fields ........................................................................................36
Exiting or Returning to Previous Menus ..........................................................................36
Menu Structure .......................................................................................................................36
Detailed Menu Operation ........................................................................................................38
1)STATUS ..................................................................................................................38
2)CONFIG ..................................................................................................................42
3)UTIL ........................................................................................................................46
4)TEST ........................................................................................................................48
Appendix A Pinouts ....................................................................................................................51
Appendix B Specification Summary .........................................................................................53
Specifications and Features ....................................................................................................53
Appendix C Acronyms/Abbreviations ......................................................................................55
Appendix D Glossary ..................................................................................................................59

61204025L1-1C

List of Figures
Figure 1-1. T1 ESF CSU ACE Application .............................................................................. 20
Figure 1-2. T1 ESF CSU ACE Front View ............................................................................... 20
Figure 1-3. T1 ESF CSU Rear View ......................................................................................... 21
Figure 1-4. Jack Signal Directions ............................................................................................ 21
Figure 1-5. Network Loopback Tests ........................................................................................ 25
Figure 1-6. DTE Interface Loopback ........................................................................................ 25
Figure 1-7. General Data Application ....................................................................................... 27
Figure 1-8. General Voice Application ..................................................................................... 28
Figure 1-9. Channel Bank Application ..................................................................................... 28
Figure 3-1. T1 ESF CSU ACE FRONT PANEL ...................................................................... 33
Figure 3-2. Selecting a menu item from the Main Menu .......................................................... 34
Figure 3-3. Menu with Additional Item(s) Not Shown ............................................................. 34
Figure 3-4. Submenu Indicating Additional Items Not Shown ................................................. 35
Figure 3-5. Editing a Data Field ................................................................................................ 35
Figure 3-6. The Four Opening Menus ....................................................................................... 36
Figure 3-7. T1 ESF CSU ACE Menu Tree ............................................................................... 37
Figure 3-8. Four Opening Menus and First Level Submenus ................................................... 38
Figure 3-9. Status Menu Tree .................................................................................................... 39
Figure 3-10. First Menu of NI PERF RPTS Menu ..................................................................... 40
Figure 3-11. Performance Counter Screen .................................................................................. 40
Figure 3-12. First Current NI Errors/Alarms Screen ................................................................... 41
Figure 3-13. Clear History Screen ............................................................................................... 41
Figure 3-14. Configuration Menu Tree ....................................................................................... 42
Figure 3-15. Network (NI) Submenu .......................................................................................... 42
Figure 3-16. First 2)UNIT Submenu SCreen .............................................................................. 45
Figure 3-17. Utility Menu Tree ................................................................................................... 47
Figure 3-18. Re-initialize Unit/Address Screen .......................................................................... 47
Figure 3-19. Test Menu Tree ....................................................................................................... 48
Figure 3-20. Local Loopback Test Screen .................................................................................. 49
Figure 3-21. Self Test Result Screen ........................................................................................... 50

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List of Figures

T1 ESF CSU ACE User Manual

61204025L1-1B

List of Tables
Table A-1. RJ-48C Connector Pin Assignments......................................................................... 51
Table A-2. EIA-232 Connector Pin Assignments....................................................................... 51

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List of Tables

T1 ESF CSU ACE User Manual

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Chapter 1

Introduction

T1/FT1 OVERVIEW
T1 digital communication links have been used by telcos for the transmission of voice since the early
sixties. The D4 channel bank is an example of a T1 digital carrier system that was introduced in the midseventies and is still widely used by the telcos. Communication demands of business continued to grow to
the point that the telcos began offering T1 service directly to the public. D4 channel banks were used for
T1 in corporate network topographies for voice. The technological advances in computer development also
created a demand for T1 data communication, which now is a large part of the T1 traffic.

T1 SERVICE OFFERINGS
T1 is a digital service delivered to the user over two pairs of wires from the service provider. The signal
operates at 1.544 Mbps and is usually extended by repeaters installed approximately every mile after the
first 6000 feet. The T1 signal is divided into 24 time slots which operate at 64 kbps (DS0s). Each time slot
is occupied by digitized voice or by data.
The T1 signal originally used a type of framing known as D4 superframe (SF), which identifies how the T1
is multiplexed. An enhancement of that framing format, called extended superframe (ESF), is available.
ESF provides a non-disruptive means of full-time monitoring on the digital facility. It was originally used
by service providers to monitor the performance of their service offering. Since the introduction of ESF,
equipment installed in private networks can also provide this performance information to the user.

T1 ESF CSU ACE OVERVIEW
Most carriers (regional or local telcos), when supplying a T1 line to customer premises equipment (CPE),
require an interface to monitor the T1 line. The T1 ESF CSU ACE (extended superframe channel service
unit advanced communication equipment) provides the required interface between the CPE (such as DSUs,
channel banks, T1 multiplexers, and PBXs) and telco or private T1 facilities. Figure 1-1 depicts a typical
application.

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Chapter 1. Introduction

T1 ESF CSU ACE User Manual

T1 ESF CSU ACE
PWR

ERR
NET

ALM

ERR
CPE

ALM

RMT
LB

Figure 1-1. T1 ESF CSU ACE Application

The T1 ESF CSU ACE provides surge protection, signal regeneration, alarms, and loopbacks necessary for
circuit operation and fault isolation. The unit provides the simultaneous use of performance report
messages of ANSI T1.403 and maintenance messages of AT&T TR54016. The T1 ESF CSU ACE also
provides conversion from SF to ESF framing formats, allowing older SF data terminal equipment (DTE) to
take advantage of the superior diagnostic capabilities of ESF T1 facilities.
The unit complies with Part 68 of FCC Rules and with applicable sections of AT&T 62411, ANSI T1.102,
and T1.403.
Figure 1-2 shows the front of the T1 ESF CSU ACE, and Figure 1-3 shows the back of the T1 ESF CSU
ACE. Figure 1-4 shows the jack signal directions.

Figure 1-2. T1 ESF CSU ACE Front View

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T1 ESF CSU ACE User Manual

Chapter 1. Introduction

Figure 1-3. T1 ESF CSU Rear View

Figure 1-4. Jack Signal Directions

Features
The following features give the T1 ESF CSU ACE many advantages over other products of its kind:
•
•
•
•
•
•
•

Smallest T1 ESF CSU ACE in the industry.
Front panel interface eliminates the need for a terminal to configure the T1 ESF CSU ACE.
Automatic ESF to D4 frame conversion.
Wall mount NEC Class 2, 12 VDC power supply eliminates the need for an external power supply.
Can be wall mounted to virtually any surface. There are rubber feet on the unit for use on a table top.
Can configure a modem so that it does not have to be configured before installation.
Backs up configuration data in EEPROM.

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Chapter 1. Introduction

T1 ESF CSU ACE User Manual

Interface Features
NI (Labeled NET)

The network interface (NI) port complies with the applicable ANSI and AT&T standards. Its features
include the following:
•
•
•
•
•
•

D4 or ESF framing
AMI or B8ZS coding
Configurable LBO
Network performance monitoring and reporting
Local and remote test loopbacks
Extensive self test

TI (Labeled CPE)

Features of the terminal interface (TI) include the following:
•
•
•
•

D4 or ESF framing (independent of NI)
AMI or B8ZS coding
Transmit LBO to 655 feet
DTE loopback

Control Port Input (Labeled EIA-232)

Features of the control port include the following:
•
•
•
•

EIA-232 input from a PC or a modem for control of the T1 ESF CSU ACE
Up to 9600 baud operation
Acts as input for PC or proxy agent control
VT100 terminal interface

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T1 ESF CSU ACE User Manual

Chapter 1. Introduction

FOUR METHODS OF CONTROL
Front Panel
The front panel provides complete and easy control of all items that can be configured through
menu-guided options. The front panel LCD displays the status of operation and performance reports for the
unit. Chapter 3 contains information on front panel operation and all the menu options.

