Complimentary Reference Material

Complimentary Reference Material
Complimentary Reference Material
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Form 080/01
WWG IBT-10/-10U
ISDN BRA S/T/U Tester
For testing Basic
Rate Accesses:
• Tests all the interfaces
of an ISDN Basic
Rate Access
• Full and fast
commissioning
of ISDN accesses
using automatic
testing functions
• Fully configurable so
that only wanted tests
are carried out
IMK-31 package
Applications
• Installation and commissioning of
ISDN Basic Rate Accesses
• Maintenance of ISDN BRA
• Installation, maintenance of PBXs
• Installation and maintenance of PBX
private networks
• Monitoring and optimization of ISDN
networks
During installation of basic rate accesses,
a number of tests have to be carried out to
check access to the ISDN network, the
availability of basic services and subsequent
transmission quality.
When commissioning basic rate
accesses, operators and end users need
a quick, easy means of defining the X.25
service or supplementary services provided.
When installing a PBX, the basic services
must be tested to check that the PBX was
configured correctly prior to connection to
the network.
Maintaining ISDN equipment or basic
accesses requires an analyzer that can
perform detailed decoding of the D-channel
protocol in high-impedance mode. It is
useful to perform exhaustive decoding and
archive the test results, thus keeping track
of detected problems.
For private PBX networks, it is also
essential to test the private links used for
interconnection.
Functions
• Terminal and Network simulation
• Test of services and BER Test (G.821)
• Automatic and functional test of all
ETSI supplementary services
• Test of X.25 in the D and B channels
• Master and Slave simulations on
private PBX networks
• Integrated protocol analysis function
• Real-time protocol analysis on PC
• Protocol analysis at the U interface
• PC-based expert system to help with
troubleshooting and proactive
maintenance
The basic version incorporates all the
essential tests, such as BERT (bit error rate
tests), test of services and of all ETSI
supplementary services in automatic or
functional mode. It also offers X.25 in the
B and D-channels testing (as per ITU-T X.31)
and an integrated tracer mode.
There are easily downloaded software
options that:
• provide extremely powerful protocol
analysis in high-impedance mode, with
the option of detailed analysis on a PC,
either in real time or at a later date,
• support the private protocols used in PBX
networks,
• provide an expert system for ISDN.
• Long battery autonomy
allows the tester/
analyzer to be used all
day in the field
• Updates by software
download
TE (Terminal) Simulation mode
This mode is used to replace a terminal and then to make two
calls (simultaneously), measure the bit error rate (BER) and test
the services and supplementary services. The WWG IBT-10
generates DTMF (touch tones 0 to 9, * and #) and allows access
to Keypad facilities, both while a call is established and during
the call.
NT (Network) Simulation mode
The NT simulation is used to simulate an ISDN network at the
S/T interface prior to connecting the terminal to the network.
This operating mode enables the user to use the tests and
functions available in TE mode (call, automatic testing of
services and teleservices, BER test, loopbox, etc.).
IBT-5
S0 /T0
U
NT1
S0
ISDN
T0
S0
IBT-10
Bit error rate test (G.821)
The WWG IBT-10 tests the quality of transmission at an ISDN
access in self-call mode or through end-to-end measurements.
B1
S0 /T0
U
NT1
IBT-10
Self-call mode
B2
Bit errors can be inserted manually or automatically and the
level of quality displayed at any time during the test.
S0 /T0
NT1
U
U
NT1
S0 /T0
IBT-10
IBT-10
BERT mode
U interface
If the network termination is not present or is faulty, the
integrated U interface (only available with the WWG IBT-10U) can
be used to carry out all the tests needed to define the access by
simulating the combination of an ISDN terminal (U/TE mode) or
X.25 (U/X25D or U/X25B mode) and a network termination.
Test of supplementary services
The WWG IBT-10 very simply lets users perform a functional or
automatic test to check for the presence of all the
supplementary services on the access being tested. In automatic
mode, the WWG IBT-10 results indicate availability,
non-availability or the causes of error for each of the tested
supplementary services.
See Pocket Guide No. 1, "ISDN Supplementary Services".
IBT-10
B1 or B2
Test of services and teleservices
The WWG IBT-10 tests the availability of the various services
offered with ISDN: Bearer Capability, services and teleservices.
A special mode allows the services associated with the protocol
used to be tested automatically.
