Слаботочка Книги Таблица ГЛ. Максимальная интенсивность поступающей нагрузки в зависимости от В и М* Окончание табл. Г.2. N. 0.01 0.05 0.1 0.5 1.0 10 15 20 30 N 0.01 5 б 7 8 9 10 12 13 15 16 17 18 19 20 23 2i 25 26 27 28 29 30 31 32 33 3 35 36 37 38 39 40 ♦г i*3 1*7 U8 f9 50 .0001 .011* .087 .235 .728 1.05 1.*2 1.83 2.26 2.72 3.21 3.71 ti.7B 5.34 5.91 6.50 7.09 7.70 8.32 8.95 9.58 10.2 10.9 11.5 12.2 12.9 13.6 14.2 14.9 15.6 16.3 17.0 17.8 18.5 19.2 19.9 20,6 21.4 22.1 22.8 23.6 24.3 25.1 25.8 26.6 27.3 28.1 28.9 .0005 .032 .152 .362 .649 .996 1.39 1.83 2.30 2.80 3.33 3.88 4.45 5.03 5.63 6.25 6.88 7.52 8.17 8.83 9.50 10.2 10.9 11.6 12.3 13.0 13.7 14.4 15.1 15.9 16.6 17.3 18.1 18.8 19.6 20.3 21.1 21.9 22.6 23.4 24.2 25.0 25.7 26.5 27.3 28.1 28.9 29.7 30.5 31.3 .001 .046 .194 .439 .762 1.15 1.58 2.05 2.56 3.09 3.65 4.23 4.83 5.45 6.08 6.72 7.38 8.05 8.72 9.41 10.1 10.8 11.5 12.2 13.0 13.7 14.4 15.2 15.9 16.7 17.4 18.2 19.0 19.7 20.5 21.3 22.1 22.9 23.7 24.4 25.2 26,0 26.8 27.6 28.4 29.3 30.1 30.9 31.7 32.5 .005 .105 .340 .701 1.13 1.62 2.16 2.73 3.33 3.96 4.61 5.28 5.96 6.66 7.38 8.10 8.83 9.58 10.3 11.1 11.9 12.6 13.4 14.2 16.0 15.8 16.6 17.4 18.2 19.0 19.9 20.7 21.5 22.3 23.2 24.0 24.8 25.7 26.5 27.4 28.2 29.1 29.9 30.8 31.7 32.5 33.4 34.2 35.1 36.0 .010 .153 .455 .869 1.36 1.91 2.50 3.13 3.78 4.46 5.16 5.88 6.61 7.35 8.11 8.88 9.65 10.4 11.2 12.0 12.8 13.7 14.5 15.3 16.1 17.0 17.8 18.6 19.5 20.3 21.2 22.0 22.9 23.8 24.6 25.5 26.4 27.3 28.1 29.0 29.9 30.8 31.7 32.5 33.4 34.3 35.2 36.1 37.0 37.9 .020 .223 .602 1*66 2.28 2.94 Э.63 4.34 5.08 5.84 6.61 7.40 8.20 9.01 9.83 10.7 11.5 12.3 13.2 14.0 14.9 15.8 16.6 17.5 18.4 19.3 20.2 21.0 21.9 22.8 23.7 24.6 25.5 26.4 27.3 28.3 29.2 30.1 31.0 31.9 32.8 33.8 34.7 35.6 36.5 37.5 38.4 39.3 40.3 .053 .381 .899 1.62 2.22 2.96 Э.74 4.54 5.37 6.22 7.08 7.95 8.83 9.73 10.6 11.5 12.5 13.4 14.3 15.2 16.2 17.1 18.1 19.0 20.0 20.9 21.9 22.9 23.8 24.8 25.8 26.7 27.7 28.7 29.7 30.7 31.6 32.6 33.6 34.6 35.6 36.6 37.6 38.6 39.6 40.5 41.5 А2.5 43.5 44.5 .111 .595 1.27 2.05 2.88 3.76 4.67 5.60 6.55 7.51 8.49 9.47 10.5 11.5 12.5 13.5 14.5 15.5 16.6 17.6 18.7 19.7 20.7 21.8 22.8 23.9 24.9 26.0 27.1 28.1 29.2 30.2 31.3 32.4 33.4 34.5 35.6 36.6 37.7 38.8 39.9 40.9 42.0 43.1 44.2 45.2 46.3 47.4 48.5 49.6 .176 .796 1.60 2.50 3.45 4.44 5.46 6.50 7.55 8.62 9.69 10.8 11.9 13.0 14.1 15.2 16.3 17.4 18.5 19.6 20.8 21.9 23.0 24.2 25.3 26.4 27.6 28.7 29.9 31.0 32.1 33.3 34.4 35.6 36.7 37.9 39.0 40.2 41.3 42.5 43.6 44.8 45.9 47.1 48.2 49.4 50.6 51.7 52.9 54.0 .250 1.00 1.93 2.95 4.01 5.11 6.23 7.37 8.52 9.68 10.9 12.0 