ADTRAN PC Program
T-Watch is the ADTRAN PC control program. It provides complete control over the configuration of the
T1 ESF CSU ACE through a graphic interface. The T-Watch program displays the same status and
performance data as the front panel LCD. This data is displayed in the form of tables and graphs.
The T-Watch program has the following capabilities:
•
•

Interface with modem permits dialing into a remote T1 ESF CSU ACE location to configure the unit or
read the unit’s status or performance.
Performance data read from the units can be exported in a file which is compatible with common
spreadsheet programs.

SNMP
The ADTRAN T1 ESF CSU ACE supports the Simple Network Management Protocol (SNMP) through
the ADTRAN Advisor SNMP Proxy Agent (1950007L1) to a network management system such as
OpenView® or SunNet Manager™. The proxy agent runs on a PC and can interface to the T1 ESF CSU
ACE directly or through a modem, in the same manner as the T-Watch PC programs.

ASCII Terminal
The ADTRAN T1 ESF CSU ACE recognizes an escape sequence that puts the unit into the ASCII terminal
mode. After receiving the sequence, the T1 ESF CSU ACE sends front panel information to the terminal.
This interface acts exactly like the front panel, but the advantage is that it can be accessed remotely
(through a modem). The escape sequence is:

The terminal or terminal emulation software must be VT100 compatible.

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T1 ESF CSU ACE User Manual

T1 ESF CSU ACE TESTING
The T1 ESF CSU ACE offers three forms of testing:
•
•
•

Self test
Loopback tests
Pattern generation

Self Test
The self test checks the integrity of the electronic components’ internal operation by performing memory
tests and sending and verifying data test patterns through all internal interfaces. Although actual user data
cannot be passed during these tests, the self test can be run with the network and DTE interfaces in place
and will not disturb any external interface.
The self test automatically executes upon power-up. It can also be initiated from a front panel menu or
from the control port.
In addition to the specified self tests, background tests are run on various parts of the internal electronics.
These run during normal operation to confirm continued correct functioning. The background tests include
the standard background network performance monitoring as required by ANSI T1.403 and AT&T 54016,
for which the results are stored.

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T1 ESF CSU ACE User Manual

Chapter 1. Introduction

Loopback Tests
A number of different loopbacks can be invoked locally from the front panel, by T-Watch commands, or
remotely by using special inband codes (AT&T network loop-up and loop-down codes). Additionally, the
loopbacks can be remotely controlled by out-of-band commands using the T1 ESF FDL, or from T-Watch
using a modem connection. A discussion of network loopbacks and DTE interface loopbacks follows.
Network Loopbacks
There are two types of network loopbacks: line loopbacks and payload loopbacks. These are illustrated in
Figure 1-5.
•
•

Line Loopback - Loops all of the received data back toward the network. The transmitted data is the
identical line code that was received, including any bipolar violations or framing errors.
Payload Loopback - Similar to line loopback, except that the framing is extracted from the received data
and then regenerated for the transmitted data.

Figure 1-5. Network Loopback Tests

DTE Interface Loopbacks
Loops all data from the terminal interface (TI) back towards the T1. This loopback may be initiated using
front panel, EIA-232 control port, or T-Watch commands. The DTE (or external test equipment) must
provide any test pattern in order to check the DTE interface. See Figure 1-6.

Figure 1-6. DTE Interface Loopback

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T1 ESF CSU ACE User Manual

Pattern Generation
The T1 ESF CSU ACE offers three test patterns: All Ones, All Zeros, and 1:8. These patterns can be
initiated from the front panel, through the EIA-232 control port, or remotely via a management software
like T-Watch.
All Ones
The All Ones pattern sends ones in all the payload bits.
All Zeroes
The All Zeros pattern sends zeros in all the payload bits and is useful for testing line code configuration
(AMI/B8ZS mismatches).
1 in 8 (1:8)
Each channel of the T1 has only one bit set. This pattern is used in conjunction with external test
equipment to determine whether the T1 line is performing acceptably under a stress condition.

APPLICATIONS
Three applications are shown in this section. Figure 1-7 on page 27 shows a general data application;
Figure 1-8 on page 28 shows a general voice application; and Figure 1-9 on page 28 shows a channel bank
application.

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Chapter 1. Introduction

Figure 1-7. General Data Application

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T1 ESF CSU ACE User Manual

Figure 1-8. General Voice Application

DSX-1

Figure 1-9. Channel Bank Application

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Chapter 2

Installation

UNPACK AND INSPECT
Carefully inspect the T1 ESF CSU ACE for any shipping damages. If damage is suspected, file a claim
immediately with the carrier and then contact ADTRAN Technical Support. If possible, keep the original
shipping container to ship the T1 ESF CSU ACE back for repair or to verify damage during shipment.

Shipped by ADTRAN
The following items are included in the ADTRAN shipment:
•
•
•
•

The T1 ESF CSU ACE
Line interface cable: an 8-position/modular to 8-position/modular
12 VDC power supply
TSU Single Port Family System Manual CD

Provided by Customer
The following items must be supplied by the customer:
•
•

DTE cable(s)
Cable for the EIA-232, if used

POWER CONNECTION
The unit may be powered by using the supplied NEC Class 2, 12 V wall mount power supply. It may also
be locally powered by own 12 to 48 V power supply. Once power has been applied to the unit, the PWR
LED illuminates.
The unit can be powered by either of the following methods:
Method 1

•

Use the included NEC Class 2, 12 V at 800 mA wall mount power supply.

Note: The wall outlet shall be near the equipment and readily accessible.
OR

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Method 2
•

Connect to a reliably-grounded 12-48 Vdc source which is electrically isolated from the AC source having
LPS or NEC Class 2 outputs

OR
•

Use a Listed Class 2 Direct Plug-In Supply with an output rated 12-48 Vdc, minimum 350 mA, maximum
240 VA.

Note: The branch circuit overcurrent protection shall be a fuse or circuit breaker rated at a minimum of 48 V to
a maximum of 10 A.
A readily accessible disconnect device that is suitably approved and rated, shall be incorporated in the field
wiring.
The unit shall be installed in accordance with the requirements of NEC NFPA 70, where applicable.
To use the cable of the supplied power supply with a local supply, connect the black wire to the negative pole of
the power supply and connect the black and white wire to the positive pole of the power supply. The outside
contact point of the barrel plug connects to the negative pole and the center contact point of the barrel plug
connects to the positive pole.

WIRING
The connectors are described in this section.

RJ-48C Connectors
Two RJ-48C connectors are located on the back end of the T1 ESF CSU ACE. The NET connector
connects the unit to the network. The connector marked CPE connects the unit to the data terminal
equipment. These connectors have exactly the same pinouts.

To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.

See Table A-1 on page 51 for the RJ-48 connector pin assignments.