EDSS-1
Speech BC
Audio 3.1 kHz
Data 64 BC
Data 56 BC
Speech
Fax G3
Fax G4
Teletext
Videotext
...
Network Simulation mode (NT)
Loopbox mode
End-to-end measurement
IBT-10
IBT-10
PBX
Terminal Simulation mode (TE)
S0 /T0
NT1
U
ISDN
Test of services
Dual Call function
The Dual Call function is used to generate two calls. Once the
two calls have been set up, one channel can be used to test the
bit error rate, while the other channel remains open for a call.
The WWG IBT-10 automatically receives two calls.
CLIP
CLIR
COLP
COLR
SUB
AOC
TP
HOLD
CFU
CFB
CFNR
CUG
UUS
MSN
DDI
S0 /T0
NT1
U
ISDN
Test of supplementary services
Test of X.25 in the D and B channels
The WWG IBT-10 tests the accessibility and performance of the
X.25 service in the B and D channels (as per X.31, case A and B).
The WWG IBT-10 establishes an X.25 link (by self-call or via a
loopbox) and analyses the reception quality of one or more
previously transmitted data packet(s) (packet generator). The
test can be configured as required. This facility, combined with
the detailed X.25 statistics (transmission/reception) for layer 2
(number of frames transmitted / rejected) and layer 3 (number of
packets transmitted/received, speed), means that the entire X.25
service can be tested.
Availability of service
Integrity of
transmission
S0 /T0
IBT-10
NT1
ISDN
U
D or B
X.25
Integrated protocol analysis function
The WWG IBT-10 can be used to analyze the signaling on the
D channel in high-impedance mode, making it an essential tool
for maintenance purposes. The plain-text displays and filter
functions greatly speed up the diagnosis.
A network termination 'swap-out' function (U/Smoni mode, only
available with the WWG IBT-10U) is used to track down which
part of the network, terminal or NT1 has caused the fault.
Private protocols
The WWG IBT-10 supports the CorNet-N®, CorNet-NQ®
(registered trademark of Siemens AG Munich/Berlin) and Q.SIG
private protocols, and can thus be connected to private PBX
networks in place of a PBX. This operating mode enables the
user to use the tests and functions available in TE mode (call,
automatic testing of services and teleservices, BER Test,
loopbox, etc.) and the special features of this type of network:
clock synchronization function and Master/Slave mode.
Expert System: WWG ISDNpartner
Real-time protocol analysis on PC
For particularly tricky maintenance problems, the WWG IBT-10
can be combined with the WindowsTM -based analysis software.
This greatly increases the available diagnostic options by
performing exhaustive decoding of the D-channel protocol. The
data can also be stored on a PC in real time, allowing more
in-depth analysis to be performed, which is particularly
important when investigating random problems.
The first generation of ISDN testers (which were designed for
installing ISDN accesses) only provided basic simulation
functions, which meant that the access had to be checked by an
engineer. The second generation (designed for maintenance
purposes) also integrated protocol analysis functions, again
intended for use by specialists.
Now WWG ISDNpartner can be combined with the
WWG IBT-10/-10U (any configuration) to create a third
generation of testers, offering all users access to sophisticated
troubleshooting and network monitoring functions.
IBT-10
S0 /T0
BRA
Monitor
ISDN
NT1
PC-based real-time analysis of the D channel
Protocol analysis at the U interface
All the signaling on the D channel can be analyzed by
connecting the WWG IBT-10 to the U interface - so it is not
always necessary to travel to the customer's premises.
See also the WWG IUM-10 datasheet and Application Note 63.
Protocol analysis at the U interface in the case of NT1s providing
analog accesses
Today, ISDN systems appear to be rolled out ever faster, and
there is just not enough time for installation and maintenance
teams to be trained properly. Applications that use ISDN are
also becoming increasingly complex, which means that a
specialist almost inevitably has to be called out when a problem
is detected on a line.
The WWG ISDNpartner expert system is the ideal tool for
tackling this situation.
WWG ISDNpartner is an expert system that meets the needs of
everyone involved in ISDN network and equipment maintenance
- whatever their level of skill and experience. It also provides a
complete overview of the network, making it much easier to
prevent problems occurring in the first place (occurrence of
transmission errors or failed connections over time, etc.), to
optimize performance and control communications costs.
All the information is clearly written in language that can be
understood by non-specialists.