13.2 14.4 15.6 16.8 18.0 19.2 20.4 21.6 22.8 24.1 25.3 26.5 27.7 28.9 30.2 31.4 32.6 33.8 35.1 36.3 37.5 38.8 40.0 41.2 42.4 43.7 4t*.9 46.1 47.4 48.6 49.9 51.1 52.3 53.6 54.8 56.0 57.3 58.3 .429 1.45 2.63 3.89 5.10 6.51 7.86 9.21 10.6 12.0 13.3 14.7 16.1 17.5 18.9 20.3 21.7 23.1 24.5 25.9 27.3 28.7 30.1 31.6 33.0 34.4 35.8 37.2 38.6 40.0 41.5 42.9 44.3 45.7 47.1 48.6 50.0 51.4 52.8 54.2 55.7 57.1 58.5 59.9 61.3 62.8 64.2 65.6 67.0 68.5 .667 2.00 3.48 5.02 6.60 8.19 9.80 11.4 13.0 14.7 16.3 18.0 19.6 21.2 22.9 24.5 26.2 27.8 29.5 31.2 32.8 34.5 36.1 .8 41.1 42.8 44.4 46.1 47.7 49.4 51.1 52.7 54.4 56.0 57.7 59.4 61.0 62.7 64.4 66.0 67.7 69.3 71.0 72.7 74.3 76.0 77.7 79.3 81.0 52 53 54 55 56 57 58 59 60 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 29.6 30.4 31.2 31.9 32.7 33.5 34.3 35.1 35.8 36.6 37.4 38.2 39.0 39.8 40.6 41.4 42.2 43.0 43.8 44.6 45.4 46.2 47.0 47.8 48.6- 49.4 50.2 51.1 51.9 52.7 53.5 54.3 55 л 56.0 56.8 57.6 58.4 59.3 60,1 60.9 61.8 62,6 63.4 64.2 65,1 65.9 66.8 67.6- 68.4 69.Э 0.05 32.1 32.9 33.7 34.5 35.3 36.1 36.9 37.8 38.6 39.4 40.2 41.0 41.9 42.7 43.5 44.4 45.2 46.0 46.8 47.7 48.5 49.4 50.2 51.0 51.9 52.7 53.6 54.4 55.3 56.1 56.9 57.8 58.6 59.5 60.4 61.2 62.1 62.9 63.8 64.6 65.5 66.3 67.2 68.1 68.9 69,8 70.7 71,5 72.4 73.2 33.3 35.0 35.8 36.6 37.5 38.3 39.1 40.0 40.8 41.6 42.5 43.3 45.0 45.8 46.7 47.5 48.4 49.2 50.1 50.9 51.8 52.7 53.6 5.4 55.2 56.1 56.9 57.8 58.7 59.5 60.4 61.3 62.1 63.0 63.9 614.7 65.6 66.5 67.4 68.2 69.1 70.0 70.9 71.7 72.6 73.5 74.4 75.2 36.9 37.7 38.6 39.5 40.4 41.2 42.1 43.0 43.9 44.8 45.6 46.5 47.4 48.3 49.2 50.1 51.0 51.9 52.8 53.7 54.6 53.5 56.4 57.3 58.2 59.1 60.0 60.9 61.8 62.7 63.6 64.5 65.4 66.3 67.2 68.1 69.0 69.9 70.8 71.8 72.7 73.6 74.5 75.4 76.3 77.2 78.2 79.1 80.0 80,9 38.8 39.7 40.6 41.5 42,4 43.3 44.2 45.1 46.0 46.9 47.9 48.8 49.7 50.6 51.5 52.4 53.4 54.3 55.2 56.1 57.0 58.0 58.9 59.8 60.7 61.7 62.6 63.5 614.4 65.4 66.3 67.2 68.2 69.1 70.0 70.9 71.9 72.8 73.7 74.7 75.6 76.6 77.5 78.4 79.4 80.3 81.2 82.2 83.1 84.1 41.2 42.1 43.1 44.0 44.9 45.9 46.8 47.8 48.7 49.6 50.6 51.5 52.5 53.4 54.4 55.3 56.3 57.2 58.2 59.1 60.1 61.0 62.0 62.9 63.9 64.9 65.8 66.8 67.7 68.7 69.6 70.6 71.6 72.5 73.5 74.5 75.4 76.4 77,3 78.3 79.3 80,2 81,2 82,2 83.1 84,1 85,1 86.0 87.0 88,0 45.5 46.5 47.5 48.5 49.5 50.5 61.5 62.6 53.6 54.6 55.6 56.6 57.6 58.6 59.6 60.6 61.6 62.6 63.7 64.7 65.7 66.7 67.7 68.7 69.7 70.8 71.8 72.8 73.8 74.8 75.8 76.9 77.9 78.9 79.9 80.9 82.0 83.0 84.0 85.0 86.0 87.1 88.1 89.1 90.1 91.1 92.2 93.2 94.2 95.2 10 50.6 51.7 52.8 53.9 55.0 56.1 67.1 68.2 59.3 60.4 61.5 62.6 63.7 6I4.8 65.8 66.9 68.0 69.1 70.2 71.3 72.4 73.5 74.6 75.6 76.7 77.8 78.9 80.0 81.1 82.2 83.3 85.5 86.6 87.7 88.8 89.9 91.0 92.1 93.1 94.2 95.3 96.4 97.5 98.6 99.7 101. 