ANT-20 Advanced Network Tester SONET/SDH

The flexible, high performance test platform

Equipped to Meet the Challenges of Advanced Network Testing

In the fiercely competitive telecommunications arena, technological and

economic excellence is crucial to commercial success. JDSU, with its firm
commitment to sustained leadership in all aspects of the communications
network life cycle, is dedicated to helping customers rise to the markets
challenges in order to ensure economic value in their businesses.
Delivers SONET and SDH testing from 1.5 Mbps to 10 Gbps and DSn, ATM
and PDH testing
Provides jitter/wander measurements up to OC-192/STM-64
With technologies developing rapidly the JDSU ANT-20 advanced network tester
is designed to meet customers future needs. This flexible platform enables
customers to adapt to technological change and can accommodate the DSn,
SONET, SDH and/or ATM requirements, as well as new standards, higher bit rates
and the intelligent system components of the future.
The ANT-20 is suitable for a number of applications including development labs,
conformance and functional tests in production, installation and acceptance and
can help pinpoint potential problems within in-service networks. The highly
flexible measurement capabilities of the ANT-20 make it possible to investigate all
major quality parameters on diverse interfaces, ranging from simple bit error rate
tests (BERT) to performance and pointer analysis, covering even complex
synchronization problems. The ANT-20 offers a customizable test solution that
can be tailored to specific individual needs.

OC-3
ADM
45 M
ATM
network

OC-12
ATM
STM-1
ATM

STM-4c

ADM

STM-64

STM-1, 4, 16
ADM
STM-16c
SDH

STM-16
MUX

MUX
DWDM

A comprehensive platform for monitoring all network test points

MUX

ADM

1,5 M
ISP

SONET
STM-16

ADM

DXC

OC-48
ADM

ADM

2, 8, 34, 140 M
STM-1

ADM

Ease of Use Within a Familiar Work Environment

JDSU ANT-20

Compact for field work

Free slot for OC-48/STM-16 or jitter
up to 622 Mbps. SONET and SDH
mappings, even in combination with
ATM realtime analysis work on
SONET/SDH/DSn interfaces from
1.5 Mbps to 2.5 Gbps.
JDSU ANT-20se

More in a portable unit

The ANT-20se is a four-slot solution
that offers greater functionality than
the ANT-20 and is prepared for future
combinations of different tests.
Combination and parallel operation
of ATM and all bit rates up to
OC-48/STM-16 with jitter/wander
is possible in this single unit.
JDSU ANT-10G

JDSU works closely with systems manufacturers and network operators to define
new quality standards and guarantee optimum ease of use. From detailed
parameter settings and test results, to simple operation for DSn, SONET, SDH
with all bit rates from 1.5 Mbps to 10 Gbps and ATM, the ANT-20 delivers
sophisticated, precise test capabilities that can be used for all the above bit rates as
well as ATM.

Clear results
All results can be viewed at a glance, either numerically as a complete list of error
values, or graphically as a histogram. The zoom function is useful for examining
results from a longer test interval with various resolutions. The day or hour
resolution provides an overview whilst the minute or second resolution enables
analysis of critical phases. To ensure accuracy, the duration of all alarms is saved
with 100 ms resolution.

Familiar environment
The ANT-20s built-in PC with its Windows-based design makes integration and
use of the instrument in various work environments simple and easy. Test results
can be saved internally in the ANT-20 or on diskette and printed in report format
on any standard printer. PC software such as Microsoft Excel or Word can also
be used for documentation purposes. The ANT-20s built-in help functions are
easily accessible, delivering answers and technical information directly to the user.

Equipped for future developments

With its OC-192/STM-64 optical
interface, ANT-10G extends the
capabilities of the ANT-20se to
handle the higher bit rates of 10-Gbps
systems. Access to all common
interfaces from 1.5 Mbps to 10 Gbps
is possible and all standardized
mappings are covered. The solution
also offers an integrated state-of-theart jitter and wander test module.

Large color touchscreen

The large color touchscreen is ideal for field use and gives a structured overview
of all test results thus helping prevent faulty settings. Several windows may remain
open at once in order to access information at-a-glance without the need to
switch between menu screens.

Simple operation with instant access keys

Instant access keys enable direct and speedy launch of the ANT-20 with the users
most often-selected settings. This reduces the time and cost associated with taking
the same measurements repeatedly, as occurs during installation and acceptance
of SONET/ SDH networks. The design of the ANT-20 allows an almost unlimited
number of instrument settings to be stored. Customization features enable eight
preferred applications to be launched directly from the ANT-20 desktop.
Individual keys can be linked to a number of functions and options including
stored settings for the ANT-20 or CATS Test Sequencer, the user manual stored
in PDF format or other frequently needed documents. The ANT-20 is able to
perform measurements using predefined settings at the touch of a button.