EIA-232 Connector
The EIA-232 connector is used to connect the T1 ESF CSU ACE to a proxy agent, T-Watch, an ASCII
terminal, or a modem.
See Table A-2 on page 51 for the connector pin assignments.
Connector Type = Female DB-9

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POWER-UP TESTING AND INITIALIZATION
When shipped from the factory, the T1 ESF CSU ACE is set to factory default conditions. When power is
applied, the unit automatically executes self test, followed by an initialization sequence that sets up the
unit.

Self Test
Upon a power-up or self test, the LCD displays ADTRAN T1 ESF CSU ACE INITIALIZING and the
LEDs illuminate momentarily. When the self test is completed with no failures detected, the LCD
momentarily displays ALL TESTS PASSED. If a failure is detected, it is displayed in the LCD window.
The automatic self test procedure consists of the following steps:
1.

Board level tests - RAM tests; EPROM checksum

Unit level tests - Front panel LED verification

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Chapter 3

Operation

The T1 ESF CSU ACE can be configured and controlled via the local front panel, the EIA-232 control
port, or T-Watch. This chapter describes configuration from the front panel.

FRONT PANEL OPERATION
The T1 ESF CSU ACE front panel operating functions are shown in Figure 3-1 and defined in this section.

Figure 3-1. T1 ESF CSU ACE FRONT PANEL

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GENERAL FRONT PANEL MENU OPERATION
The T1 ESF CSU ACE uses a multilevel menu structure containing both menu items and data fields. All
menu operations and data are displayed in the LCD window. The menu items are numbered and can be
viewed by using the scroll keys (the arrow keys on the front panel).

Description of Menu Tools
Data Field
A menu item followed by a colon (:) identifies a field available for editing.
Display Field
This menu field contains alarm or error information.
Arrows
Menus that display small up or down arrows in the lower right corner indicate that there are more menu
items viewable on the two-line LCD. Access additional menu items with the up or down scroll keys.

Example Menu Operation
Selecting a Main Menu Item
To select a menu item from the Main menu, follow these steps:
1. Use the up and down scroll keys to place the cursor on the desired menu item (in this example,
2)CONFIG). See Figure 3-2.

Figure 3-2. Selecting a menu item from the Main Menu

2. With the cursor on the number 2), press the ENTER key. The unit responds by displaying the first two
available submenu fields. The cursor is on the first field. If there are more than two menu fields, a down
arrow is visible on the lower right corner. See Figure 3-3.

Figure 3-3. Menu with Additional Item(s) Not Shown

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Selecting a Submenu Item
To select the desired submenu item (similar to selecting a Main menu item), follow these steps:
1. Use the up and down scroll keys to place the cursor on the desired menu item, in this example
1)NETWORK (NI). See Figure 3-3.
2. The unit responds by displaying the first two available data field items. The cursor is on the number of
the first item. When there are more than two data field items for the selected submenu, a down arrow
is visible on the lower right corner. See Figure 3-4.

Figure 3-4. Submenu Indicating Additional Items Not Shown

Setting/Cancelling the Data Field
Data fields available for editing are preceded by a colon (:). To set a data field, perform the following steps:
1. Press ENTER while the cursor is located on the submenu item number. The cursor moves to the data
field (to the right of the submenu item name). See Figure 3-5.

Figure 3-5. Editing a Data Field
2. Use the up and down scroll keys to scan the available value settings displayed one at a time in the
data field position.
3. When the desired value is in the data field position, press ENTER to set the value. The unit now is set
for the value shown in the data field and the cursor moves back to the submenu item position,
indicating that the operation is complete. Another submenu field may be selected, or use CANCEL to
return to the submenu.

Cancelling is available any time during the operation. If CANCEL is used prior to
pressing ENTER after making a data change, the original data value is restored and the
cursor returns to the submenu field.

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View Display Only Data Fields
Select the following menu choice to view an example of a display-only data field:
1. Select 1)STATUS from the Main menu.
2. Select submenu 2)NI ERR/ALM.
3. LOSS OF SIGNAL INACTIVE/ACTIVE displays, giving the current state of the alarm.

Exiting or Returning to Previous Menus
Press the CANCEL key to exit a menu field or return to a previous menu level.

MENU STRUCTURE
The T1 ESF CSU ACE uses hierarchical menus to access its many features. The top-most, or Main menu
level (see Figure 3-6 and Figure 3-8) leads to submenus which are grouped by functionality. All menu
operations are displayed in the LCD window.

Figure 3-6. The Four Opening Menus

Figure 3-7 on page 37 shows the complete menu tree. Figure 3-8 on page 38 is a limited overview.
Following this figure is a detailed description of each menu item, presented in menu order.

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1)NI PERF RPTS

RESET PERF CNTRS
SES
LOSS OF SIGNAL

AIS ALARM
2)NI ERR/ALM
1)STATUS

%AV

OUT OF FRAME

CLEAR HISTORY

%EF

YELLOW ALARM

LOSS OF SIGNAL

CVS

RED ALARM

AIS ALARM

CODE VIOLATIONS

OUT OF FRAME

BIPOLAR VIOLATIONS

YELLOW ALARM

1)FORMAT

FRAME BIT ERRORS

RED ALARM

2)CODE

CODE VIOLATIONS

3)YEL ALRM

3)NI HIST

BIPOLAR VIOLATIONS

4)XMIT PRM

4)T1 ERR ALM*

FRAME BIT
ERRORS

5)KEEP ALIVE

5)T1 HISTORY**

6)BIT STUFFING

1)NETWORK (NI)

8)NET LB

7)SET LBO
9)ROB BIT SIG
MAIN MENU

2)UNIT

1)CONTROL PORT

2)CONFIG

1)MODEM INIT

10)RBS START

2)DATA RATE

11)RBS END

2)ALARMS

1)TRAPS
2)OUTPUT

1)FORMAT

3)TEL NUM

2)CODE

3)TERMINAL (T1)

3)UTIL

3)SET LBO

1)SOFTWARE REV (Displays current s/w rev)
2)REINIT UNIT
3)ADDRESS
4)SET PASSCODE

1)REMOTE UNIT (Select
remote unit type)

5)FACT RESTORE (Returns
all configs to factory settings)

2)SHELF SNMP ID:

NO LOOPBACK

7)REMOTE T-WATCH

3)SHELF SLOT:

DTE ON

1)LOCAL LOOPBACK

LINE ON

NO LOOPBACK

PAYLOAD ON

AT&T INBAND LLB
ANSI FDL LLB

4)TEST

2)REM LB

AT&T FDL PLB
NO PATTERN

3)TEST PATTERN

ALL ZEROS
1:8 ALL DS0s
ALL ONES

4)RUN SELFTEST

*T1 ERR/ALM has same menu sub-branches as NI ERR/ALM. **T1 HISTORY has same as NI HISTORY.

