Wave Wireless AIRLINKPROT1E1 User Manual

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Release Date: January, 1997

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CYLINK CORPORATION 
910 Hermosa Court
Sunnyvale, California 94086, USA
1-408-735-5800
CYLINK LIMITED U.K.
Tel: [phone]
Fax: [phone]
CYLINK CORPORATION (Singapore)
Tel: [phone]
Fax: [phone]
CYLINK CORPORATION (New Delhi)
Tel: [phone]
Fax: [phone]
CYLINK CORPORATION (Bejing)
Tel: [phone]
Fax: [phone] 
CYLINK CORPORATION (Pakistan)
Tel: [phone]
Fax: [phone]
CYLINK CUSTOMER SUPPORT
1-800-545-6608 (USA - California)
1-800-814-5587 (USA - New Jersey)
1-408-735-5822 (International - California)
1-201-333-3400 (International - New Jersey)
[phone] (Cylink Limited - U.K.)


AirLink Pro 

T1/E1 Rack Mount

Installer’s Guide

COPYRIGHT © 1994 - 1997 Cylink Corporation World Rights Reserved.

Cylink Corporation provides this Manual “as is,” without warranty of any kind, either express or implied,
including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Cylink Corporation may make improvements and changes to the product described in this Manual at any
time and without any notice. Cylink Corporation assumes no responsibility for its use, nor any infringements
of patents or other rights of third parties that would result.

This Manual could contain technical inaccuracies or typographical errors. Periodic changes are made to the
information contained herein; these changes will be incorporated in new editions of the Manual.

No part of this publication may be stored in a retrieval system, transmitted, or reproduced in any way,
including but not limited to photocopy, photograph, magnetic or other records, without the prior written
permission of Cylink Corporation.

CYLINK is a registered trademark of Cylink Corporation; AirLink is a trademark of Cylink Corporation.

PRODUCT COMPATIBILITY

While every effort has been made to verify operation of this product with many different communications
products and networks, Cylink Corporation makes no claim of compatibility between its products and other
vendors’ equipment. It is assumed that users have thoroughly evaluated this product’s performance in the
communications environment in which it will be used.

SAFETY

The following general safety precautions must be observed during all phases of operation and service of this
product. Failure to comply with these precautions or with specific warnings elsewhere in this Manual willfully
violates standards of design, manufacture, and intended use of the product. Cylink Corporation assumes no
liability for the customer’s failure to comply with these requirements.

This product must be grounded. In the event of a short circuit, grounding reduces the risk of electrical shock
by providing an escape wire for the current.

Do not install or operate this product in the presence of flammable gases or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.

No user maintained or adjustable components are present within this product. The covers should not be
removed by anyone other than authorized Cylink service personnel. The potential for electrical shock exists
within the enclosure at all times unless it is unplugged.

Do not install substitute parts or perform any unauthorized modification to the AirLink Pro T1or E1. Return
the product to Cylink Corporation for service and repair to ensure that safety features are maintained. Prior
to returning any product(s) for repair, contact Cylink at the telephone numbers or address located on the
front of this Manual, and obtain a Return Material Authorization (RMA) number.

Changes or modifications not expressly approved by Cylink Corporation can void the user’s authority to
operate the equipment.

LITHIUM BATTERY

The digital module in the AirLink Pro T1/E1 Rack Mount contains a lithium battery molded into the real-time
clock component. The lithium battery is NOT a customer-replaceable part. The lithium battery could explode
if mistreated. Do not attempt to expose the battery by opening the real-time clock component. Do not
attempt to recharge the battery. Do not dispose of the component by fire.

SYSTEM GROUNDING

Direct grounding of the antenna, mast, and tower serves as protection from lightning strikes and static
buildup. A direct electrical connection should be made to a suitable grounding rod at the base of the tower or
mast using at least #10 AWG ground wire, or its equivalent, and non corrosive hardware. For details and
safety standards, consult the appropriate local Electrical Codes or a similar document. Use lightning
arresters in appropriate places.

TOWER CONSTRUCTION

Compliance with local zoning and tower construction regulations is recommended when AirLink Pro T1/E1
Rack Mount systems require a tower. These regulations generally mandate that permits be obtained before
any tower construction begins. Check with local zoning and aviation authorities for more information.

FCC NOTICE TO USERS

The Airlink Pro T1 complies with Part 15 of the FCC rules. Operation is subject to the condition that this
device does not cause harmful interference.

Federal Communications Commission (FCC) Rules on spread spectrum devices, such as the AirLink Pro T1
or E1, require that you be notified of the following:

FCC regulations require that this device be professionally installed by a person knowledgeable in electronics
and trained in the correct installation of this device.

All interface cables must be shielded.
Operation of this device is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference that may cause undesired operation.
Changes or modifications not expressly approved by Cylink Corporation can void the user’s authority to

operate the equipment.

STATEMENT OF WARRANTY

CYLINK products, except as stated otherwise in an applicable price list, are warranted against defects in
workmanship and material for a period of one (1) year from date of delivery as evidenced by CYLINK’s
packing slip or other transportation receipt.

CYLINK’s sole responsibility under this warranty shall be to either repair or replace, at its option, any
component which fails during the applicable warranty period because of a defect in workmanship and
material, provided PURCHASER has promptly reported same to CYLINK in writing. All replaced Products or
parts shall become Cylink’s property.