Modular Design Allows User Customization

SONET OC-48/SDH STM-16

Electrical and optical interfaces for

2.488 Mbps
ATM BAG

Easy to operate broadband analyzer/

generator (BAG) module with ATM
test controller for accepting,
installing, testing and maintaining
ATM systems on switched and
permanent virtual connections (SVC)

SONET OC-192/SDH
STM-64

DSn/SONET up to OC-12
and PDH/SDH up to STM-4

Electrical and optical

interfaces for 9.953
Mbps and integrated
jitter/wander generation and analysis as
per ITU-T O.171 and
O.172

Electrical and optical

interfaces for both
SONET/DSn and
SDH/PDH (fixed module,
various configurations
possible)

Jitter/wander at OC-48/STM-16

Jitter/wander generation and

analysis at 2.488 Mbps as per
ITU-T O.171 and O.172

Jitter/wander up to
OC-12/STM-4
High-performance computer

High-performance computer built

into ANT-20 (fixed module) with
mouse port, PCMCIA interfaces A and
B, external keyboard port, external
monitor port, external printer port
and RS-232 interface

Jitter/wander
generation and
analysis at all bit
rates up to
622 Mbps as per
ITU-T O.171
and O.172

Power splitter

Optical power
splitter for external
protected monitor
point

Innovative Functions Offer Ideal Support

The ANT-20 contains everything needed for network optimization and can be
used in a number of application areas including:

Assurance of correct APS operation

Delayed ring switching can lead to entire ring spans or even whole rings being
taken out of operation. The ANT-20 simplifies measurement of the switchover
time from working line to protection line. Should a fault occur, the instrument
provides detailed analysis of the APS protocol procedures delivering immediate
detection of faulty commands.

Assessment of quality on OC-192c and STM-64c lines

OC-192c and STM-64c can now be used to provide uniform bandwidths for IP
and ATM. The previous limit of approximately 2.4 Gbps was implemented using
OC-48c (2.5 Gbps with SDH STM-16c). OC-192c and STM-64c quadruple the
payload capacity to approximately 10 Gbps (9.6 Gbps for STM-64c). This
technology is used primarily to link high-speed data networks.
However, large bandwidth becomes ineffective if data packets are continually
retransmitted due to transmission errors. The ANT-20 supports this new
technology by helping to pinpoint problems quickly. When equipped with the
OC-12c/STM-4c, OC-48c/STM-16c and OC-192c/STM-64c options, the ANT-20
becomes a full-featured concatenation tester.

Sample results from a switchover time

measurement

Test executions and results analysis for SONET and SDH

Save time and avoid errors with automatic test functions

To assist technicians with commonly encountered issues such as unknown signal
structure, the ANT-20 provides automatic test modes to simplify test startup and
provide a fast overview of four-channel systems. Multistage analysis allows the
status of individual channels to be viewed at the click of the mouse.
Autoconfiguration
SCAN
Trouble SCAN
Search
Auto SCAN

Searches for signal and unknown content

Tests for error-free connection of all SONET channels
Checks all incoming SONET channels for errors/alarms
Searches for test channels in SONET signals
Analyzes the structure of a SONET signal up to OC-192

Check and optimization of quality of service (QoS) in ATM

networks
The ANT-20 effectively tests ATM networks and/or network elements (NE) for
correct operation and QoS. Depending on the application, the ANT-20 also has
test solutions for permanent virtual circuits (PVC) as well as switched virtual
circuits (SVC).
Major applications include:
Signaling emulation as per ATM Forum UNI 3.0/3.1 and ITU-T Q.2931/
Q.2961 SVC and PVC testing
Automatic end-to-end testing of SVCs
Realtime measurement of ATM QoS on four channels simultaneously
Testing of all traffic contract parameters
ATM terminal simulation for dial-up circuits
Graphical evaluation using load charts

Trouble Scan

Simple Remote Operation, Interactive or Fully Automated

Remote operation is easy with ANT-20 requiring just a laptop and modem or
LAN connection. The Windows-based design of the ANT-20 allows the same
software and identical user interface to be run and displayed on the instrument
and the laptop software installed on ANT-20 like the JDSU CATS Test Sequencer
can therefore be operated remotely allowing complicated, time-consuming tests
to be conducted easily from the office or home.
Time saving applications include:
Operation of several ANT-20s from a central office; ideal for point-to-point
measurements for example
Assistance with on-site test problems
A specialist in the main office can monitor the ANT-20s user interface and
advise the local operator on how to solve the problem(s)
Perform interactive measurements or test sequences
An external test point scanner is used to switch between prepared test points
from any location at any time

PC or workstation

Remote operation
PC

PSTN or LAN

Remotely operated
ANT-20
Remote operation of the ANT-20

Automated Test Sequences with Reproducible Results

Save time and money through automation

The JDSU CATS* Test Sequencer a test-automation software package that runs
on the ANT-20s built-in PC is the ideal tool for automating repetitive test
procedures. It provides support in handling standard tests, enabling users with
little or no programming background to create test sequences for their own
specific needs. A number of predefined, user-modifiable test steps are provided for
immediate use. Test automation is particularly important when commissioning
NEs and/or lines. The various measurements can be performed in sequence and
documented.