102. 103. 104. 15 20 55.2 56.3 57.5 58.7 59.8 61.0 62.1 63.3 64.5 65.6 66.8 68.0 69.1 70.3 71.4 72.6 73.8 74.9 76.1 77.3 78.4 79.6 80,8 81.9 83.1 84.2 85.4 86.6 87.7 88.9 90.1 91.2 92.4 93.6 94.7 95.9 97.1 .98.2 99.4 101. 69.9 71.3 72.7 74.2 75.6 77.0 78.4 79.8 81.3 82,7 .84.1 85.5 87.0 88.4 89.8 91.2 92.7 94.1 95.5 96.9 98.4 99.8 101. 103. 104, 105. 107. 108. 110. 111. 113, 114. 115. 117. 118. 103. 120. 104. 121. 106. 123. 107. 124. 108. 126. 59.7 61.0 62.2 63.5 64.7 65.9 67.7 68.4 69.7 70.9 72.1 73.4 74.6 75.9 77.1 78.3 79.6 80.8 82.1 83.3 84.6 85.8 87.0 88.3 89.5 90.8 92.0 93,3 94.5 95.7 97.0 98.2 99.5 101, 102, 102, 109, 127. 103, 111. 128, 104, 112, 130, 105, 113. 131. 106, 114. 133. 108. 116. 134. 109. 117. 135. 110. 118. 137. 111. 119. 138. 112. 121. Ш0. 40 82.7 84.3 86.0 87.6 89.3 91.0 92.6 94.3 96.0 97.6 99.3 101. 103. 104. 106. 108. 109. 111. 113. 114. 116. 118. 119. 121. 123. 124. 126. 128. 129. 131. 133. 134. 136. 138. 139. 141. 143. 144. 146. 148. 149. 151. 153. 154. 156. 158. 159. 161. 163. 164, * N ~ число обслуживающих приборов; цифры вверху колонок показывают вероятность потерь В, 7о Таблица Г.2. Максималшая интенсивность поступающей нагрузки в зависимости от В, N к числа источников М * Окончание табл. Г.1.
10 15 1.50 1.95 2.31 1.30 1.72 2.08 1.62 1.55 1.51 1.1? 1.*5 1.38 1.20 1.11 1.10 1.07 1.05 .991 2.21 2.15 2.01 1.92 1.86 1.82 1.71 3.39 3.07 2.90 2.78 2,71 2.60 2.51 2.12 1.38 1.02 3.82 3.69 3.38 3.26 3.15 5.39 5.00 1.78 1.31 1.11 3.99 1.97 1.90 1.85 1,82 1.79 1.72 2.98 2.71 2.56 2.17 2.11 2.36 2.21 1.01 3.73 3.56 3.15 3.37 3.27 3.18 3.09 5.12 1.78 *.59 1.17 1.17 1.05 3.91 6.20 5.85 5.61 5.21 5.05 1.90 3.13 3.16 3.02 2.93 2.87 2.82 2.70 1.58 1.28 1.12 1.01 3.91 3.81 3.71 3.66 5.73 5.11 5.21 5.12 1.81 1.72 1.62 6.89 6.56 6.37 5.97 5.81 5.68 2.65 2.12 2.31 2.21 2.19 2.16 2.13 2.06 3.86 3.60 3.16 3.37 3.31 3.27 3.11 5.09 1.80 1.65 ♦.55 1.18 1.38 1.29 1.21 3.35 3.13 3.02 2.95 2.90 2.86 2.81 2.76 1.76 1.51 1.38 1.30 1.21 1.20 1.08 6.17 5.91 5.77 5.68 5.61 5.52 5.11 5.37 3. 3. 3. 3. 3. 3. 5. 5. 5. 5. 5. 5. 5. 7. 7. 7. 7. 6. 6. 6. 6. 6.32 7.59 9. 6.02 7.32 8. 5.85 7.17 8. 5.71 7.07 8. 5.18 6.81 8. 5.37 6.71 8. 5.28 6.66 8. 7.56 9.01 10. 7.25 8.71 10. 7.07 8.58 10. 6.70 8.25 10. 6.56 8.13 10. 