CYLINK shall honor the warranty at CYLINK’s repair facility in Sunnyvale, California. It is PURCHASER’s
responsibility to return, at its expense, the allegedly defective Product to CYLINK. PURCHASER must
obtain a Return Materials Authorization (RMA) number and shipping instructions from CYLINK prior to
returning any Product under warranty. Transportation charges for the return of the Product to PURCHASER
shall be paid by CYLINK within the United States. For all other locations, the warranty excludes all costs of
shipping, customs clearance and other related charges. If CYLINK determines that the Product is not
defective within the terms of the warranty, PURCHASER shall pay CYLINK all costs of handling,
transportation and repairs at the then prevailing repair rates.

All the above warranties are contingent upon proper use of the Product. These warranties will not apply (i) if
adjustment, repair or parts replacement is required because of accident, unusual physical, electrical or
electromagnetic stress, negligence of PURCHASER, misuse, failure of electric power environmental
controls, transportation, not maintained in accordance with CYLINK specifications, or abuses other than
ordinary use (ii) if the Product has been modified by PURCHASER or has been repaired or altered outside
CYLINK’s factory, unless CYLINK specifically authorizes such repairs or alterations; (iii) where CYLINK
serial numbers, warranty data or quality assurance decals have been removed or altered.

CYLINK also reserves the right to make product improvements without incurring any obligation or liability to
make the same changes in Products previously manufactured or purchased. In no event shall CYLINK be
liable for any breach of warranty in an amount exceeding the net selling price of any defective Product. No
person, including any dealer, agent or representative of CYLINK is authorized to assume for CYLINK any
other liability on its behalf except as set forth herein. Nonpayment of any invoice rendered within the stated
payment terms automatically cancels any warranty or guarantee stated or implied. If any payment is due
CYLINK for services performed hereunder, it shall be subject to the same payment terms as the original
purchase.

CYLINK HEREBY DISCLAIMS ALL IMPLIED WARRANTIES ON PRODUCTS INCLUDING WITHOUT
LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. The warranties expressly stated herein are the sole obligation or liability on the part of CYLINK
arising out of or in connection with the sale or performance of the products.

Products Manufactured by Others - For products not manufactured by CYLINK the original manufacturer’s
warranty shall be assigned to PURCHASER to the extent permitted and is in lieu of any other warranty,
express or implied. For warranty information on a specific product, a written request should be made to
CYLINK.

IN NO EVENT WILL CYLINK BE LIABLE TO PURCHASER FOR (i) REPROCUREMENT COSTS; (ii) SPECIAL,
INDIRECT OR CONSEQUENTIAL DAMAGES; (iii) ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT, OR THE
USE OF PERFORMANCE OF CYLINK PRODUCTS, REGARDLESS OF WHETHER THE CAUSE OF ACTION
IS IN CONTRACT, TORT, INCLUDING NEGLIGENCE, OR ANY OTHER FORM.

No action, whether in contract or tort, including negligence, arising out of or in connection with this
Agreement, may be brought by either party more than eighteen (18) months after the cause of action has
accrued, except that an action for nonpayment may be brought within eighteen (18) months of the date of
last payment.

Table of Contents

Preface .........................................................................................................ix

Who Should Read This Guide................................................................. x

Prerequisite Knowledge .......................................................................... x

Guide Organization ................................................................................ x

Guide Conventions ................................................................................. xi

Typographic Conventions ............................................................... xii

Keyboard Usage..............................................................................xii

Notes, Cautions, and Warnings ....................................................... xii

Customer Support ............................................................................... xiii

Reader Response .................................................................................. xiv

Chapter 1: Product Description................................................................... 1-1

Introduction to the AirLink Pro T1/E1 ................................................... 1-2

Features and Capabilities ................................................................... 1-3

Airlink Pro T1/E1 Antenna..............................................................1-5

ASCII terminal interface.................................................................1-5

Programmed Configuration Parameters .......................................... 1-5

Monitoring and Diagnostic Capabilities ......................................... 1-5

T1/E1 Link Backup Capability ...................................................... 1-6

Alarm Relay Contacts ................................................................... 1-7

Order Wire Interface ..................................................................... 1-7

Fail-Safe Link .............................................................................. 1-7

Block Diagram .............................................................................. 1-7

Chapter 2: Installation and System Administration.................................... 2-1

Overview............................................................................................ 2-2

Unpacking ........................................................................................... 2-2

Remote Connection................................................................................2-3

Identifying Physical Features.............................................................. 2-3

Front Panel.................................................................................... 2-3

Rear Panel..................................................................................... 2-3

Rev. B - 1/97 v

Preparing a Place..................................................................................2-4

General Physical and Environmental Characteristics.......................2-5

Lightning Protection........................................................................2-5

Rack Mounting............................................................................... 2-5

Power and Grounding Requirements................................................. 2-5

Setting Up the System.......................................................................... 2-6

Installing the Antenna ................................................................... 2-6

Installing the AirLink Pro T1/E1 Rack Mount.................................. 2-8

Wiring for Burst Synchronization .................................................. 2-20

Checking Operation ........................................................................... 2-21