With WWG ISDNpartner, users of Wavetek Wandel Goltermann's
ISDN testers/analyzers (IBT, DA-5, DominoWAN ISDN, etc.) can
benefit today from the diagnostic techniques of tomorrow - at a
surprisingly low cost.
WWG ISDNpartner
Troubleshooting
Approach the problem from the right end!
Protocol Analysis for ISDN faults should only be used as a last
resort (in fewer than 20% of cases), and then only if the initial
usage checks identify that the problem is effectively located at
the protocol level. A lot of time can be wasted if this basic
principle is ignored and, worse still, the problem often remains
unsolved. Lack of understanding and practical experience often
causes non-experts to skip various steps and rush headlong into
using an analyzer, wrongly thinking that it will work miracles.
Wavetek Wandel Goltermann has created WWG ISDNpartner to
help such non-specialists. It is an expert system that guides the
user through the various troubleshooting phases, using exactly
the same methodology as the best human experts. By carrying
out analyses with WWG ISDNpartner, the user will gradually learn
the necessary methods and knowledge, eventually becoming an
expert in his or her own right, able to solve any type of problem
in the minimum time.
Step one: Describing the problem with 'Expert Interview'
Expert Interview prompts the user to describe the problem
by asking a series of questions in a language that can be
understood by non-specialists. During the interview,
WWG ISDNpartner suggests a number of checks to be carried
out to discover the true nature of the problem. This first step
may lead to a solution (i.e. suggested corrective action).
Otherwise it will trigger an expert analysis, which is the second
step of the process.
Configuring the Expert Analysis
Configuration of the analysis is made extremely simple by the
interactive and contextual dialog or 'Wizard'. This enables the
user to select the source of the analysis (analyzer or file), set
capture filters, if necessary, and specify information such as the
user's name or the address of the site, which will be needed if
the session is subsequently to be archived.
Configuration made
easy with 'Wizard'
Results Journal
Throughout the analysis, any events that are detected are
classified by severity level in a 'Results journal'. This means that
the user no longer has to wade through hundreds of frames all
the relevant information is now kept centrally.
Clicking on an event calls up an additional level of detail:
• Statistics on the connection or equipment relating to
that event,
• Dynamic expert help providing a complete diagnosis of the
origin of the problem and suggesting a list of
corrective actions,
• Decoding of the frames that caused the event.
Expert Interview in HTML page format
Expert Interview is also particularly useful as a decision-making
tool for the hot-line support teams of network operators,
equipment manufacturers or other service providers. It helps
them to carry out first-level remote diagnosis and to choose the
appropriate actions, e.g. whether to opt for remote
maintenance or send an engineer to work on site.
Step two: Expert Analysis
The Expert Analysis takes place at the end of the interview,
although it can also be started independently. During this
analysis, WWG ISDNpartner searches for the signature of the
major symptoms and reportable events inside the frames
captured in real time or stored in a file.
The problem database that WWG ISDNpartner uses to carry out
this investigation is the fruit of close collaboration with a
number of ISDN experts. From this database, the software can
diagnose most of the problems likely to occur in the field. This
means that the expertise is not simply limited to testing whether
the frame's content conforms to the standards.
Results journal for storing events centrally
Step three: Protocol Analysis
Given the complexity and diversity of ISDN, there are some
faults that cannot be detected automatically. As the final level of
support, WWG ISDNpartner performs exhaustive decoding of the
frames, enabling a user who is familiar with ISDN signaling to
solve even the most complex problems.
In such cases, WWG ISDNpartner has invaluable advantages over
traditional packages:
• Option of saving all the information in a database, making it
much easier for a more experienced colleague to
subsequently analyze the data,
• Sophisticated mechanism for navigating through the trace,
greatly increasing the effectiveness of expert users.
Sophisticated navigation through the trace
A connections log enables the frames relating to each call to be
examined with a single mouse click. The user can also sort or
filter these connections by a range of criteria, such as address,
service or supplementary service used, status, start time, cost
and duration, etc. This correlation between connection and
trace, combined with the automatic filtering and sorting options,
saves precious time, particularly with long traces or when
analyzing on an ISDN primary rate access subject to
heavy traffic.