Figure 3-7. T1 ESF CSU ACE Menu Tree

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1)NI PERF RPTS
2)NI ERR/ALM
1)STATUS

3)NI HISTORY
4)T1 ERR/ALM

2)CONFIG

1)NETWORK (NI)

5)T1 HISTORY

2)UNIT
MAIN MENU

3)TERMINAL (T1)
1)SOFTWARE REV
3)UTIL

2)REINIT UNIT
3)ADDRESS:

4)TEST

1)LOCAL LOOPBK:

4)SET PASSCODE:

2)REM LB:

5)FACT RESTORE

3)TEST PATTERN:

6)REMOTE T-WATCH

4)RUN SELFTEST

Figure 3-8. Four Opening Menus and First Level Submenus

Menu flow is normally depicted from left to right. Arrows on the lower right of the screen indicate the
direction of scrolling to view additional menu items. At every level of the menu, pressing the CANCEL
button returns the system to the previous menu level. Repeatedly pressing the CANCEL button returns the
system to the Main menu.
The opening menu is the access point to all other operations. There are four Main menu items: STATUS,
CONFIGURATION, UTILITY, and TEST. Each Main menu item has several functions and submenus to
identify and access specific parameters. In the discussions that follow, each Main menu item contains a
complete menu diagram to identify the location of each operation.

DETAILED MENU OPERATION
Menu flow is normally depicted from left to right. Arrows on the lower right of the screen indicate the
direction of scrolling to view additional menu items. At every level of the menu, pressing the CANCEL
button returns the system to the previous menu level. Repeatedly pressing the CANCEL button returns the
system to the Main menu.
1)STATUS
The Status menu branch lets you view the status of the T1 ESF CSU ACE operation. See Figure 3-9.

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Chapter 3. Operation

1)NI PERF RPTS

RESET PERF CNTRS

LOSS OF SIGNAL

SES

AIS ALARM

OUT OF FRAME

%AV

YELLOW ALARM

%EF

RED ALARM

CVs

CODE VIOLATIONS
BIPOLAR VIOLATIONS

2)NI ERR/ALM

FRAME BIT ERRORS

1)STATUS
3)NI HISTORY

CLEAR HISTORY
LOSS OF SIGNAL
AIS ALARM
OUT OF FRAME
YELLOW ALARM
RED ALARM
CODE VIOLATIONS
BIPOLAR VIOLATIONS
FRAME BIT ERRORS

4)T1 ERR ALM*
5)T1 HISTORY**
*T1 ERR/ALM has the same menu sub-branches as NI ERR/ALM.
**T1 HISTORY has the same sub-branches as NI HISTORY.

Figure 3-9. Status Menu Tree

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1)NI PERF RPTS, Submenu of 1)STATUS

The Network Interface Performance Reports menu item displays the user copy of the performance
data. The T1 ESF CSU ACE maintains this performance data on the network in compliance with ANSI
T1.403 and AT&T document TR54016. The data displayed is data accumulated over the last 15
minutes and over the last 24 hours.

Figure 3-10. First Menu of NI PERF RPTS Menu

These fields cannot be edited, only cleared, as previously discussed. Only the user copy of the
performance data is cleared. The network management performance data history remains unaffected.
Separate carrier totals are kept which can only be retrieved and reset from the network.

Data Values

Figure 3-11. Performance Counter Screen

The counters used in the performance screens are defined below.
SES
ES
%AV
%EF
CVs

Number of severely errored seconds
Number of errored seconds
Percent of available seconds
Percent of error free seconds
Number of code violations

Continue with standard operation procedures to exit the display.
Since only the user’s copy of performance data is cleared by the T1 ESF CSU ACE, the
data displayed here might be different from the data being sent to the network as
maintenance message data.

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2)NI ERR/ALM, Submenu of 1)STATUS

The NI ERR/ALM menu is used for viewing currently active/inactive errors and alarms on the network
interface.

Figure 3-12. First Current NI Errors/Alarms Screen

The up and down scroll keys are used to access the complete display of the errors/alarms that are
currently active. The alarms and errors which can be seen are shown below:

Bipolar Violations

No pulses received at NI
Unframed all-ones received at NI
No framing pattern sync at NI
Receiving yellow alarm pattern from NI
LOS (loss of signal)/out of frame (OOF) causing red alarm at NI
Bipolar violations (BPVs), frame bit errors, and cyclic redundancy check
(CRC) errors in ESF or BPVs and frame bit errors in SF were received at
NI
BPVs in SF or ESF at NI

Frame Bit Errors

Frame bits received incorrectly at NI

Loss of Signal
AIS Alarm
Out of Frame
Yellow Alarm
Red Alarm
Code Violations

3)NI HISTORY, Submenu of 1)STATUS

The NI History menu is used for viewing the history of errors and alarms on the network interface. If
an alarm has occurred since the last Clear History selection, the menu will be active. If the condition
hasn’t occurred, the menu will be inactive. The Clear History screen is shown in Figure 3-13.

Figure 3-13. Clear History Screen

The conditions reported are the same as those in the NI ERR/ALM submenu but provide historical data
on Alarms/Errors instead of current data on Alarm/Errors.
4)TI ERR/ALM, Submenu of 1)STATUS

The T1 ERR/ALM screens are the same as the NI ERR/ALM screens except that they correspond to
the terminal interface.

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5)TI HISTORY, Submenu of 1)STATUS

The T1 HISTORY screens are the same as the NI HISTORY screens except that they correspond to the
terminal interface.
2)CONFIG
Use the Configuration menu to set the T1 ESF CSU ACE operational configuration, including all of the
network interface parameters and the terminal interface parameters. See Figure 3-14.
1)FORMAT
2)CODE
1)NETWORK (NI)

3)YEL ALRM
4)XMIT PRM
5)KEEP ALIVE
6)BIT STUFFING
7)SET LBO
8)NET LB
9)ROB BIT SIG
10)RBS START
11)RBS END

2)CONFIG

1)MODEM INIT
2)UNIT

1)CONTROL PORT
2)ALARMS

2)DATA RATE
1)TRAPS
2)OUTPUT
3)TEL NUM

3)TERMINAL (T1)

1)FORMAT
2)CODE
3)SET LBO

Figure 3-14. Configuration Menu Tree
1)NETWORK (NI), Submenu of 2)CONFIG

This menu is used to access the configuration of parameters associated with the network interface in
the T1 ESF CSU ACE. There are nine submenu items that include setting the format and the line build
out (LBO).

Figure 3-15. Network (NI) Submenu

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Chapter 3. Operation

Continue with standard operating procedures to edit the Network Interface parameters.
The fields and parameters available are as follows:
1)FORMAT

Sets the frame format for the NI. The factory default is ESF.
D4
ESF

D4 is equivalent to superframe format (SF).

2)CODE

Sets the line code for the NI. The factory default is B8ZS.
AMI
B8ZS
3)YEL ALRM

Enables and disables the transmission of yellow alarms. The factory default is ENABLED.
ENABLED
DISABLED
4)XMIT PRM

Enables and disables the transmitting of performance report messages (PRM) data on the facility data
link (FDL). The PRM data continues to be collected even if PRM is disabled. (Possible only with
ESF Format.) The factory default is OFF.
OFF
ON
5)KEEP ALIVE

Selects framed or unframed keep alive signal to be transmitted from NI when TI is in red alarm. The
factory default is UNFRAMED.
FRAMED
UNFRAMED

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6)BIT STUFFING

When enabled, bit stuffing causes the T1 ESF CSU ACE to monitor for ones (1s) density violations
and inserts a one (1) when needed to maintain ones at 12.5 percent. This option should be disabled if
B8ZS is enabled. The factory default is DISABLED.
ENABLED
DISABLED
7)SET LBO

Selects the line build out for the network interface. The factory default is 0 dB.
0 dB
-7.5 dB
-15 dB
-22.5 dB

When interfacing to a Smart jack, the 0 dB setting typically works best because most
Smart jacks expect a strong receive level.