Initial Unit Configuration ............................................................ 2-21

Aligning the Antenna ................................................................... 2-23

Chapter 3: Configuration ........................................................................... 3-1

Overview ............................................................................................ 3-2

Using the ASCII Terminal Interface ..................................................... 3-2

Terminal Setup Requirements ......................................................... 3-2

Command-Line Interface................................................................ 3-3

Setting Administrative Parameters ............................................... 3-5

Site Name ..................................................................................... 3-5

Date and Time ............................................................................... 3-6

Password ....................................................................................... 3-7

Setting T1/E1 Line Parameters ............................................................. 3-8

Coding .......................................................................................... 3-8

Equalization ................................................................................. 3-9

Setting Link Parameters ..................................................................... 3-10

Application ................................................................................. 3-10

Burst Mode ................................................................................... 3-15

PN Code ....................................................................................... 3-16

RF Power Level ............................................................................ 3-17

Order Wire Type .........................................................................3-17

Interface Type (E1 Only)............................................................... 3-18

vi Rev. B - 1/97

Setting Alarm Control Parameters.......................................................3-18

Alarm Reporting .......................................................................... 3-18

Alarm Level ................................................................................. 3-19

1-Hour Errored Seconds Threshold ................................................ 3-20

1-Hour Unavailable Seconds Threshold ........................................ 3-20

24-Hour Errored Seconds Threshold ............................................... 3-21

24-Hour Unavailable Seconds Threshold ...................................... 3-22

Receive (Rx) Power Threshold ...................................................... 3-22

Transmit (Tx) Power Threshold ..................................................... 3-22

Setting Modem Parameters ................................................................. 3-23

Connections and Configuration....................................................... 3-24

Testing the Modem Link ................................................................ 3-25

Functions ...................................................................................... 3-26

RS-232 Modem Port Interface........................................................ 3-30

User Interface Additions ............................................................... 3-32

Getting AirLink Pro T1/E1 Configuration Information .......................... 3-39

Configuration Parameter Settings ................................................. 3-39

Threshold Settings ....................................................................... 3-38

Hardware and Software Revision Levels ...................................... 3-38

Command Keywords and Operands ..................................................... 3-39

Chapter 4: Operations and Maintenance ..................................................... 4-1

Overview ............................................................................................ 4-2

Acquiring Status Information ............................................................... 4-2

Viewing Status Information ........................................................... 4-3

Acquiring Alarm Information ............................................................... 4-5

The Event Queue ............................................................................ 4-6

AirLink Pro T1 Indicators ............................................................... 4-7

Acquiring Performance Information ..................................................... 4-11

Viewing Performance Information ................................................. 4-12

Resetting Performance Counters ..................................................... 4-13

Rev. B - 1/97 vii

Diagnostic Tools..................................................................................4-13

Radio QRSS Testing ..................................................................... 4-13

Loopback Tests ............................................................................. 4-15

Rack Mount Unit Working with Ruggedized Unit ................................4-22

Features of Various Units ..............................................................4-23

Appendix A: Messages .............................................................................. A-1

General Information ........................................................................... A-2

Fault Messages ................................................................................... A-3

Alarm Messages ................................................................................. A-3

Advisory Messages ............................................................................. A-4

Status Messages .................................................................................. A-5

Appendix B: Specifications ........................................................................ B-1

General Specifications ......................................................................... B-2

Interface Specifications ....................................................................... B-2

T1 DSX-1 Interface ........................................................................ B-2

E1 Interface General Specifications......................................................B-3

Output Specifications....................................................................B-4

Input Specifications......................................................................B-4

Radio Interface ................................................................................... B-5

Signal-to-Pin Assignments ........................................................... B-11

Terminal and Modem Adapter Cables..................................................B-11

Terminal Configuration ..................................................................... B-16

Configuration Defaults ...................................................................... B-19

Appendix C: Commands ............................................................................. C-1

Appendix D: Glossary ............................................................................... D-1

Index ................................................................................................... Index-1

viii Rev. B - 1/97

List of Figures

Figure Page Number

Figure 1-1 AirLink Pro T1/E1 Rack Mount Unit .................................1-2

Figure 1-2 Typical AirLink Pro T1/E1 Rack Mount

Operating Environment....................................................1-4

Figure 1-3 A Point-to-Point Backup Link.......................................... 1-6

Figure 1-4 Block Diagram of the AirLink Pro T1/E1 Rack Mount........1-8

Figure 2-1 AirLink Pro T1/E1 Rack Mount Front Panel........................2-3

Figure 2-2 AirLink Pro T1/E1 Rack Mount Rear Panel....................... 2-3

Figure 2-3 Typical Antenna Mounts...................................................2-7

Figure 2-4 23” Rack Mount..............................................................2-11

Figure 2-5 Alarm Relay Contacts....................................................2-14

Figure 2-6 Terminal Connection to the AirLink Pro

T1/E1 Rack Mount..........................................................2-15

Figure 2-7 Modem Connection to the AirLink Pro

T1/E1 Rack Mount..........................................................2-16

Figure 2-8 Two-Wire Order Wire Connection...................................2-16

Figure 2-9 Four-Wire Order Wire Connection..................................2-17

Figure 2-10 ELPAC Power Supply....................................................2-18