Sample test sequence for commissioning 2 Mbps leased lines

Basic settings

TX 2 Mbps
RX 2 Mbps
View alarm
Continuity check
Pulling range
Check LOS
Jitter measurement
Jitter tolerance
Delay measurement
G.826 Analysis (for SONET)
Thank you

Test of parameters

Test end

Set TX signal structure

Set RX signal structure
Check for no alarms
BERT in channel
Check pulling range (offset)
Set LOS, wait for AIS
Measure intrinsic jitter
Measure jitter tolerance
Measure signal delay
G.826 Analysis, 24 h
End of test

*CATS CVI application test sequencer

Start

Setup
ANT-20

Error
Test

Sensor
Test

Test
Report

Execution of a typical test sequence

Jitter
Test

Pass

A Reliable Solution for Jitter and Wander

Tight standards for synchronization

Higher bit rates, combined with synchronous technology demand greater clock
quality within networks. For quality assurance purposes, international standards
have defined stringent limits for jitter and wander. Precision equipment can test
whether the outgoing clock quality meets these standards and how NEs respond
to poor clock quality.

A comprehensive solution for jitter and wander

The ANT-20 can generate and analyze jitter and wander for bit rates from
1.5 Mbps to 9.953 Mbps and is fully compatible with ITU-T recommendation
O.172, making the instrument the ideal solution for handling diverse tests and
delivering informative, comparable, precise results. The following parameters can
be measured:
Output jitter
Maximum tolerable jitter (MTJ)
Jitter transfer function (JTF)
Mapping and pointer jitter (combined jitter)
Peak-to-peak jitter, RMS jitter, and jitter vs. time
Wander generation and analysis
Maximum time interval error and time deviation (MTIE/TDEV) offline
analysis
Maximum tolerable wander (MTW)

Additional functions to keep you ahead

A range of additional functions allow the ANT-20 to perform fast, reliable wander
analysis with results reflecting:
Time interval error (TIE)
MTIE, based on TIE data
MTIE/TDEV offline analysis can be used to evaluate wander results measured and stored by the ANT-20 the results of which can be displayed graphically and compared with standardized masks.
All jitter and wander applications can be automated using the CATS Test
Sequencer as jitter tests are an important component of acceptance procedures.

The Jitter vs.Time display provides an excellent

overview of how the output jitter varies over time
Display of MTIE/TDEV results and comparisons against masks

10

A Pacesetter for the Future

Recent years have seen a dramatic increase in the trend towards global interconnection with the Internet fueling this growth. To meet new bandwidth
requirements, two technologies predominate: time division multiplexing (TDM)
of synchronous channels which is used to transmit higher bit rates, and dense
wavelength division multiplexing (DWDM) which makes use of the different
optical windows on a fiber. Both technologies are employed to optimize the use of
existing optical fiber capacity.

Network
node

STM-64

OC-192

STM-4

155 M

OC-3

STM-1

E-4

Test interfaces

140 M

52 M

OC-1

STM-0

45 M

DS3

34 M

E3

2M

E1

1.5 M

DS1

Signal structures

Pointer analysis and generation

OC-12

Overhead analysis and generation

622 M

Performance analysis

STM-16

ATM traffic analysis and generation (PVC and SVC QoS testing)

OC-48

Anomaly/Defect analysis and insertion

2,5 G

Jitter/Wander analysis and generation

ANT-20

Test tools

Even at 10 Gbps, ANT-20se can break down signal structures and analyze them down to the lowest levels

11

All statements, technical information and recommendations related to the products herein are based upon information believed to be reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no
responsibility is assumed for any inaccuracies. The user assumes all risks and liability whatsoever in connection with
the use of a product or its application. JDSU reserves the right to change at any time without notice the design,
specifications, function, fit or form of its products described herein, including withdrawal at any time of a product
offered for sale herein. JDSU makes no representations that the products herein are free from any intellectual
property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are trademarks of
JDS Uniphase Corporation. Other trademarks are the property of their respective holders. 2006 JDS Uniphase
Corporation. All rights reserved. 30137302 500 0106 ANT20.BR.OPT.TM.AE

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