8)NET LB

When enabled, the T1 ESF CSU ACE responds to loopback codes from the network interface. The
factory default is ENABLED.
ENABLED
DISABLED
9) ROB BIT SIG

Enables and disables robbed-bit signaling. This option should be enabled in applications when the
terminal interface (TI) is connected to equipment for voice or dialed data services (PBX/SW56).
When enabled, robbed bit signaling will occur in the user specified DS0s. The DS0s must be
contiguous, and are defined by a starting and ending DS0. The factory default is Disabled.
ENABLE
DISABLE
10) RBS START

When robbed-bit signaling is enabled, enter the first DS0 in which robbed-bit signaling will occur
(1-24). The factory default is 1.
11) RBS END

When robbed-bit signaling is enabled, enter the last DS0 in which robbed-bit signaling will occur (124). The factory default is 24.

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2)UNIT, Submenu of 2)CONFIG

This menu is used to change control port and alarm trap options. See Figure 3-16.

Figure 3-16. First 2)UNIT Submenu SCreen
1)CONTROL PORT

8VHGWRVHWXSWKHXQLWWRLQLWLDOL]HDPRGHPDQGWKHFRQWUROSRUWGDWDUDWH

1)MODEM INIT7KH7(6)&68$&(LVFDSDEOHRILQLWLDOL]LQJDPRGHP3ULRUWRPRGHPLQL

WLDOL]DWLRQLWVKRXOGEHSK\VLFDOO\FRQQHFWHGWRWKH7(6)&68$&(DQGWKHSRZHUWXUQHGRQ$W
WKLVSRLQWDQLQGXVWU\VWDQGDUG$7FRPPDQGVWULQJLVXVHGWRLQLWLDOL]HWKHPRGHP7KHVWULQJLV
DOVRXVHGIROORZLQJIXWXUHSRZHUXSVHTXHQFHV7KHIDFWRU\GHIDXOWLV DISABLED.
ENABLED
DISABLED
2)DATA RATE - Selects the data rate for the control port. This should be consistent with the
modem and/or PC/proxy agent serial port. The factory default is 9600.
1200
2400
9600

2)ALARMS
Used to initialize the method by which the control port handles alarm conditions.
1)TRAPS - This setting determines whether alarm conditions should automatically send alarm
messages (traps) to the controlling PC/proxy agent. The factory default is DISABLED.
ENABLED
DISABLED
2)OUTPUT - Selects whether the alarm traps (if enabled) are sent directly, or whether the telephone number stored in the T1 ESF CSU ACE should be dialed first (industry-standard AT dial
command sent to modem). The factory default is DIRECT.
DIRECT
DIAL

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3)TEL NUM - This is the telephone number dialed for alarm traps transmission. The string can be
up to 20 characters in length and is terminated with a semicolon (;). A colon (:) is used to represent
a pause in the dial string.
Example: Number 9:5551212; would dial 9, pause momentarily, and then send 5551212. This
pause could be effected to access an outside line from a PBX, etc.
When editing a specific character, the scroll keys are used to scroll from 0 to 9, then colon(:) and
semicolon (;). The new telephone number is entered into the T1 ESF CSU ACE only upon pressing ENTER after typing the semicolon (;).
Input - 20 digits (0 through 9, : and ;)

The typed digits are accepted only after pressing ENTER. The telephone numbers can be
cleared by entering a semicolon (;) as the first digit.

3)TERMINAL (TI), Submenu of 2)CONFIG
This menu item is used to select and configure the parameters associated with the T1 ESF CSU ACE
terminal interface.
1)FORMAT
Sets the frame format for the T1. The factory default is ESF.
D4
ESF
2)CODE
Sets the line code for the T1. The factory default is B8ZS.
AMI
B8ZS
3)SET LBO
Sets the transmit LBO for the T1. The factory default is 0 - 133 feet.
0 - 133 feet
133 - 266 feet
266 - 399 feet
399 - 533 feet
533 - 655 feet
-7.5 dB
3)UTIL
Use the Utility menu to view and set system parameters. See Figure 3-17. This includes setting the time
and date and resetting all parameters to factory values or to re-initialize the unit. This menu is also used to
view the unit’s software revision and ID setting.

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1)SOFTWARE REV

(Displays current software rev.)

2)REINIT UNIT
3)UTIL

3)ADDRESS
4)SET PASSCODE
5)FACT RESTORE

(Returns all configurations to
factory settings.)

6)REMOTE T-WATCH

1)ACCESS TYPE

(Select remote unit type.)

2)SHELF SNMP ID:
3)SHELF SLOT:

Figure 3-17. Utility Menu Tree

1)SOFTWARE REV, Submenu of 3)UTIL
Use this submenu to display the current software revision level. This information is required when
requesting assistance from ADTRAN Customer Service or when updates are needed. The top line
gives the revision of interest. The bottom line displays information of use to ADTRAN only.
Follow standard operating procedures to access the 3)UTIL menu items.
2)REINIT UNIT, Submenu of 3)UTIL
Use this submenu to re-initialize the unit. This menu item does not restore factory default settings, but
simply resets the unit and causes it to run through its self test and initialization cycles.
3)ADDRESS, Submenu of 3)UTIL
Use this submenu to access the current Unit Address setting. Unit identification numbers must be
between 000 and 999. See Figure 3-18.

Figure 3-18. Re-initialize Unit/Address Screen

4)SET PASSCODE, Submenu of 3)UTIL
Use this submenu to access the passcode setting needed to control port access. The Unit Identification
number is limited to four digits between 0001 and 9999.
5)FACT RESTORE, Submenu of 3)UTIL
Use this submenu to restore factory default settings for all unit parameters. This restores all parameters
to the factory settings.

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6)REMOTE T-WATCH, Submenu of 3)UTIL
To communicate with a far-end unit via the FDL (i.e., from a proxy such as T-Watch), identify the
remote unit as a standalone or rackmount. Use this option to select the remote unit type, ID, and slot
number. The ID and slot number are only applicable if the selected remote unit is rackmount, so these
may be left blank if the remote unit is standalone.
1)ACCESS TYPE (REMOTE UNIT)
1)STANDALONE - The far-end unit is standalone.
2)RACKMOUNT - The far-end is a rackmount.
2)SHELF SNMP ID
Enter the SNMP ID of the far-end rackmount unit (0-255).
3)SHELF SLOT
Enter the slot number of the far-end rackmount unit (1-16).

This type of communication may not be available with all T1 products.

4)TEST
Use the Test menu to initiate different types of tests of the unit and view test results. The menu
contains four sub-items. See Figure 3-19.

The execution of tests disrupts some of the normal operation. See individual menu items
concerning tests before executing.