Figure 2-11 FORTRON Power Supply ..............................................2-19

Figure 2-12 Burst Sync Wiring ..........................................................2-20

Figure 2-13 Test Point Locations .......................................................2-21

Figure 3-1 Point-to-Point Link........................................................2-24

Figure 3-2 Hub Application Different Paths...................................3-12

Figure 3-3 Hub Application Same Paths.........................................3-13

Figure 3-4 AirLink Pro T1/E1 Rack Mount Two Part Repeater Link...3-14

Figure 4-1 Conventional Carrier Failure Response.............................4-7

Figure 4-2 AirLink Pro T1 Carrier Failure Response...........................4-7

Figure 4-3 Front Panel Indicators......................................................4-9

Figure 4-4 Rear Panel Indicators.......................................................4-9

Figure 4-5 AirLink Pro T1/E1 Rack Mount QRSS Test.......................4-14

Figure 4-6 AirLink Pro T1/E1 Rack Mount Loopback Tests................4-16

Rev. B - 1/97

ix

Figure 4-7 AirLink Pro T1/E1 Rack Mount in Normal Operation ......4-17

Figure 4-8 AirLink Pro T1/E1 Rack Mount in

Local Loop Test, Near End..............................................4-18

Figure 4-9 AirLink Pro T1/E1 Rack Mount in

Remote Loop Test, Near End...........................................4-19

Figure 4-10 AirLink Pro T1/E1 Rack Mount in

Local Loop Test, Far End................................................4-20

Figure 4-11 AirLink Pro T1/E1 Rack Mount in

Remote Loop Test, Far End..............................................4-20

Figure B-1 Terminal Cable: AirLink Pro T1 Terminal Port

to a DB-25 Terminal Port................................................B-16

Figure B-2 Modem Cable: AirLink Pro T1 Terminal Port

to a DB-25 Modem Port...................................................B-16

Figure B-3 Terminal Cable: AirLink Pro T1 Terminal Port

to a DB-9 Terminal Port..................................................B-17

Figure B-4 Modem Cable: AirLink Pro T1 Terminal Port

to a DB-9 Modem Port....................................................B-17

x

Rev. B - 1/97

P

REFACE

REFACE

P

About This Guide

About This Guide

The AirLink Pro T1/E1 Rack Mount Installer’s Guide covers the
information needed to unpack, install, configure, and operate the
AirLink Pro T1 or the Airlink Pro E1 system. Begin by reading this
preface for more information about how this guide supports your use
of the AirLink Pro T1/E1 Rack Mount system.

Inside this chapter:

Who Should Read This Manual...............................................xiii

Prerequisite Knowledge .......................................................xiv

Guide Organization..................................................................xiv

Guide Conventions....................................................................xv

Customer Support ............................................................... xvii

Reader Response ................................................................. xviii

Rev. B - 1/97 xi

AirLink Pro T1/E1 Rack Mount Installer’s Guide
About This Guide

Who Should Read This Manual

This is an installation guide for persons who must perform or coordinate the
tasks associated with unpacking and installing the AirLink Pro T1/E1 Rack
Mount.

Prerequisite Knowledge

Throughout this guide are explanations and procedures that presume working
familiarity with basic telephone trunking and transmission concepts and
practices, as well as basic digital data communications concepts and practices.
If you are not familiar with the concepts and practices involved in these
disciplines, we recommend that you familiarize yourself with them before
proceeding.

Also, this guide does not attempt to provide any detailed system planning or
installation information on radio frequency (RF) antenna assemblies or Path
analysis . For details about these topics, please refer to the Airlink Applications
and Site Planning Guide.

Guide Organization

Each of the chapters and appendices in this guide begins by introducing the
contents of that chapter or appendix. Before beginning the installation process,
you should read the introductions to all of the guide portions so that you have a
sense of what each portion provides.

When you come to a procedure, you should skim through the entire procedure
before you begin performing the step-by-step instructions. By doing this, you
will know what is coming, and will be prepared with the appropriate
information, equipment, or tools.

The information in this guide is organized according to the sequence of tasks
necessary to plan for unpacking, installing, and configuring, as well as operating
and maintaining the AirLink Pro T1/E1 Rack Mount system.

NOTE The Airlink Pro T1 and the Airlink Pro E1 are similar radio units. The installation, system

administration, and the operational procedures for the two units have therefore been
combined into this manual. The minor differences between the two units are indicated
wherever necessary.

xii

Rev. B - 1/97

The guide is divided into the following sections:

Guide Section Description

AirLink Pro T1/E1 Rack Mount Installer’s Guide

About This Manual

Chapter 1:
Product Description

Chapter 2:
Installation and
SystemAdministration

Chapter 3:
Configuring the AirLink Pro
T1/E1 Rack Mount

Chapter 4:
Operations and Maintenance

Appendix A:
Messages

Appendix B:
Specifications

Appendix C:
Commands

Appendix D:
Glossary

Index Provides a quick reference to assist you in locating

Describes the features and capabilities of the AirLink
Pro T1/E1 system.

Outlines the procedures for unpacking and installing the
AirLink Pro T1/E1 Rack Mount system hardware,
connecting the antenna, and performing initial operation
checks.