6.14 8.03 9. N M 9 10 12 .01 .05 0.1 0.5 1.0 13 11 15 16 17 18 20 25 30 2.85 2.19 2.29 2.16 1.93 1.76 1.63 3.59 3.18 2.91 2.78 2.66 2.50 3.08 2.39 2.95 2.31 2.87 2.12 2.61 3.18 3.08 2.85 2.70 2.13 2.21 2.08 1.30 3.81 3.57 3.39 3.26 3.80 3.37 3.11 2.97 2.70 2.19 2.32 1.38 3.91 3.63 3.15 3.31 3.20 5.19 1.68 1.37 ♦.15 3.99 3.86 3.76 6.03 5.17 5.13 1.88 1.70 1.56 1.31 1.03 3.85 1.61 1.17 3.89 3.71 3.57 15 20 30 10 11 12 13 11 16 18 20 12 13 11 15 16 20 25 30 12 13 11 15 16 17 18 20 3.60 1.31 1.66 25 3.36 l.d 1.39 30 3.32 3.90 1.21 1.65 1.20 3.91 3.77 3.16 3.23 3.03 5.15 1.61 1.31 1.13 3.98 3.86 3.01 3.68 1.01 2.93 3.56 3.88 2.75 3.36 3.68 2.65 3.25 3.56 5.52 5.00 1.69 1.17 1.32 1.19 6.01 5.16 5.13 1.90 1.72 1.59 1.18 6.90 6.31 5.95 5.69 5.50 5.35 5.12 1.77-1.58 5.09 1.61 1.38 1.20 3.89 3.65 3.15 5.59 5.1* 1.89 1.17 1.Ю 1.16 3.95 6.11 6.00 5.76 5.59 5.29 5.06 1.86 5.57 6.03 6.56 7.11 5.07 5.51 6.09 7.00 1.79 5.26 5.81 6.75 1.59 5.06 5.61 6.57 I.H 1.91 57 6.13 3.38 1.23 1.70 5.27 6.21 3.25 1.09 1.56 5.13 6.11 3.15 3.99 *.16 5.02 6.02 2.91 3.73 1.19 *.7б 5.77 6.11 5.85 5.51 5.27 5.09 1.95 1.81 7.31 6.72 6.35 6.09 5.90 5.71 5. St 5.16 1.96 6.19 5.97 5.65 5.13 5.27 5.11 1.95 1.81 1.59 1.17 7.11 6.88 6.51 6.30 6.12 5.98 5.86 5.68 5.Ю 5.21 8.39 7.80 7.11 7.18 6.99 6.83 6.60 6.21 6.01 6.98 6.17 6.16 5.91 5.78 5.65 5.16 5.32 5.10 1.98 7.95 7.Ю 7.07 6.81 6,66 6.52 6.11 6.23 5.95 5.79 8.92 8.35 8.00 7.75 7.56 7.11 7.18 6.83 6.63 7.5 7.01 6.71 6.51 6.38 6.25 6.07 5.93 5.72 5.59 8.53 8.01 7.69 7.17 7.30 7.17 7.06 6.88 6.62 6.16 9.52 8.98 8.65 8.12 8.21 8.09 7.87 7.51 7.35 8.17 8.02 7.75 7.56 7.11 7.30 7.13 7.01 6.81 6.69 9.50 9.01 8.76 8.56 8.10 8.28 8.18 8.03 7.79 7.61 10.5 10.1 9.77 9.56 9.10 9.27 9.08 8.78 8.61 7.30 6.92 6.71 6.56 6.29 6,07 5.89 8.39 8.01 7.78 7.62 7.50 7.33 7.21 7.13 6.90 9.19 9.09 8.86 8.69 8.56 8.16 8.31 8,21 8.01 7.93 10.6 10.2 9.91 9.77 9.63 9.53 9.11 9.31 9.10 8.98 11.7 11.3 11.0 10.8 10.7 10.6 10.1 10.2 10.0 8.05 7.71 7.51 7.37 7.13 6.93 6.77 9.22 e.87 8.66 8.51 8.11 8.25 8.15 8.07 7.87 10.1 10.0 9.81 9.66 9.55 9.16 9.33 9.23 9.08 8.99 11.6 11.2 11.0 10.8 10.7 10.6 10.5 10.1 10.2 10.1 12.7 12.1 12.1 12.0 11.8 11.8 11.6 11.1 11.3 8.80 8.18 8.29 8.17 7.91 7.76 7.61 10.0 9.72 9.52 9.39 9.29 30 Ю 10.1 10.2 9.99 9.88 9.69 9.5 9.11 11.9 11.6 11.1 11.3 11.2 11.3 11,0 10.8 10.6 10.5 10.1 10.3 10.2 10.1 10.0 12.5 12.2 12.0 11.9 11.7 11.7 11,6 11.5 11.3 11.2 13.8 13.1 13.2 13.1 13.0 12.9 12.8 12.6 12.5 13.3 13.0 12.8 12.7 12.6 12.6 12.5 12.1 12.3 12.2 11.7 11.1 11.2 11.1 11.0 11.0 13.9 13.8 13.7 13.6 16.1 15.8 15.7 15.5 15.5 15.* 15.3 15.1 15.0 12. 12. 12; 12. 11. 11. 11. 11. 13. 13. 13. 13. 9.15 11.1 13. 9.06 11.0 13. 8.99 11.0 13. 8.81 10.8 13. 15. 15. 15. 15. 15. 15. 15. 15. 11. 11. 