NO LOOPBACK
1)LOCAL LOOPBK

DTE ON
LINE ON

NO LOOPBACK

PAYLOAD ON

AT&T INBAND LLB
ANSI FDL LLB

2)REM LB
4)TEST

AT&T FDL PLB
NO PATTERN
ALL ZEROS

3)TEST PATTERN

1:8 ALL DS0s
ALL ONES

4)RUN SELFTEST

Figure 3-19. Test Menu Tree

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Tests are used to control the activation of loopbacks, the initiation of data test patterns, and self test
execution.
1)LOCAL LOOPBK, Submenu of 4)TEST
Four choices are available for setting the local loopback:
NO LOOPBACK
DTE ON
LINE ON
PAYLOAD ON

Deactivates the loopback
Activates the DTE loopback
Activates the line loopback
Activates the payload loopback

Figure 3-20. Local Loopback Test Screen

2)REM LB, Submenu of 4)TEST
Activates the same loopbacks as the LOCAL LOOPBCK but at the far end. This uses either the inband
loop-up code as specified by AT&T 62411 for line loopback (ATT In-Band LLB), or the FDL as
specified in ANSI T1.403 for line loopback codes. An FDL (formerly TABS) maintenance message
corresponding to AT&T TR54016 can be used for payload loopback as well:
NO LOOPBACK
AT&T INBAND LLB
ANSI FDL LLB
AT&T FDL PLB

Deactivates the loopback.
Activates the line loopback using inband code.
Initiates the transmission of an FDL line loop-up code toward the far end.
Initiates the transmission of the PLB maintenance messages on the FDL.

When a loopback method is selected, the T1 ESF CSU ACE displays LOOPING in the top
right corner of the LCD and the yellow LOOPBACK LED is turned on. When the T1 ESF
CSU ACE determines that the far-end T1 ESF CSU ACE has looped up, the T1 ESF CSU
ACE displays LOOPED. If the T1 ESF CSU ACE does not recognize the remote T1 ESF
CSU ACE looped up after about 10 seconds, the T1 ESF CSU ACE sends the appropriate
loop-down code and displays FAILED, and the LOOPBACK LED is turned off.
Excessive errors on the T1 line can cause this failure. The FDL loopbacks fail if the FDL
is not intact from one end point to the other. FDL loopbacks are valid only in the ESF
framing mode.

61204025L1-1B

Chapter 3. Operation

T1 ESF CSU ACE User Manual

3)TEST PATTERN, Submenu of 4)TEST
Sets the pattern for the test and initiates the transmission of the pattern. The test is terminated by
selecting NO PATTERN. There are four patterns available:
NO PATTERN
ALL ZEROS
1:8 ALL DS0s
ALL ONES

Terminates pattern generation.
Generates an all zeros pattern in every channel.
Generates a 1 in 8 pattern in all DS0s.
Generates an all ones pattern in every channel.

Use up and down
scroll keys
Press ENTER
Results

Select
NO PATTERN

To select, for example, 1:8 ALL
DS0s.
To record selection.
The T1 ESF CSU ACE starts to generate a 1:8 test pattern and inserts the
pattern into all DS0s.
To end the test.

4)RUN SELFTEST, Submenu of 4)TEST
Use this menu selection to execute an internal self test. This is the same self test that is performed
automatically at power-up. The results of the self tests are displayed in the LCD (see Figure 3-21).
Upon invoking the command, the LCD displays INITIALIZING and test failures are displayed in the
LCD window.

Figure 3-21. Self Test Result Screen

If a failure is detected, note the failure prior to contacting ADTRAN technical support.

The execution of a self test disrupts normal data flow and prevents remote communication
until the self test is completed (approximately five seconds).

61204025L1-1B

Pinouts

Appendix A

Table A-1. RJ-48C Connector Pin Assignments
Pin

Description

NET

CPE

Receive data (from
network to CSU)

Transmit data (from
CSU to DTE)

Receive data (from
network to CSU)

Transmit data (from
CSU to DTE)

Not used

Transmit data (from CSU
to network)

Receive data (from
DTE to CSU)

Transmit data (from CSU
to network)

Receive data (from
DTE to CSU)

Not used

Table A-2. EIA-232 Connector Pin Assignments

61204025L1-1B

Name

Description

Data from DTE to CSU

Data from CSU to DTE

Signal ground

Appendix A. Pinouts

T1 ESF CSU ACE User Manual

61204025L1-1B

Appendix B

Specification Summary

SPECIFICATIONS AND FEATURES
Specifications and features of the T1 ESF CSU ACE are provided in this chapter.
Network Interface

DSI interface per AT&T 62411 and ANSI T1.403
Network Framing Format

D4 (SF) or ESF
Network Line Code

AMI or B8ZS
Network TX LBO

Configurable from 0.0 to -22.5 dB
Performance Monitoring

As per ANSI T1.403 and AT&T 54016
DTE Interface

DSX-1 interface per ANSI T1.102
DTE Framing Format

D4 (SF) or ESF
DTE Line Code

AMI or B8ZS
DTE TX LBO

DSX-1 up to 655 feet of 22-gauge ADAM cable
Monitor and Configuration Access

•
•
•

Front panel keypad and display
EIA-232 control port
T-Watch over FDL (ESF only)

Diagnostics

•
•
•
•

Self Test
Local Loopbacks
Remote Loopbacks
Test Patterns

61204025L1-1B

Appendix B. Specification Summary

T1 ESF CSU ACE User Manual

Environment

Temperature:
Operating

0 to 50 deg C
(32 to 122 deg F)

Storage

-20 to 70 deg C
(-4 to 158 deg F)

Relative humidity: Up to 95%, noncondensing
Hardware Specifications

•
•
•
•
•

Dimensions: 1.75”H x 6.25”D x 9.25”W
Weight:
1 lb.
Power:
-12 VDC @ 250 mA; 115 VAC @ 60 mA (Provided wall mount supply)
MTBF:
784,314 hours
CLEI:
NCT1CD9BAA

