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AI-7280
- Central Office Line Simulator
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The
AI-7280 is a highly flexible central office line simulator. It
is designed primarily for the testing and verification of
common terminal equipment, including standard telephones,
Caller ID devices, SMS (Short Message Service) capable
equipment, and any device using an analog Tip/Ring interface
circuit.
Supplied with the TRsSim
software for Windows, it can analyze a telephone's DTMF
characteristics, pulse dialing and flash timing, generate
various network tones and ringing patterns. Both Type I
(on-hook) and Type II (off-hook) Caller ID is supported using
either FSK or DTMF data transmission. As an
optional component, the TRsSim software can perform SMS
testing to either the ETSI protocol 1 or protocol 2 standards.
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Features | Applications | Details | Options
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Information
Features
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Send and
receive Bell 202 or V.23 FSK for SMS testing
applications |
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Type I (on-hook) & Type II
(off-hook) Caller ID Signal Generation (both FSK and
DTMF) |
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Programmable
line voltage and loop current telephone
interface |
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Programmable
line impedance and balance impedance. |
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Generates
network tones (up to four frequencies), DTMF, FSK, MF,
and AM signals |
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Generates
ringing with adjustable frequency, level, dc offset
voltage, phase, and wave shape |
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Measure
signal frequency, level, THD+N, DTMF level &
frequency |
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Various
selectable measurement filters, including low pass,
high pass, band pass, notch, C-message |
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Measure DC
line voltage and loop current |
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Programmable
noise, echo, OSI, and line reversal
impairments |
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External BNC
connectors for audio monitoring and loop-through |
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USB and
RS-232 interface to PC |
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Details
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The AI-7280
simulates a single central office analog telephone line. It is designed primarily for the testing and verification of common terminal equipment, including standard telephones, Caller ID devices, SMS (Short Message Service) capable equipment, and any device using an analog Tip/Ring interface circuit.
Supplying a standard RJ-11 telephone jack, the AI-7280 provides a programmable DC feeding circuit, operating in either a constant current or constant voltage mode. Both the line voltage and loop current are adjustable, including line polarity and slew rate control. An on-board ringing generator provides a range of programmable level, frequency, phase, and wave shape settings. All of the signal generation and analysis is performed by a programmable DSP, allowing for future firmware upgrades. The AI-7280 can generate up to four simultaneous tones including FSK (frequency shift keyed), AM (amplitude modulation), DTMF (dual tone multi-frequency), and MF (multi-frequency) signaling tones. In applications requiring signal analysis, the AI-7280 measures RMS level, DC
voltage, frequency, and THD+N (total harmonic distortion plus noise) with a wide selection of adjustable filters. In addition it detects DTMF digits and decodes Bell 202 or V.23 FSK signals for Caller ID and SMS applications.
Control of the AI-7280 is accomplished by the use of a PC. It supports both a full speed USB 2.0 interface and a
serial RS-232 communications port.
The supplied TRsSim application
software operates under the Windows OS (95, 98, 2000, XP) and provides a high level graphical user interface. In its base form the TRsSim software can generate various ringing patterns and network tones. Additionally, standard Telecordia, ETSI, and DTMF based Caller ID messages can be sent to a TE under test. Other features include level, frequency, THD+N, and sweep measurements. As an optional component, the TRsSim software supports SM-SC (short message service center) emulation to either the ETSI protocol 1 or protocol 2 standard.
For integration into custom
test systems or for custom applications, a Windows 95, 98SE, 2000,
or XP DLL is provided. It supports both a USB or RS-232 connection to the AI-7280, and can be accessed from virtually any Windows 32 bit development environment. This includes Visual C++, Visual Basic, Lab View, among others.
For more information on:
TRsSim Pstn Emulation Software
AI-7280 DLL Developers
Kit
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Related Products
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AI-80 Caller
ID Signal Generator
Stand alone Caller ID signal
generator designed for production environments. It is capable
of generating signals for all FSK and DTMF based Caller ID
standards. Includes general telephone signal analysis features
and a flexible programming language for sophisticated and
complex production testing sequences.
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