17. 17. 17. 17. 16. 16. 16. 16. 16. 16. 19. 18. 18. 18. 18. 18. 18. 18. 18. список ЛИТЕРАТУРЫ К главе 1 R. Smith and W. Sonneville, Record 81 Telco Construction Set at $23.5 Billion, Up 5.6%, Telephone Engineer and Management, January 15, 1981, p55. 2 N. R. Kleinfield, AT&T reprint from New York Times. 3 Technical Staff, Bell Laboratories, Engineering and Operations in the Bell System, Bell Telephone Laboratories Inc., 1977. 4 Reference Data for Radio Engineers, 5th ed., Howard Sams & Co., ITT, Indianapolis, 1972. 5 L. Jachimowicz, J. Olszewski, and \. Kolodny, Transmission Properties of Filled Thermoplastic Insulated and Jacketed Telephone Cables at Voice and Carrier Frequencies, IEEE Transactions on Communications, March 1973, pp 203-209. 6 D. G. Messerschmitt, An Electronic Hybrid with Adaptive Balancing for Telephony, IEEE Transactions on Communications, August 1980, pp 1399-1407. 7 George M. Dick, SBSs Celestial Version of The System is the Solution, Datamation, November 1977, pp 141-158. 8 W. M. Combs, C. P. Fort, and R. A. Zeitz, Ending the Information Float, Proceedings of Intelcom 79, Horizon House International, 1979, pp 42-45. 9 A. J. Aikens and D. A. Lewinski, Evaluation of Message Circuit Noise, Bell System TechnicalJournal, July 1970, pp 879-909. 10 J. L. Sullivan, A Laboratory System for Measuring Loudness Loss of Telephone Connections, Bell System TechnicalJournal, October 1971, pp 2663-2739. 11 W. K. MacAdam, A Basis for Transmission Performance Objective in a Telephone Communications System, AIEE Transactions on Communications and Electronics, May 1978, pp 205-209. 12 F. P. Duffy and T. W. Thatcher, Jr., Analog Transmission Performance on the Switched Telecommunications Network, Bell System TechnicalJournal, April 1971, pp 1311-1347. 13 W. R. Bennett and J. R. Davey, Data Transmission, McGraw-HUl, New York, 1965. 14 Members of Technical Staff, Bell Telephone Laboratories, Transmission Systems for Communications, 4th ed.. Western Electric Company, 1971. 15 H. R. Huntly, Transmission Design of IntertoU Telephone Trunks, Bell System TechnicalJournal, September 1953, pp 1019-1036. 16 D. L. DuttweUer and Y. S. Chen, A Single-Chip VLSI Echo Cancellor, Bell Systems TechnicalJournal, February 1980, pp 149-160. 17 H. G. Suyderhoud, M. Onufry, and S. J. Campanella, Echo Control in Tele- phone Communications, National Telecommunications Conference Record, 1976, pp 8.1-1-8.1-5. 18 F. T. Andrews, Jr. and R. W. Hatch, National Telephone Network Transmission Planning in the American Telephone and Telegraph Company, IEEE Transactions on Communications Technology, June 1971, pp 302-314. 