The flexible, high performance test platform
Acterna ANT-20 Advanced Network Tester – SONET/SDH
2
Equipped to meet the challenges of advanced network testing
A comprehensive platform for monitoring all networktest points
STM-64
OC-48
MUX
STM-1
ATM
STM-4c
2, 8, 34, 140 M
STM-1
STM-1, 4, 16
SDH
DWDM
SONET
STM-16c
STM-16
STM-16
OC-12
OC-3
ISP
45 M
1,5 M
ATM
ATM
network
DXC
ADM ADM
ADM
ADM
MUX
MUX
ADM ADM
ADM
ADM
In the fiercely competitive telecommunications arena, technological and
economic excellence is crucial to commercial success. Acterna, with itsfirm
commitment to sustainedleadership
in all aspects of the communications
network life cycle, is dedicated to
helping customers rise to the market’s
challenges in order to ensure economic
value in their businesses.
– DeliversSONET and SDH testing from
1.5 Mbps to 10 Gbps and DSn, ATM
and PDH testing
–Providesjitter/wander measurements
up toOC-192/STM-64
With technologies developing rapidly
the Acterna 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 itpossible
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.
3
Ease of use within a familiar work environment
Acterna 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 listof
error values, or graphically asa histogram. The zoom function isuseful 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 issaved with
100 ms resolution.
Familiar environment
The ANT-20’sbuilt-in PC withits Windowsbased 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 onany standardprinter.
PC softwaresuch as Micro soft Excel
™
or
Word
™
can alsobe used for documentation purposes. The ANT-20’s built-in
help functions are easily accessible,
delivering answers and technical
information directly to the user.
Large color touchscreen
The large color touchscreen isidealfor
field use and gives a structured overview
of alltest results thushelping 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 ke ys
Instant access keys enable direct and
speedy launch of the ANT-20 with the
user’s 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 ofthe 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 canbelinked to anumber of
functions and options including stored
settings for the ANT-20 or CATS Test
Sequencer, the user manual – stored in
PDF format– or other frequentlyneeded
documents. The ANT-20 is able to perform measurements using predefined
settings at the touch of a button.
Acterna ANT-20
Compact for field work
Free slot for OC-48/STM-16 or jitter up
to 622 Mbps. SONETand SDH mappings,
even in combination with ATM realtime
analysis work on SONET/SDH/DSn
interfaces from 1.5 Mbps to 2.5 Gbps.
Acterna ANT-20se
More in a portable unit
TheANT-20seisa four-slot solution that
offers greater functionality than the
ANT-20 andis 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.
Acterna ANT-10G
Equipped for future developments
With its OC-192/STM-64 optical interface, ANT-10G extendsthe 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 Gbpsispossible and all standardizedmappings arecovered. Thesolution
also offers an integrated state-of-theart jitter and wander test module.
4
Modular design allows user customization
SONET OC-192/SDH STM-64
Electrical and optical
interfaces for 9.953 Mbps
and integrated jitter/wander
generation and analysis as
per ITU-T O.171 and O.172
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 up to
OC-12/STM-4
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
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 switchedand permanent virtual
connections (SVC)
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
DSn/SONET up to OC-12
and PDH/SDH up to STM-4
Electrical and optical
interfaces for both
SONET/DSn and SDH/PDH
(fixed module, various
configurations possible)
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Sample results from a switchovertime
measurement
Testexecutions and results analysis for SONET and SDH
Innovative functions offer ideal support
The ANT-20 contains everything needed
for networkoptimization andcan beused
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 forIP and
ATM.Theprevious limitofapproximately
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 fullfeatured concatenation tester.
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Check and optimization ofqualityof
service (QoS) in ATM networks
The ANT-20 effectively tests ATM
networksand/or networkelements (NE)
forcorrect operationand 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
– Testingofall trafficcontract parameters
– ATM terminal simulation for
dial-up circuits
– Graphicalevaluationusing load charts
Save time and avoid errors with
automatic test functions
To assist technicianswith 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 Searches for signal and
unknown content
SCAN Tests for error-free connection
of all SONET channels
Trouble SCAN Checks all incoming SONET
channels for errors/alarms
Search Searches for test channels in
SONET signals
Auto SCAN Analyzes the structure of an
SONET signal up to OC-192
TroubleScan
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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 Acterna CATSTest
Sequencer can therefore be operated
remotely allowing complicated, timeconsuming tests to be conducted
easily from the office or home.
Remote operation of the ANT-20
Time saving applications include:
– Operation of several ANT-20s from a
central office; idealfor point-to-point
measurements for example
– Assistance with on-site test problems
A specialist in the main office can
monitor the ANT-20’s userinterface
and advise the local operator on how
to solve the problem(s)
– Perform interactive measurements or
test sequences
– An external testpoint scanner is used
to switch between prepared test
points from any location at any time
Remotely operated
ANT-20
Remote operation
PC
PC or workstation
PSTN or LAN
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Save time and money through
automation
The Acterna CATS* TestSequencer – a
test-automation software package that
runs on the ANT-20’s built-in PC – is the
ideal tool for automating repetitive test
procedures. Itprovides support inhandling standard tests, enabling users with
little or no programming background to
create test sequences for their own
specific needs. A number ofpredefined,
user-modifiable test steps are provided
for immediate use. Testautomation is
particularly important when commissioning NEs and/or lines. The various
measurements can be performed in
sequence and documented.