Provides instructions for configuring the AirLink Pro
T1/E1.

Contains information on the operation and maintenance
of the AirLink Pro T1/E1 system.

Lists the system alarm, status, and error messages.

Contains a quick reference to the AirLink Pro T1/E1
Rack Mount system specifications.

Provides a list of frequently used commands.

Provides definitions for the terms commonly used
throughout this guide.

important topics in the guide.

Guide Conventions

The procedures and instructions in this guide use the following conventions:

❚ Typography that highlights information within text, including screen

displays, figures, and tables.

❚ Keyboard usage conventions.

❚ Notes that add information, point to other important considerations, or

alert you to possible risks to yourself, your equipment, or your data.

Rev. B - 1/97

xiii

AirLink Pro T1/E1 Rack Mount Installer’s Guide
About This Guide

Typographic Conventions

❚ Terminal displays are shown as text in the Courier font:

AIRLINK PRO T1> get configuration

Site Name: Sunnyvale 2

Application: 6. Slave unit in a point-to-point Link

Burst Mode: Normal

Coding: B8ZS

Equalization: 0 - 133 ft

PN Code: 1

RF Power: 10 dBm

Alarm Reporting: Immediate

Alarm Level: Status

Date/Time: May 1 1996 10:35:00

❚ Bold Courier font indicates a command keyword or operand that you

are expected to type exactly as shown.

❚ Italic Courier font indicates a command operand that you must

replace with a selected value when you type the command.

❚ Named keys in text are shown enclosed in angle brackets. The notation

<Return> is used to indicate either the Return key or the Enter key.

Keyboard Usage

❚ All command examples shown in text are executed by typing the command

and then pressing <Return>.

❚ Two or more keys that must be pressed simultaneously are shown in text

linked with a plus (+) sign: <Ctrl>+C.

Notes, Cautions, and Warnings

NOTE The standard text note highlights important or additional

CAUTION These notes warn you of situations that could result in damage

information for you to consider.

to your equipment or loss of data if you do not heed the
instructions.

xiv

Rev. B - 1/97

WARNING These notes warn you of situations that could endanger your

Customer Support

If after reading this guide you encounter any trouble installing or using the

AirLink Pro T1/E1 Rack Mount, please contact your local distributor. If

problems are not resolved, you can call Cylink’s Customer Service for assistance.

The telephone numbers are:

Domestic (USA)

1-800-545-6608 Sunnyvale, CA
1-800-814-5587 Jersey City, NJ

International

AirLink Pro T1/E1 Rack Mount Installer’s Guide

About This Manual

personal health if you do not heed the instructions.

1-408-735-5822 Sunnyvale, CA
1-201-333-3400 Jersey City, NJ
[phone] Singapore
[phone] United Kingdom
[phone] India
[phone] Pakistan

Domestic and International Customer Service Fax

1-408-735-6641 Sunnyvale, CA
1-201-333-8560 Jersey City, NJ
[phone] Singapore
[phone] United Kingdom
[phone] India
[phone] Pakistan

You can also contact Cylink’s Tech Support through the Internet at the

following address:

[e-mail]

If you need to return equipment, call Customer Service to obtain a Return

Material Authorization (RMA) number prior to returning the equipment. The

RMA number must be placed on the outside of the shipping carton. Please be

prepared to provide the unit serial number, software version, and a detailed

description of the problem.

Rev. B - 1/97

xv

AirLink Pro T1/E1 Rack Mount Installer’s Guide
About This Guide

Return all equipment to:

Cylink Corporation

1350 Bordeaux Drive

Sunnyvale, CA 94089

Attn: Repair and Return Department

RMA No: xxxxxxxxxx

Reader Response

Cylink’s Technical Publications Department wants its documents to meet your
requirements. To this end, your ideas about the documentation are valuable.
After you have had a chance to read and use the guide, we encourage you to
submit your comments to

Manager, Technical Publications

Cylink Corporation

910 Hermosa Court

Sunnyvale, CA 94086

You may also submit your comments through the Internet at the following
address:

[e-mail]

Cylink may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligations whatsoever.

xvi

Rev. B - 1/97

C

HAPTER

HAPTER

C

Product Description

Product Description

This chapter introduces the AirLink Pro T1/E1 Rack Mount and
provides an overview of the features and capabilities.

1

1

Inside this chapter:

Introduction to the AirLink Pro

T1/E1 Rack Mount ...........................................................1-2

Features and Capabilities ...................................................1-3

Rev. B - 1/97 1-1

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Product Description

Introduction to the AirLink Pro
T1/E1 Rack Mount

The AirLink Pro T1 and the AirLink Pro E1 systems are spread-spectrum
transceivers that operate in the license-free 5.725 to 5.850 GHz (C-band)
Industrial Scientific Medical (ISM) band. The AirLink Pro T1/E1 Rack Mount
uses a Spread Spectrum modulation technique to create a high-quality, point­to-point radio link between itself and another AirLink Pro T1/E1 Rack Mount
located many miles away.

The AirLink Pro T1/E1 Rack Mount (Figure 1-1) unit is a rack mount unit that
mounts in a 19 or 23 inch equipment rack or cabinet. The design of the unit can be
aisle or flush mounted. Status and Alarm LEDs are duplicated on the unit’s
rear panel so that it can be flush mounted against a wall.