Complete overview
of the network
Flexible and future-proof software
Navigating through the trace using the connections log
Network monitoring
Configuration of events and detection thresholds
WWG ISDNpartner enables the most demanding users to change
the parameters of detected events in order to:
• adapt the expert system's behavior to the characteristics of
the network (by tuning thresholds),
• place the emphasis on detecting specific faults (by modifying
the severity level of certain events),
• provide a wider range of diagnoses and suggested solutions,
• trigger specific actions when certain events occur by starting
an application, recording the event, stopping the analysis, etc.
From the many logs, statistics and graphs, WWG ISDNpartner is
able to provide an overall network picture. This is particularly
suitable for proactive maintenance, optimizing performance and
controlling telecommunications costs.
Proactive maintenance
Some problems can have disastrous consequences for a
company, even if their symptoms are not immediately perceived
by end-users. One typical example is the router that
continuously establishes connections or keeps connections
open permanently. WWG ISDNpartner is able to investigate such
symptoms automatically and on an on-going basis, effectively
preventing the faults from occurring in the first place.
The user can also program an application to be started when
certain critical events occur, such as an email system designed
to notify abnormal situations in real time.
Graphs showing the occurrence of transmission errors or failed
connections over time are another highly effective tool for
anticipating significant drops in service levels.
Optimizing performance
To optimize network performance, the user must be able to
monitor B-channel usage, setup and release delays and error
rates, etc. Summaries of all this information are available in both
text and graph formats.
Optimizing telecommunications costs
Optimizing telecommunications costs requires control over
connection times, durations and costs, destinations, etc.
With its logs and statistics and a whole range of events
dedicated to controlling connections, WWG ISDNpartner is
the ideal tool for any company that wishes to minimize
its telecommunications bills.
Programming events and thresholds
Enhancing the Interview
The user can edit the Interview HTML pages as required,
or add new dialogs in order to incorporate his own experience
and analysis methods.
Programming the user interface
The logs can also be customized (choice and order of the
various fields). This enables the user to design dashboards
to suit the task at hand, a process made much easier by the
predefined profiles: troubleshooting, performance
optimizing, etc.
Data library and dedicated website
WWG ISDNpartner's Web interface enables the user - without
exiting the software - to navigate through the technical
data library on the installation CD-ROM and on the
WWG ISDNpartner Internet site:
http://isdnpartner-online.wwgsolutions.com
On the website, the user can send messages (wish-list of
features, new events) and download software updates free of
charge (apart from major new functionalities).
Technical Specifications
WWG IBT-10/-10U
S0 /T0 (2B+D) Basic Rate Access
Electrical characteristics .......to ITU-T Rec. I.430,
........................................................ ETS 300 012
Connectors ............................... TAE 8+4, RJ-45
Mode ............................ high impedance, 100 W
Protocols .......... EDSS-1, Q.931, VN3/VN4/VN6,
....... 1TR67, TPH 1962*, TN1R6, CorNet-T/TS®*,
......... ATT*, N-ISDN*, NTT*, DMS-100 (Funct)*,
SwissNet 2*, EDSS-CH (SwissNet 3),Telenokia,
.......... 1TR6, Televerket, Q.SIG, CorNet-N/-NQ®
® Registered
trademark, Siemens AG Munich/Berlin
* TE Simulation mode only
U interface
Connector ................................................. RJ-11
Layer 1 specifications .. to ANSI, ITU-T and ETSI
Line code ......................................... 4B3T, 2B1Q
Supply voltage test by LED
Serial interface .................................... mini-DIN
Handset interface ...................................... RJ-9
Screen display .............. 8 lines x 21 characters
Keypad .................................................. 24 keys
PC upload / download
Test functions
Telephone Function (TE and NT Simulation)
Selection ......... address, sub-address, channel,
........................ service, self-call, loop command
Memory .......................... 10 telephone numbers
Recall feature
ISDN multiple calls
Callback function
Automatic call acceptance ....................... 2 calls
DTMF generation .............................. 0 to 9, *, #
Bit error rate test (BERT) in TE, NT
Simulation and high-impedance modes
(ITU-T Blue Book)
Test sequences for measuring the bit error rate
Pseudo-random bit sequences .......... 24-1, 26-1,
............ 29-1, 211-1, 215-1 (inverted, non-inverted)
Programmable 16-bit word
Measurement time ....................... 1 min, 15 min,
........................................ programmable, infinite
Measurement ..... conforms to ITU-T Rec. O.152
G.821 evaluation ........... ES, SES, EFS, US, DM
Error insertion ........................................ manual,
.................... automatic (10 -6, 10 -5, 10 -4, 10 -3, 10 -2 )
No protocol measurement
(leased lines)........................................ B1, B2, D
Test of all ETSI supplementary services
Functional test and availability test (automatic).
