2 telephone connections for PLAR Can work with Loop's QFXS, which
supports the PLAR function. A-law or -law coding CAS Signaling convention Single LED for status Intended for use with 110-220Vac, 24Vdc, or
-48Vdc powered main units.
Description
Loop Telecom's PLAR plug-in card is an Electronic Order Wire (EOW) device is designed for the Loop-V4200 9port and 28-port devices. It allows two Private Line Automatic Ringdown interfaces to be multiplexed to 64 Kbps DS0 signals.
PLAR Coding can be selected as either A-law or -law. This unit can be used on systems running any power supply: 110-220Vac, 24Vdc, -48Vdc.
Ordering Information
PLAR voice card
Connector PLAR: 1 or 2 PLAR per connector PLAR Signaling Bits Power 110-220Vac, 24Vdc, or /48Vdc Alarm Conditioning CGA busy after 2.5 seconds of LOS, LOF Encoding A-law or -law, user selectable together for all Impedance Balanced 600Longitudinal Rejection 55 dB Longitudinal Max 2.5 volts peak AC Loss Adjustment 0, 3, or 6dB transmit & receive
| PLAR | |||||||
|---|---|---|---|---|---|---|---|
| Tx | Rx | ||||||
| A-bit | B-bit | A-bit | B-bit | ||||
| (IDLE) ON HOOK | 0 | 1 | |||||
| (SEIZE)OFF HOOK | 1 | 1 | |||||
| NO RING | 0 | * | |||||
| RING | 1 | * | |||||
Signal/Distortion > 46dB with 1004 Hz, 0dBm input NOTE: * = Don't care. Frequency Response - 0.25 to -1 dB from 300 to 3400 Hz PLAR Loop Feed Nominal / 48Vdc with 25mA current limit PLAR Ringing REN 0.1 B (AC) PLAR Ringing 2 REN at 1K meters per port
20 Hz, other frequencies by special order 90 v rms (square wave) 1 second on, 1 second off
Signaling Loop Start, DTMF ,or pulse All in-band signaling tones are carried transparently by the digitizing process. Customer is responsible for in-band signaling compatibility between a telephone and a switch, or between a PBX and a switch.
Application Illustration
