Model: 218-1055-010
Telegraph-telephone Si ConverterSpecial Features:
Telephone line converter module provides the talk battery, ring generation and off hook detection necessary to operate a standard telephone; also provides the ring detection and line seizure needed when connecting to a pbx station or co trunk; on board is a 2-wire to 4-wire hybrid that separates the transmit and receive audio paths; the board also contains a pulse code modulator and demodulator which converts the audio signals into a serial bit stream; the use of compandors further refine the quality of the audio; the output is 4-wire 600 ohm audio or synchonous serial data via a rs-422 interface; an onboard clock generator is provided (selectable data rate from 28kbps to 256kbps) or the system will accept an external clock signal
Properties:
An electronic device which receives, converts and transmits ringing and/or supervisory or other messages over a communication circuit in the form of audio frequency tones. May include integral interrupters, oscillators and hybrid and filter networks. Excludes generator, ringing, static and generator, ringing, machine.
Part 218-1055-010 NSN 5805-01-418-1623
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 8543706000
- SITC: 77878
- End Use: Telecommunications equipment
- NAICS: 334210
- USDA: 1
Freight Class: Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks
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