1-2

Figure 1-1

AirLink Pro T1/E1 Rack Mount - Full View

Rev. B - 1/97

Features and Capabilities

The AirLink Pro T1/E1 Rack Mount supports a range of sophisticated control

capabilities and options, including:

❚ Remote control of far-end

❚ Built-In Testing Equipment (BITE)

❚ Flexible, interactive user interface through an ASCII terminal

❚ Easily modified configuration parameters

❚ Local and remote monitoring, diagnostic, and maintenance capabilities

❚ Separate end-to-end communication channel for control and order wire

signals. Control signals and order wire voice signals do not disturb the T1
channel

❚ Every radio-frequency (RF) burst verified by an error-checking algorithm

AirLink Pro T1/E1 Rack Mount Installer’s Guide

Product Description

The AirLink Pro T1 and E1 are similar radio units with minor differences in

their internal structures. These are:

❚ The AirLink Pro T1 and E1 have different internal clock oscillators

❚ The AirLink Pro T1 supports the Bipolar with 8-Zero Substitution (B8ZS)

coding format

❚ The AirLink Pro E1 supports the High Density Bipolar 3 (HDB3)

coding format

❚ The AirLink Pro E1 allows an electrical-interface option between Balanced

and Unbalanced

❚ The AirLink Pro T1 operates at 1.544 Mbps and the E1 at 2.048 Mbps

❚ The operating range between two AirLink Pro T1 units is up to 40 km and

that of two E1 units is 35 km

In a typical installation, an AirLink Pro T1 or E1 pair is installed between a

user’s communication facility—Data Circuit Equipment (DCE) or network—and

the Data Terminating Equipment (DTE). Figure 1-2 shows the AirLink Pro

T1/E1 Rack Mount in a typical operating environment.

Rev. B - 1/97

1-3

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Product Description

Figure 1-2
Typical AirLink Pro T1/E1 Rack Mount Operating Environment

The AirLink Pro T1/E1 Rack Mount link is effectively transparent to the T1/E1
equipment on either end:

❚ Accepts T1/E1 as input
❚ Presents T1/E1 as output

AirLink Pro T1 operation is independent of the protocol used, so the AirLink Pro
T1 supports both the Bipolar with Eight-Zero Substitution (B8ZS) and the
Alternate Mark Inversion (AMI) coding formats. The AirLink Pro E1 supports
both the High Density Bipolar 3 (HDB3, and AMI) coding formats. These
formats do not interfere with the framing and maintenance channel used
between T1/E1 links so the AirLink Pro T1/E1 Rack Mount works with Extended
Frame format, ISDN Primary Rate Services, and so on.

The AirLink Pro T1/E1 Rack Mount provides full-duplex, radio-to-radio
communication that follows a Ping-Pong analogy: while one unit transmits a
radio burst, the other unit receives that burst. After the other unit receives a
complete burst, it waits through a guard interval before turning on its
transmitter and transmitting its burst.

The ping-pong radio-to-radio communication is invisible to the T1/E1
equipment on either end of the link because the digital buffering of the AirLink
Pro T1/E1 Rack Mount produces a smooth T1/E1 bit stream at the user interface.

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Rev. B - 1/97

AirLink Pro T1/E1 Rack Mount Installer’s Guide

Product Description

Buffering is only a few milliseconds, so no perceptable degradation occurs to

voice or data communications.

AirLink Pro T1/E1 Rack Mount Antenna

The antenna is usually a two-foot or four-foot solid-parabolic dish for the 5.7

GHz C-band, with a narrow beam and high gain. For other kinds of antennas,

contact your distributor.

The AirLink Pro T1/E1 Rack Mount ASCII Terminal User Interface

The AirLink Pro T1/E1 Rack Mount ASCII terminal user interface is an

EIA/TIA-232 interface that allows a terminal device or personal computer to

control and monitor AirLink Pro T1/E1 Rack Mount operation at either end of

the link. The connection to the EIA/TIA-232 interface can be either a direct

connection (device to port), or an indirect connection (device to modem to port)

for dial-up operation.

Programmed Configuration Parameters

AirLink Pro T1/E1 Rack Mount operation is governed by user-selectable

configuration and control parameters that reside in the non-volatile memory of

the unit. These parameters are displayed and controlled through a terminal

device that can access both the local and remote unit. When power is lost and

then restored, the system reconfigures itself from its protected configuration

database.

A long-life lithium battery protects all system configuration settings during

power losses. The battery is part of the non-volatile memory/real-time clock

circuitry on the digital module in the AirLink Pro T1 and has a 10-year storage

life (in the absence of power to the AirLink Pro T1/E1 Rack Mount).

Refer to Chapter 3, Configuration, for more information on changing

configuration parameter settings.

Monitoring and Diagnostic Capabilities

The AirLink Pro T1/E1 Rack Mount system constantly monitors the quality of

the wireless link, checking the receive RF signal level, bit errors, and many

other critical factors. This information is stored in an internal database of

status and performance information that the AirLink Pro T1/E1 Rack Mount

uses, in part, to derive the events that are stored in the event queue. As alarm

events occur, they are signaled through indicators on the front panel of the

Rev. B - 1/97

1-5

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Product Description

AirLink Pro T1/E1 Rack Mount and are entered in the event queue. To report
alarms, attach a modem and dial-out to the maintenance center.

