TBTI on wires today.....
(COMTEX) B: Telebyte Introduces Low Cost Local Loop Simulator for DSL
B: Telebyte Introduces Low Cost Local Loop Simulator for DSL Testing
GREENLAWN, N.Y., Sep 28, 1999 (BUSINESS WIRE) --
New Model 454 Precisely Simulates Frequency Response for Local
Loop Lengths up to 18,500 Feet; Simplifies Testing of ASDL as
well as HDSL, T1 and E1 Modems
Telebyte Inc. (OTC BB: TBTI), a leading manufacturer of Digital
Subscriber Line (DSL) test equipment announced the introduction of the
Model 454 Local Loop Simulator. Model 454 is a compact laboratory
and/or production test unit that precisely simulates the frequency
response of the local loop used by telephone companies (Telcos). The
unit presents an accurate simulation of both the amplitude and
propagation delay characteristics of a single, 26 AWG (0.4mm) telephone
pair at frequencies extending from DC up to 1.5 MHz. This is precisely
the frequency range of interest for ADSL technology, used to provide
high speed Internet access over the local loop.
"This unit is a welcome solution to the problem of testing the wide
variety of Asymmetric Digital Subscriber Line (ADSL) modems that are
being manufactured to provide high speed Internet access at T1/E1
speeds," stated Telebyte President Michael Breneisen. "Model 454
delivers a low cost, a convenient form factor, and is extremely
accurate in simulating local loop characteristics. In addition to being
ideal for testing ADSL modems on the production line, it also offers
the ability to test modems using the more mature High data rate Digital
Subscriber Line (HDSL) technology, and T1 and E1 applications,"
furthered Breneisen. While well suited to the production line, Model
454 can be employed as an engineering tool in the developmental
laboratory as well, ensuring product design will live up to performance
expectations in the field.
Model 454 emulates local loops extending up to a maximum of 18,500
feet--a distance equivalent to the furthest subscriber connected to a
Telco central office. For enhanced flexibility, Model 454 is comprised
of separate sections that can individually simulate the characteristics
of cable lengths of 500 feet, 1,000 feet, 2,000 feet and 3,000 feet.
These sections can be connected in any combination to allow simulation
in 500-foot increments of any cable length up to 18,500 feet. Tandem
connection is accomplished by pressing front panel "push button"
switches. Additionally, by employing multiple Model 454s, ADSL modems
can be tested in configurations with bridge taps.
Model 454 is totally passive, requiring absolutely no AC power, making
it a very portable solution. This also translates to a long lifetime
and high reliability--features that are essential given the harsh
production environments in which the unit will typically be installed.
Model 454 is equipped with two bi-directional ports, supporting both
400 Volt levels and 120 mA DC current. Consequently, it is transparent
to Loop Current and Ringing voltage.
"Model 454 is very different from other line simulators in that it
allows for the testing of telecommunications equipment utilizing
frequencies well above the voice band," said Breneisen. We're excited
about this product because its broad frequency range and extended
distance simulation specifications are more than sufficient to cover
high speed technologies such as ASDL. Model 454 should be a very
attractive and cost efficient solution for our customers."
Model 454 Basic Specifications
Equivalent Wire AWG: 26 AWG PIC Cable at +70(degree) F
per AT&T reference publication 62310
Length Increments: Feet Kilometers
---- ----------
500 .15
1000 .30
2000 .60
3000 .90 (five sections)
Simulation Capability: 0 to 18.5Kft in 500' increments
ANSI T1.601 Loop No.7:(13,500 feet, 26 AWG)
Mid CSA Loop: (6000 feet, 26 AWG)
CSA Loop No.6: (9000 feet, 26 AWG)
Rated Frequency Ranges: DC to 1.5 MHz
Attenuation Accuracy: +/- 5% +/- 0.5dB
Maximum Operating Level: Maximum Peak Voltage 500V (DC + Peak AC)
Maximum Continuous Current of 120 mA DC
Size: 6.0"H x 12.7"W x 13.5"D
Weight: 12 lb.
Suggested List Price: $1595.00
Telebyte, Inc. is a leading manufacturer and reseller of data
communications equipment for fiber and copper networks headquartered in
Greenlawn, New York. Telebyte supports a wide range of communications
solutions and services including Internet and DSL Products, LAN
Tranceivers, Interface Converters, Short Haul Modems, Fiber Optic
Products, Test Equipment, Multiplexers and Lightning Protection.
Additional information on Telebyte Inc. can be found at
www.telebyteusa.com.
Copyright (C) 1999 Business Wire. All rights reserved.
Distributed via COMTEX.
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CONTACT: Telebyte, Inc.
Gail Nelson, 516/423-3232 ext 403
email: sales@telebyteusa.com
www.telebyteusa.com
WEB PAGE: businesswire.com
GEOGRAPHY: NEW YORK
INDUSTRY CODE: COMPUTERS/ELECTRONICS
COMED
INTERACTIVE/MULTIMEDIA/INTERNET
PHOTO:
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