Western Europe
Transport
Carrying bag for the WWG IBT-10 and its
accessories (handset, battery charger,
download and measuring cables and
documentation)
General specifications
Power supply ............ NiCd cells or dry batteries
Operating time from NiCd cells
at the S/T interface in TE and monitoring
modes ............................................ > 24 hours
at the S/T interface in NT mode
................................................. approx. 10 hours
at the U interface .............................. > 6 hours
Power supply from charger (LNT-1x) ............ yes
Power supply from AC line (SNT-71) ............ yes
Battery charging time ............................. 9 hours
Permitted ambient temperature
Operational range ........................... 0 to +50 oC
Maximum operational range ........ -10 to +55 oC
Storage and transport range ........ -40 to +70 oC
Dimensions (w x h x d) in mm .....105 x 60 x 200
Weight of the basic instrument ...... approx. 1 kg
Test of services
Bearer Capability
HLC/LLC (high-layer / low-layer compatibility)
Built-in and/or user-defined
All types of Bearer Capability and teleservices
Test of X.25 in the D and B channels
(as per Rec. X.31, case A and B)
X.25 call set-up (SAPI = 16)
Verification of transmission integrity
Transmission: lost packets, errors
Layer 2 and 3 statistics
Protocol analysis, tracer for TE, NT Simulation
and X.25
Analysis: layers 1, 2 and 3
Indication of transmission direction
Filtering... layer, SAPI, TEI, CR, frame length, RR
Storage of results
Storage capacity .......................... up to 100 files
Capacity .................................................. 380 kB
Windows™ PC Detailed Decoder software
Detailed decoding of trace and monitoring files.
Test results can be downloaded to a PC.
PC-based real-time analysis of the D channel
PC-based detailed decoding in real time of
signaling in the D channel.
Ordering Information
Basic instrument:
WWG IBT-10 ................................. BN 7510/40
WWG IBT-10U (2B1Q) ................. BN 7530/40
WWG IBT-10U (4B3T) .................. BN 7532/40
Includes NiCd cells, carrying bag and all
accessories (handset, cables, documentation, etc.)
Software options to add new functions to your
instrument.
Expert System package .......... BN 7510/92.21
Includes the PC-based Expert System for the
WWG IBT-10/-10U and WWG ISDNpartner.
Wavetek
Wandel
Goltermann
Worldwide
Complete packages:
WWG IBT-10 .................................. BN 7510/41
WWG IBT-10U (2B1Q) .................. BN 7530/41
WWG IBT-10U (4B3T) ................... BN 7532/41
Includes the basic instrument and all the
software options, apart from WWG ISDNpartner.
Menu available in the following languages:
English, French, German, Spanish, Italian and Dutch.
WWG ISDNpartner software ........ BN 7519/10
© 2000 Wavetek Wandel Goltermann, Inc. • Specifications subject to change without notice • LL/RN/DS01/0200/AE
Windows is a trademark of Microsoft Corporation.
ISO 9001
Certificate No 20462
Wandel & Goltermann CTS
Arbachtalstrasse 6
D-72800 Eningen u.A.
Germany
Tel + 49 7121 86 2222
Fax + 49 7121 86 1222
Eastern Europe/
Middle East/Africa
Postfach 13
Elisabethstrasse 36
A-2500 Baden
Austria
Tel + 43 22 52 85 521 0
Fax +43 22 52 80 727
CIS
1st Neopalimovskiy per.
15/7 (4th floor)
119121 Moscow
Russia
Tel +7 095 248 2508
Fax +7 095 248 4189
North America
P.O. Box 13585
1030 Swabia Court
Research Triangle Park
NC 27709-3585
USA
Tel +1 919 941 5730
Fax +1 919 941 5751
Latin America
Av. Eng. Luis Carlos Berrini
936-8/9 Andar
04571-000 Sao Paulo, SP
Brazil
Tel +55 11 5503 3800
Fax +55 11 5505 1598
Asia-Pacific
P.O. Box 141
South Melbourne,
Victoria 3205
Australia
Tel + 61 39 690 6700
Fax +61 39 690 6750
Internet address
http://isdn.wwgsolutions.com
E-mail
[email protected]
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