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Tagged Image File Format  |  1991-12-11  |  37.5 KB  |  1832x2362
   ocr: Connector reference 21 .2, Serzed prior m tt 0 tb- p artswer Ciear Prlot cll Answer forward p:U tf 1 Answer Clear tb 0 turward StarlT3 29 31 3 3.4.5 22 Seized tb-0 prigr to answer. pilot off StartT2 Answer P Pilot an 32 4, 5 Stop T3 Stop T3 Cledr forwaid 23 21 24/Pitor digital off. 2.3 2.3.4.5 2Jpilotart diglal answered cleared Clear back - n-1 Piloton p=1 Ploton free Circuit 39 Clear Answer forward th=U 23,31 L ) 2,3.4, 31 4.5 CCITT-60891 System R2 line signalling: conversion ofincoming analogue version to outgoing digital version, group pilot supervision (Sheet 2 of5)