Using the terminal user interface, query either the local AirLink Pro T1/E1
Rack Mount or the remote AirLink Pro T1/E1 Rack Mount for status, performance
and alarm information, and make configuration changes for either the local or
remote end of the link.

The AirLink Pro T1/E1 Rack Mount also provides bit-error and loopback tests to
isolate problems. Initiate tests in the local AirLink Pro T1/E1 Rack Mount or in
the remote AirLink Pro T1/E1 Rack Mount through the terminal user interface.

Refer to Chapter 4, Operations and Maintenance, for information on monitoring
operation and using diagnostic tools and procedures.

T1/E1 Link Backup Capability

The T1/E1 link backup capability built into the AirLink Pro T1/E1 Rack Mount
enables an AirLink Pro T1/E1 Rack Mount pair to provide a parallel T1/E1
path (the RF link) to a standard T1/E1 line (see Figure 1-3).

1-6

Figure 1-3

A Point-to-Point Backup Link

Under normal operating conditions, the primary (protected) T1/E1 line is routed
to an external device such as a CSU through the AirLink Pro T1/E1 Rack Mount
and carries its normal T1/E1 traffic.

In the event of a fault in the primary T1/E1 link, each DSU/CSU generates a
relay control signal that is transmitted to the attached AirLink Pro T1/E1 Rack

Rev. B - 1/97

Mount units. The AirLink Pro T1/E1 Rack Mount pair switch the protected

T1/E1 line to provide a protected bypass T1/E1 path.

The backup switch can be opened or closed by an external switch or relay wired

to the CSU SEL connector on the rear panel of the AirLink Pro T1/E1 Rack

Mount.

Alarm Relay Contacts

Major and minor alarm contacts are built into the AirLink Pro T1/E1 Rack

Mount. If an alarm occurs such that an entry is put into the event queue, the

alarm contacts switch to the alarm state for as long as the alarm event persists.

For more information on the AirLink Pro T1/E1 Rack Mount alarm relay

contacts, refer to Chapter 2, Installation and System Administration.

Order Wire Interface

The Order Wire interface is an end-to-end voice communication channel that is

carried on the radio link between the local and remote AirLink Pro T1/E1 Rack

Mount units. Maintenance and service personnel can connect telephones to order

wire ports on the local and remote AirLink Pro T1 units and have direct voice

communication between the local and the remote site.

AirLink Pro T1/E1 Rack Mount Installer’s Guide

Product Description

Order Wire communication can only occur when there is an active radio link

between the local and remote AirLink Pro T1/E1 Rack Mount units (refer to

Chapter 2, Installation and System Administration). The Order Wire channel

is outside of the T1/E1 channel and does not affect the user’s data. The Order

Wire can also be used with 4-wire modems in a large network management

system.

Fail-Safe Link

A reliable link can be created by eliminating all “single points of failure.” This

is illustrated in Figure 3-1 and discussed in detail in Chapter 3, Point-to-Point

Link.

Block Diagram

The following illustration is a functional block diagram of the Cylink AirLink

Pro T1/E1 Rack Mount.

Rev. B - 1/97

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AirLink Pro T1/E1 Rack Mount Installer’s Guide
Product Description

1-8

Figure 1-4

Block Diagram of the AirLink Pro T1/E1 Rack Mount

Rev. B - 1/97

C

HAPTER

HAPTER

C

Installation and

Installation and

System Administration

System Administration

This chapter outlines general planning and the procedures for
unpacking, and installing the AirLink Pro T1/E1 Rack Mount
hardware, connecting cables, and performing power-up checks. This
chapter also contains important instructions regarding safety in setting
up the AirLink Pro T1/E1 Rack Mount system.

2

2

Inside this chapter:

Overview ................................................................................ 2-2

Unpacking .............................................................................. 2-2

Identifying Physical Features ........................................... 2-3

Preparing a Place.................................................................2-4

Setting Up the System ...................................................... 2-6

Checking Operation ........................................................... 2-19

Rev. B - 1/97 2-1

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Installation and System Administration

Overview

This chapter discusses the general technical requirements of antenna and RF
transmission line installation,and focuses on the task of installing the AirLink
Pro T1/E1 Rack Mount system at each end of the communication link,
integrating all of the equipment, and performing a system check and alignment
before turning the system over to normal customer traffic.

The components of AirLink Pro T1/E1 Rack Mount system are:

❚ AirLink Pro T1/E1
❚ AirLink Pro T1/E1 Rack Mount antenna and antenna cable

Depending upon your system plan, you will be installing all or some of these
AirLink Pro T1/E1 Rack Mount system components at each end of a link. The
following sections describe both required and optional system components.

Unpacking

The first step in the installation process is to take all of the materials out of
the shipping carton(s) and check that you have everything shown on the
packing list(s). If something is missing, contact your local distributor. Inspect
the unit for any possible damage.

If you discover shipping damage, repack the unit and notify the shipping
representative.

NOTE Save the shipping cartons and packing materials. You will need the carton and materials if

you need to ship your equipment.