61204025L1-1B

Appendix C

Acronyms/Abbreviations

ACK

acknowledgment

ANSI

American National Standards Institute

access rate

ARP

address resolution protocol

async

asynchronous

BECN

backward explicit congestion notification

BOP

bit oriented protocol

CCITT

Consultive Committee for International Telephony and Telegraphy

carrier detect

central office

CPE

customer premise equipment

CRC

cyclic redundancy check

clear to send

CSU

channel service unit

CTS

clear to send

decibel

DBU

Dial backup

DCD

data carrier detect

DCE

data communications equipment

DDS

digital data service

discard eligible

DLCI

data link connection identifier

DSAP

directory scope analysis program

DSR

data set ready

DSU

data service unit

DTE

data terminal equipment

DTR

data terminal ready

FDL

facility data link

FECN

forward explicit congestion notification

FEP

front end processor

FIFO

first in first out

61204025L1-1C

Appendix C. Acronyms/Abbreviations

T1 ESF CSU ACE User Manual

frame relay

FRAD

frame relay access device

FRF

frame relay forum

FSU

frame relay service unit

HDLC

high-speed data link control

internet protocol

ISDN

integrated services digital network

ITU

International Telecommunications Union

keep alive

LAN

local area network

LED

light emitting diode

LLC

logical link control

LMI

local management interface

LRC

lateral redundancy check

MIB

management information base

millisecond

NRZ

non-return to zero

NRZI

non-return to zero inverted

OCU

office channel unit

OOS

out of service

PLAR

private line automatic ringdown

PPP

point to point protocol

physical unit

PVC

permanent virtual circuit

receive data

RDL

remote digital loopback

RFC

request for comments

RFECN

remote forward explicit congestion notification

RIP

routing information protocol

RMA

return material authorization

receiver ready

recommended standard

RTS

request to send

receive

SAP

service access point

SDLC

synchronous data link control

SLIP

serial line internet protocol

61204025L1-1C

T1 ESF CSU ACE User Manual

Appendix C. Acronyms/Abbreviations

SNA

systems network architecture

SNMP

simple network management protocol

SNRM

set normal response mode

data set ready

SVC

switched virtual circuit

SW56

switched 56

sync

synchronous

transmit data

data terminal ready

transmit

UNI

user-to-network interface

VRC

vertical redundancy check

WAN

wide area network

XID

exchange identification

XMIT

transmit

61204025L1-1C

Appendix C. Acronyms/Abbreviations

T1 ESF CSU ACE User Manual

61204025L1-1C

Appendix D

Glossary

4-wire Switched 56
An AT&T proprietary 56/64 kbps switched digital data service offered by telco service providers and delivered
to users over 4 copper wires. Compatible with the T1 ESF CSU ACE 4-wire Switched 56 DBU option.
ANSI
American National Standards Institute. Devices and proposes recommendations for international communications standards.
asynchronous
A method of data transmission which allows characters to be sent at irregular intervals by preceding each character with a start bit, followed by a stop bit.
bandwidth
The bandwidth determines the rate at which information can be sent through a channel (the greater the bandwidth, the more information that can be sent in a given amount of time).
BECN
backward explicit congestion notification. A bit set by a frame relay network to notify an interface device
(DTE) that congestion avoidance procedures should be initiated by the sending device.
bridge
A device that supports LAN-to-LAN communications. Bridges may be equipped to provide frame relay support
to the LAN devices they serve. A frame relay capable bridge encapsulates LAN frames in frame relay frames
and feeds them to a frame relay switch for transmission across the network. A frame relay capable bridge also
receives frame relay frames from the network, strips the frame relay frame off each LAN frame, and passes the
LAN frame on to the end device. Bridges are generally used to connect LAN segments to other LAN segments
or to a WAN. They route traffic on the Level 2 LAN protocol (e.g. the Media Access Control address), which
occupies the lower sub-layer of the LAN OSI data link layer. See also router.
CCITT
Consultive Committee for International Telephony and Telegraphy. A standards organization that devises and
proposes recommendations for international communications. See also ANSI.
CD
carrier detect. A signal generated by a modem or DSU/CSU. CD indicates the presence of a carrier signal on a
communications link.
clocking
An oscillator-generated signal that provides a timing reference for a transmission link. A clock provides signals
used in a transmission system to control the timing of certain functions. The clock has two functions, (1) to generate periodic signals for synchronization and (2) to provide a time base.
CPE
customer premise equipment. All telecommunications terminal equipment located on the customer premises,
including telephone sets, private branch exchanges (PBXs), data terminals, and customer-owned coin-operated
telephones.

61204025L1-1B

Appendix D. Glossary

T1 ESF CSU ACE

CRC
cyclic redundancy check. A computational means to ensure the accuracy of frames transmitted between devices
in a frame relay network. The mathematical function is computed, before the frame is transmitted, at the originating device. Its numerical value is computed based on the content of the frame. This value is compared with a
recomputed value of the function at the destination device. See also FCS.
CS
See CTS.
CSU
channel service unit. A device used to connect a digital phone line (T1 or Switched 56 line) coming in from the
phone company to either a multiplexer, channel bank, or directly to another device producing a digital signal;
for example, a digital PBX, a PC, or data communications device. A CSU performs certain line-conditioning
and equalization functions, and responds to loopback commands sent from the central office. A CSU regenerates digital signals. It monitors them for problems, and provides a way of testing the digital circuit.
CTS
clear to send. A signal on the DTE interface indicating that the DCE is clear to send data.
dB
decibel. A unit of measure of signal strength, usually the relation between a transmitted signal and a standard
signal source.
DCE
data communications equipment. Device that provides all the functions required for connection to telephone
company lines and for converting signals between telephone lines and DTE. Also see DTE.
DDS
digital data service. A private line digital service, for transmitting data end-to-end at speeds of 2.4, 4.8, 9.6, and
56 kbps and in some cases 19.2, 38.4, or 64 kbps. The systems can use central hub offices for obtaining test
access, bridging legs of multipoint circuits, and cross connecting equipment. DDS is offered on an inter-LATA
basis by AT&T and on an intra-LATA basis by the Bell operating companies.
DE
discard eligibility. A user-set bit indicating that a frame may be discarded in preference to other frames if congestion occurs, to maintain the committed quality of service within the network. Frames with the DE bit set are
considered excess data.
DLCI
data link connection identifier. A unique number assigned to a PVC end point in a frame relay network. Identifies a particular PVC endpoint within a user’s access channel in a frame relay network and has local significance only to that channel.
DSU
data service unit. A device designed to transmit and receive digital data on digital transmission facilities.
DSU loopback
A telco initiated test which loops the DSU back to the telco and is used to test the DDS circuit as well as the
DSU/CSU.

61204025L1-1B

T1 ESF CSU ACE

Appendix D. Glossary

DTE
data terminal equipment. The end-user terminal or computer that plugs into the termination point (DCE) of a
communications circuit. The main difference between the DCE and the DTE is that pins two and three are
reversed.
encapsulation
A process by which an interface device places an end device’s protocol-specific frames inside a frame rely
frame. The network accepts only frames formatted specifically for frame relay; therefore interface devices acting as interfaces to a frame relay network must perform encapsulation. See also interface device or frame relay
capable interface device.
end device
The ultimate source or destination of data flowing through a frame relay network sometimes referred to as
DTE. As a source device, it sends data to an interface device for encapsulation in a frame relay frame. As a destination device, it receives de-encapsulated data (i.e., the frame relay frame is stripped off, leaving only the
user’s data) from the interface device.
FCS
frame check sequence. The standard 16-bit cyclic redundancy check used for HDLC and frame relay frames.
The FCS detects bit errors occurring in the bits of the frame between the opening flag and the FCS, and is only
effective in detecting errors in frames no larger than 4096 octets. See also CRC.
FDL
facility data link. A 4 bit/s non-disruptive management channel provided in ESF framing mode. This data link
conforms to ANSI T1.403 and AT&T TR 54016 specifications.
FECN
forward explicit congestion notification. A bit set by a frame relay network to notify an interface device (DTE)
that congestion avoidance procedures should be initiated by the receiving device. See also BECN.
file server
In the context of frame relay network supporting LAN-to-LAN communications, a device connecting a series
of workstations within a given LAN. The device performs error recover and flow control functions as well as
end-to-end acknowledgment of data during data transfer, thereby significantly reducing overhead within the
frame relay network.
frame-relay-capable interface device
A communications device that performs encapsulation. Frame-relay-capable routers and bridges are examples
of interface devices used to interface the customer’s equipment to frame relay network. See also interface
device and encapsulation.
frame relay frame
A variable-length unit of data, in frame-relay format that is transmitted through a frame relay network as pure
data. Contrast with packet. See also Q.922A.
frame relay network
A telecommunications network based on frame relay technology. Data is multiplexed. Contrast with packet
switching network.

