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Network Quality
Testing System (NQTS) is a test equipment for checking the quality
of service in telephone networks. This system can perform several
tests routinely over the network, analyse the results and prepare
ready to use reports. This system performs verious types of tests
by placing test calls onto the network exactly the same way as a
subscriber does and delivers reports which reflect the quality as
it is experienced actually by the subscribers.
This type of
automatic test system helps the admistration to:
• Conduct the tests routinely with NQTS to get appropriate
sample data and
receive the operators of routine tasks.
• Prepare varied types of reports as required by the adminstration.
• Eliminate human error and fatigue
• Automatically repeat tests for fault tracing and clearing
the faults
immediately.
• Generate results after taking a proper size of sample of
test data to reflect
the true picture of the system.
• Provide fast and reliable results for speedy fault detection
and rectification
and thus improve the performance.
• Reliably test the transmission quality of the transmission
links.
• Serve as a centralized maintenance tool enabling the administration
to
constantly obtain the grade of service offered to the subscribers.
• Specify the nature of repetitive faults encountered and aid
in localizing and
eliminating them.
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The
following activities can be performed on the NQTS :
• Development of Test programs (either automatic or manual)
• Transmit test programs to remote units
• lssue start/stop commands to remote units
• Collect test results of the performed test
• Prepare test reports
• Record the configuration details of network like the capacity
and type of
exchanges involved, the size and capacity of the transmission
links between
exchanges, the equipped capacity of the Interface circuits
etc. |
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SYSTEM REQUIREMENTS
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• PC AT/286 micro computer operating as a file server responsible
for
centralized data distribution and storage.
• PC AT/3 86, a workstation serving as user terminal .
• PC XT Data concentrator, an unmanned workstation, performing
the
communication tasks with all EMUs through Moderns.
• Modems, connected to the Data Concentrators. Modem is an interface
device
for transmission and reception of data through voice grade
switched telephone
network.
• A High Speed Printer, connected to the user terminal through
parallel port. It
is a 132 column Dot matrix printer. NOTE: Number of data concentrators
and
Modems vary with the size of the Network. For more details
about NQTC
configuration, refer Network Configuration Section. (Refer
to Technical manual
for maximum configuration. )
• UPS - Uninterrupted Power Supply, a backup power unit, which
supplies
uninterrupted power when the commercial power goes down. The
whole NQTC
is powered through UPS system. |
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