After unpacking and confirming the contents of the shipment, place the AirLink
Pro T1/E1 Rack Mount system components on a flat surface to allow enough space
to work around them.

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Rev. B - 1/97

Identifying Physical Features

Figure 2-1

AirLink Pro T1/E1 Rack Mount Front Panel

Front Panel

The AirLink Pro T1/E1 Rack Mount front panel (Figure 2-1) consists of a metal

panel that contains five status and alarm LEDs identified with graphical icons

and two RJ-11 jacks.

AirLink Pro T1/E1 Rack Mount Installer’s Guide

Installation and System Administration

Rear Panel

The AirLink Pro T1/E1 Rack Mount rear panel (Figure 2-2) consists of a metal

panel containing four external equipment connectors, seven terminal blocks, and

an n-type antenna connector. Table 2-1 lists the rear-panel connectors and

describes their functions.

Figure 2-2

AirLink Pro T1 /E1 Rack Mount Rear Panel

Rev. B - 1/97

2-3

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Installation and System Administration

Table 2-1

AirLink Pro T1/E1 Rack Mount Rear-Panel Connectors

Connector Type Function

Network Management 9-Pin Male

Subminiature D
Terminal RJ - 11 Terminal connection
CSU 6-Pin Captive

Wire Terminal

Block
E1 Out BNC Not used for T1 unit; In E1 unit, used for

DTE 4-Pin Captive

Wire Terminal

Block
E1 In BNC Not used for T1 unit; In E1 unit, used for

Order Wire 4-Pin Captive

Wire Terminal

Block
BSYNC 6 Pin Captive

Wire Terminal

Block
Minor Alarm 4-Pin Captive

Wire Terminal

Block
Major Alarm 6-Pin

CaptiveWire

Terminal Block
Power 6-Pin Captive

Wire Terminal

Block
Antenna N type female Antenna connection

Connects a modem to the AirLink Pro
T1/E1.

Connects the T1/E1 Line from an external
device such as a CSU. Used for wire line
backup only.

configuring Unbalanced Interface option
T1/E1 connection to the DTE

Unbalanced Interface option
Connection for Four wire Order Wire unit

Burst sync connection

Minor alarm relay connection

Major alarm relay connection

Power connection

Preparing a Place

Because of the special planning requirements associated with installing a
microwave system, review some of the general guidelines regarding
installation preparation to ensure that the site is suitable to the purpose.

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AirLink Pro T1/E1 Rack Mount Installer’s Guide

Installation and System Administration

General Physical and Environmental Characteristics

The AirLink Pro T1/E1 Rack Mount radio unit measures approximately 17
inches wide, 3 inches high, and 10 inches deep, and weighs approximately 10
pounds.

Lightning Protection

The AirLink Pro T1/E1 Rack Mount is provided with secondary protection on all
signal leads to the printed circuit assemblies in the unit. If the AirLink Pro
T1/E1 Rack Mount system is being installed in an area where lightning can be a
problem, primary protection, such as gas tubes or spark gaps, is required (Cylink
distributors can provide these).

Rack-Mounting

The AirLink Pro T1/E1 Rack Mount mounts indoors in a 19-inch or 23-inch
equipment rack or cabinet. The rack-mount hardware kit, which consists of a
pair of mounting brackets and all required fasteners, is included in the shipping
carton with the AirLink Pro T1/E1 Rack Mount.

Power and Grounding Requirements

The AirLink Pro T1/E1 Rack Mount operates at 24VDC or 48VDC. Either the
positive or negative input is connected to the ground, or left floating. External
circuit protection not exceeding 2 amps is required.

Table 2-2

Power Requirements

Input Voltage 21 to 56 VDC
Input Power 25 Watts
Input Current 1.0 Amps @ 24 Volts

500 Ma @ 48 Volts
Input Polarity Input is floating. Either input may be grounded
Input Protection Nominal fuse = 2.0 A Slow Blow
Input Reverse

Voltage Protection

Provided. Series diode. No current will flow if the

input voltage is reversed.

Rev. B - 1/97

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AirLink Pro T1/E1 Rack Mount Installer’s Guide
Installation and System Administration

NOTE No internal fusing is provided, because to do so would violate the specifications of

UL1459 section 70. (No fusing is allowed in the grounded side of a DC input circuit unless
the hot side is also fused.) When the fuse in the hot side blows, the fuse in the grounded
input must also blow. Since this equipment accepts either polarity, external circuit

protection must be provided in the hot side of the feeder circuit.

Setting Up the System

The following sections outline the procedures for installing, cabling, and
bringing up an AirLink Pro T1/E1 Rack Mount system. Some of the steps require
special knowledge, experience, tools, and assistance from another person.

Installing the Antenna

Antennas are generally installed by persons who have the knowledge,
experience, and tools to handle the somewhat specialized task. The following
sections are intended as a general summary of the process, and not as a complete
description. A successful antenna installation effort is the culmination of all
the site and route preparation, and path analysis.

Typical Antenna Mounts

An antenna for a microwave system such as the AirLink Pro T1/E1 Rack Mount
is typically equipped with mounting hardware that allows the antenna to
attach to a length of pipe that can then be mounted in several ways, depending
upon the user requirements, site conditions, and local building codes (see
Figure 2-3).

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Rev. B - 1/97