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AI-240
- CAS Detector Testing System
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Automated and programmable test system
for evaluating the CAS (CPE Alerting Signal)
detector used with Type II (off-hook) Caller ID
signaling. Conforms to the industry standard
Telecordia (Bellcore) SR-TSV-002476 document for
performing talk-down, talk-off, and signal
recognition testing. The AI-240 combines many of
the keys elements required in a single product.
This includes an ITU P.56 ASL (Active Speech
Level) meter, parametric voice band equalizer,
CAS/SAS tone generator, and data logger. |
Features | Applications
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Additional Information
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Information
NOTE: This product is nearing an end of life status; it may still be ordered but continued supply of the product cannot be guaranteed. The product will still continue to be supported for calibration, repair, and customer support questions. A table of discontinued products and replacements may be found at:
End
of Life Product Notifications
Applications
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Compliance testing of Caller ID devices
to the Telecordia (Bellcore) SR-TSV-002476
standard |
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Details
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The AI-240 consists of an ISA PC plug-in
card and the CAS2200 software package. The
plug-in card, called a Telephone Signal
Processing Card (TSPC), performs emulation of a
single telephone line with DSP based signal
generation and analysis capabilities. The CAS2200
program, operating under Windows 95/98/NT/2000, provides
the high level user interface. Unlike the
AI-150, which is designed for general Caller ID
testing, the AI-240 focuses solely on testing the
CAS detector that is present in all Type II
(off-hook) Caller ID capable devices. The
performance of the CAS detector is both critical
to the operation of Caller ID devices, and
unfortunately not trivial to determine. An
improperly functioning CAS detector can miss Type
II Caller ID transmissions, or perhaps more
importantly, interrupt conversions on a seemingly
random basis. Telecordia (formerly Bellcore) has
published a testing plan (SR-TSV-002476 ) for the
evaluation of CAS tone detectors. The AI-240
combines the key elements required for the
testing procedure in a single package. For
certain test conditions, the AI-240 and the
speech source material are the only equipment
items required. These conditions are:
- Testing Caller ID devices where the CAS
tone is sensed directly from the tip and
ring leads (required for TIA MEI compliance).
- Testing CAS detector circuits and
IC’s where single ended signals are
utilized instead of a tip and ring
interface.
When testing Caller ID telephones that sense
the CAS tone from the receive signal port of the
hybrid, additional equipment is required. This
includes:
- Line length segments according to
Telecordia (Bellcore) SR-3004.
- Acoustic interface to telephone with
artificial mouth equalizer.
- Differential to single ended amplifier.
For the talk-down and talk-off testing, 96 hours
of standard speech material, in audio CD format,
is available from Telecordia. The CAS2200
software has the ability to control SONY
multi-disk CD changer, via an optional SONY CAV-2
product. This helps to automate the entire
testing sequence, by starting and stopping the CD
player via the CAS2200 scripting language.
For more information on: CAS2200 software
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Options
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Additional One Year Warranty:
AI-K001
Increases the parts and labor warranty period
from the standard one year to a total of two
years from date of purchase.
Additional Three Warranty: AI-K003
Increases the parts and labor warranty period
from the standard one year to a total of four
years from date of purchase.
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Related Products
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AI-150 Caller ID
Signal Simulator
Full featured PC based
Caller ID Signal Simulator. Generates FSK and
DTMF signals for both Type I (on-hook) and Type
II (off-hook) Caller ID. Software support for all
major international standards such as Telecordia
(Bellcore), TIA, ETSI, BT, CCA, NTT. Windows
based graphical user interface combines ease of
use with a large degree of flexibility. Automated
testing to various standards is supported with a
built in scripting language.
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