The ANT-20 CATS Test Sequencer is an
effective tool for acceptance measurements as well as the developmentand
production of NEs.
Once created, a test sequence can be
recalled at any time. Each run of a
sequence generates a file with all result
data and a clear PASS/FAIL for each test
step and the overall sequence.
Sample test sequence for commissioning 2 Mbps leased lines
Basic settings TX 2 Mbps Set TX signal structure
RX 2 Mbps Set RX signal structure
Test of parameters View alarm Check for no alarms
Continuity check BERT in channel
Pulling range Check pulling range (offset)
Check LOS Set LOS, wait for AIS
Jitter measurement Measure intrinsic jitter
Jitter tolerance Measure jitter tolerance
Delay measurement Measure signal delay
G.826 Analysis (for SONET) G.826 Analysis, 24 h
Test end Thank you End of test
Automated test sequences with reproducible results
*
CATS CVI application testsequencer
Start
Pass
Setup
ANT-20
Error
Test
Sensor
Test
Test
Report
Jitter
Test
Execution of a typical testsequence
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Tight standards for synchronization
Higher bit rates, combined with synchronous technology demand greater
clock qualitywithin 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-peakjitter, RMS jitter, and
jitter vs. time
– Wander generation and analysis
– Maximum time interval error and time
deviation (MTIE/TDEV) offlineanalysis
– 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.
A reliable solution for jitter and wander
The Jitter vs. Time display providesan excellent
overview of how the output jittervaries over time
Display of MTIE/TDEV resultsand comparisons against masks
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A pacesetter for the future
Recent years have seen a dramatic
increase inthe trend towardsglobal interconnection with the Internet fueling this
growth. To meetnew 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) whichmakesuse of thedifferent
optical windows on a fiber. Both technologies are employed to optimize the
use ofexisting opticalfiber capacity.
Test interfaces
2,5 G
622 M
155 M
140 M
52 M
45 M
34 M
2 M
1.5 M
Signal structures
ANT-20
STM-16
STM-4
STM-1
E-4
STM-0
OC-48
OC-12
OC-3
OC-1
OC-192
STM-64
Jitter/Wander analysis and generation
Performance analysis
ATM traffic analysis and generation (PVC and SVC QoS testing)
Overhead analysis and generation
Pointer analysis and generation
Test tools
Anomaly/Defect analysis and insertion
Network
node
DS3
E3
E1
DS1
Even at 10 Gbps, ANT-20se can break down signal structuresand analyze them down to the
lowest levels
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Notes
Worldwide
Headquarters
12410 Milestone Center Dr.
Germantown, Maryland
20876-7100
USA
Acterna is present in more
than 80 countries. To find
your local sales office goto:
www.acterna.com
Regional Sales
Headquarters
North America
12410 Milestone Center Dr.
Germantown, Maryland
20876-7100
USA
Toll Free: 1 866 ACTERNA
Toll Free: 1 866228 3762
Tel: +13013531560 x2850
Fax: +1301353 9216
Latin America
Av. Eng.Luis Carlos Berrini
936/8° e 9° andares
04571-000 São Paulo
SP-Brazil
Tel: +55 11 5503 3800
Fax:+55 11 5505 1598
Asia Pacific
42 Clarendon Street
PO Box 141
South Melbourne
Victoria 3205
Australia
Tel: +61 3 9690 6700
Fax:+61 3 9690 6750
Western Europe
Arbachtalstrasse 6
72800 Eningen u.A.
Germany
Tel: +49 7121 86 2222
Fax:+49 7121 86 1222
Eastern Europe,
Middle East & Africa
Elisabethstrasse 36
2500 Baden
Austria
Tel: +43 2252 85 521 0
Fax:+43 2252 80 727
1st Neopalimovskiy Per.
15/7 (4th floor)
RF 119121 Moscow
Russia
Tel: +7 095 248 2508
Fax:+7 095 248 4189
© Copyright 2002
Acterna, LLC.
All rights reserved.
Acterna, The Keepers of
Communications, and
its logo are trademarks
of Acterna, LLC. All
other trademarks and
registered trademarks
aretheproperty of their
respective owners. Major
Acterna operations sites
are IS0 9001 registered.
Note: Specifications,
terms and conditions
are subject to change
without notice.
ANT20/BR/OPT/07-02/AE/ACT00416
Acterna AdvantageSM– addingvaluewithglobal services andsolutions
From basic instrument support for your field technicians to management of complex,
company-wide initiatives, Acterna’s service professionalsare committed to helping you
maximize your return on investment. Whatever your needs – product support, system
management, education services, or business planning and consulting – we offer programs
that will give you the competitive edge. This is the foundation ofActerna Advantage.
Acterna is the world’s largest provider of test and management solutions for optical
transport, access and cable networks, and the second largest communications test
company overall. Focused entirely on providing equipment, software, systems and services,
Acterna helps customers develop, install, manufacture and maintain optical transport,
access, cable, data/IP and wireless networks.
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