61204025L1-1B

Appendix D. Glossary

T1 ESF CSU ACE

HDLC
high level data link control. A generic link-level communications protocol developed by the International Organization for Standardization (ISO). HDLC manages synchronous code-transparent, serial information transfer
over a link connection. See also SDLC.
hop
A single trunk line between two switches in a frame relay network. An established PVC consists of a certain
number of hops, spanning the distance form the ingress access interface to the egress access interface within the
network.
host computer
The primary or controlling computer in a multiple computer operation.
in-band
Signaling (dialing, diagnostics, management, configuration, etc.) over the same channel used for data.
ingress
Frame relay frames leaving from an access device in a direction toward the frame relay network.
interface device
Provides the interface between the end device(s) and a frame relay network by encapsulating the user’s native
protocol in frame relay frames and sending the frames across the frame relay backbone. See also encapsulation
and frame-relay-capable interface device.
ISDN
Integrated Services Digital Network. A network architecture that enables end-to-end digital connections. The
network supports diverse services through integrated access arrangements and defines a limited set of standard,
multipurpose interfaces for equipment vendors, network providers, and customers. Networking with a public
switched telephone network is retained.
LAN
local area network. A privately owned network that offers high-speed communications channels to connect
information processing equipment in a limited geographic area.
out-of-band
Signaling that is separated from the channel carrying information (voice, data, video, etc.). Typically the separation is accomplished by a filter. The signaling includes dialing and other supervisory signals.
packet
A message containing both control information and data. The control information is used for routing the packet
through a network to its final destination. Contrast with frame relay frame.
packet-switching network
A telecommunications network based on packet-switching technology, wherein a transmission channel is occupied only for the duration of the transmission of the packet. Contrast with frame relay network.
parameter
A numerical code that controls an aspect of terminal and/or network operation. Parameters control such aspects
as page size, data transmission speed, and timing options.

61204025L1-1B

T1 ESF CSU ACE

Appendix D. Glossary

ping
An internet protocol standard that provides loopback on demand for any device in an IP network. One device
“pings” another by sending a loopback request to the device's IP address.
point-to-point
Type of communications link that connects a single device to another single device, such as a remote terminal
to a host computer.
PVC
permanent virtual circuit. A frame relay logical link, whose endpoints and class of service are defined by network management. Analogous to an X.25 permanent virtual circuit, a PVC consists of the originating frame
relay network element address, originating data link control identifier, terminating frame relay network element
address, and termination data link control identifier. Originating refers to the access interface form which the
PVC is initiated. Terminating refers to the access interface at which the PVC stops. Many data network customers require a PVC between two points. Data terminating equipment with a need form continuous communion
use PVCs. See also DLCI.
remote configuration
A feature designed into ADTRAN DSU/CSU products that allow remote DSU/CSU to be configured from a
local DSU/CSU or VT100 compatible terminal.
router
A device that supports LAN-to-LAN communications. Routers may be equipped to provide frame relay support
to the LAN devices they serve. A frame-relay-capable router encapsulates LAN frames in a frame relay frames
and feeds those frame relay frames to a frame relay switch for transmission across the network. A frame-relaycapable router also receives frame relay frames from the network, strips the frame relay frame off each frame to
produce the original LAN frame, and passes the LAN frame on to the end device. Routers connect multiple
LAN segments to each other or to a WAN. Routers route traffic on the Level 3 LAN protocol (e.g., the internet
protocol address). See also bridge.

61204025L1-1B

Appendix D. Glossary

T1 ESF CSU ACE

SDLC
synchronous data link control. A link-level communications protocol used in an international business
machines (IBM) systems Network Architecture (SNA) network that manages synchronous, code-transparent,
serial information transfer over a link connection. SDLC is a subset of the HDLC protocol developed by ISO.
service
The provision of telecommunications to customers by a common carrier, administration, or private operating
agency, using voice, data, and/or video technologies.
SNMP
simple network management protocol. A control and reporting scheme widely used to manage devices from different vendors. SNMP operates on top of the Internet protocol.
SR
data set ready. A signal on the EIA-232 interface that indicates if the communications is connected and ready to
start handshaking control signals so communications can begin.
statistical multiplexing
Interleaving the data input of two or more devices on a single channel or access line for transmission through a
frame relay network. Interleaving of data is accomplished using the DLCI.
switched network
The network of dial-up telephone lines using circuit switching to provide communications services to network
users.
synchronous
Communications in which the timing is achieved by sharing a single clock. Each end of the transmission synchronizes itself with the use of clocks and information sent along with the transmitted data.
T1
Transmission rate of 1.544 Mbps on T1 communication lines. A T1 facility carriers a 1.544 Mbps digital signal.
Also referred to as digital signal level 1 (DS-1). See also E1.
trunk line
A communications line connecting two frame relay switches to each other.
VT100
A non-intelligent terminal or terminal emulation mode used for asynchronous communications. Used to configure the T1 ESF CSU ACE.

61204025L1-1B

Index
Numerics

T1 application 20
testing 24

1 in 8 pattern 26

ACCESS TYPE (REMOTE UNIT) 48
ADDRESS 47
ADTRAN PC program 23
ALARMS 45
all ones pattern 26
all zeroes pattern 26
applications 26
arrows, menus 34
ASCII terminal 23

FACT RESTORE 47
features 21
FORMAT 43, 46
front panel 20
control 23
operation 33

G
general data application 27
general menu operation 34
general voice application 28

BIT STUFFING 44

I
C
channel bank application 28
CODE 43, 46
CONFIG 42
Configuration menu 42
connectors
EIA-232 30
RJ-48C 30
control methods 23
ASCII terminal 23
front panel 23
CONTROL PORT 45
control port 22

D
D4 superframe 19
DATA RATE 45
display field 34
DTE interface loopback 25

E
EAI-232 connector 30
ESF CSU
applications 26
control methods 23
features 21
front view 20
operation 33
overview 19

61204025L1-1B

initialization 31
Installation 29
interface loopbacks 25
interfaces 22
control port 22
network interface 22
T1 (CPE) 22

J
jack signal directions 21

K
KEEP ALIVE 43

L
line loopback 25
LOCAL LOOPBK 49
loopback tests 25

M
menu
arrows 34
Configuration 42
data field 34
example operation 34
exiting or returning to previous menus 36
selecting menu item 34
selecting submenu item 35

Index

setting/cancelling data field 35
Status 38
structure 36
Test 48
tools 34
Utility 46
methods of control 23
MODEM INIT 45

N
NET LB 44
NETWORK (NI) 42
network interface port 22
network loopbacks 25
NI ERR/ALM 41
NI HISTORY 41
NI PERF RPT 40

O
Operation 33
operation
via front panel 33
operation of unit 33
OUTPUT 45

P
packaging 29
pattern generation 26
payload loopback 25
PC control 23
pinouts 51, 53
power connection 29
power-up testing 31

R
REINIT UNIT 47
REM LB 49
REMOTE T-WATCH 48
RJ-48C connector 30
RUN SELFTEST 50

T1 ESF CSU ACE User Manual

setting/cancelling data field 35
SHELF SLOT 48
SHELF SNMP ID 48
shipping contents 29
signal directions 21
Simple Network Management Protocol 23
SNMP 23
SOFTWARE REV 47
STATUS 38
Status menu 38
superframe 19

T
T1 application 20
T1 ERR/ALM 41
T1 interface 22
T1 service 19
TEL NUM 46
TERMINAL (TI) 46
TEST 46, 48
Test menu 48
TEST PATTERN 50
test pattern 26
testing 24
interface loopbacks 25
network loopbacks 25
self test 24
TI HISTORY 42
TRAPS 45
T-Watch 23

U
UNIT 45
UTIL 46
Utility menu 46

W
wiring 30

X
XMIT PRM 43

S
self test 24, 31
SET LBO 44, 46

Y
YEL ALRM 43

61204025L1-1B

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