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- [2] ITT 1240 DIGITAL EXCHANGE - AN INTRODUCTION ELECTRICAL COMMUNICATION, 1981, 56 (2-3): : 114 - 125
- [3] ITT 1240 DIGITAL EXCHANGE - AN INTRODUCTION. Electrical communication, 1981, 56 (2-3): : 114 - 125
- [5] ITT 1240 DIGITAL EXCHANGE HARDWARE DESCRIPTION. Electrical communication, 1981, 56 (2-3): : 135 - 147
- [6] ITT-1240 DIGITAL EXCHANGE - SOFTWARE ARCHITECTURE ELECTRICAL COMMUNICATION, 1979, 54 (03): : 225 - 230
- [7] ITT-1240 DIGITAL EXCHANGE - HARDWARE FOR A WIDE-RANGE OF DIGITAL EXCHANGE SIZES ELECTRICAL COMMUNICATION, 1979, 54 (03): : 215 - 224
- [8] ITT-1240 DIGITAL EXCHANGE - COST EFFECTIVE DIGITAL SWITCHING FOR UP TO 100000 LINES ELECTRICAL COMMUNICATION, 1979, 54 (03): : 205 - 214
- [10] ITT-1220 DIGITAL EXCHANGE - CUTOVER AND OPERATION OF A DIGITAL TRIAL EXCHANGE ELECTRICAL COMMUNICATION, 1979, 54 (03): : 161 - 169