19 A. E. Ritchie and J. Z. Menard, Common Channel Interoffice Signaling, An Overview, Bell System Technical Journal, February 1978, pp 221-236. 20 A. E. Joel, Jr., XTircuit Switching: Unique Architecture and Applications, COMPUTER, June 1979, pp 10-22. 21 J. J. Bernard, CCITT International Signaling No. 6, Telecommunications Journal, Vol. 41, No. 2, 1974, p 69. 22 John C. McDonald, Techniques for Digital Switching, Communication Society Magazine of IEEE, July 1978,pp 11-19. 23 K. E. Fultz and D. B. Penick, The TI Carrier System, Bell System Technical Journal, September 1965, pp 1405-1451. 24 M. R. Aaron, Digital Communications-The Silent (R)evolution? IEEE Communications Magazine, January 1979, pp 16-26. 25 Supply Record on NEC PCM Microwave Equipment, Nippon Electric Company, Tokyo, May 1974. 26 J. B. Jacob, The New Approaches and Solutions Offered by the Digital ESS.E 10 to Deal with Switching, Operation, and Maintenance Functions, International Communications Conference Proceedings, 1979, pp 46.6-1-46.6-5. 27 R. Bruce, P. Giloth, and E. Siegel Jr., No. 4ESS-Evolution of a Digital Switching System, IEEE Transactions on Communications, July 1979, pp 1001-1011. 28 J. C. McDonald and J. R. Baichtal, A New Integrated Digital Switching System, National Telecommunications Conference Record, 1976, p 3.2-1-3.2-5. 29 First Class 5 Digital Central Office goes into Service in Georgia, Telephony, August 1, 1977,pp 24-25. 30 J. A. Stewart, System Considerations for Short Haul Multi-Channel Subscriber Carrier, International Conference on Communications Record, 1974, p 24E-1. 31 F. T. Andrews, Jr., Customer Lines Go Electronic, Bell Labs Record, February 1972, pp 59-64. 32 M. T. Manfred, G. A. Nelson, and C. H. Sharpless, Digital Loop Carrier Systems, Bell System TechnicalJournal, April 1978, pp 1129-1142. 33 S. J. Brolin, G. E. Harrington, and G. R. Leopold, The Subscriber Loop Carrier System Gets Even Better, Bell Labs Record, May 1977, pp 119-122. 34 S. Brolin, Y. S. Cho, W. P. Michaud, and D. H. Williamson, Inside the New Digital Subscriber Loop System, Bell Labs Record, April 1980, pp 110-116. 35 L. A. Sibley, Digital Data System-Status and Plans, International Communications Conference Proceedings, 1979, pp 54.1.1-3. 36 R. C. Prime and L. L. Sheets, The lA Radio Digital System Makes Data Under Voice a Reality, Bell Labs Record, December 1973, pp 335-339. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 [87] 88 89 90 91 |
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