Telecommunication Journal, 39. sējums,1-396. lapaInternational Telecommunication Union., 1972 |
No grāmatas satura
1.–3. rezultāts no 80.
109. lappuse
... line protection . QUESTIONS UNDER STUDY concerning : Protection of telephone lines against disturbance from electric power installations Protection of cables against electrolysis and chemical action Transmission and maintenance ...
... line protection . QUESTIONS UNDER STUDY concerning : Protection of telephone lines against disturbance from electric power installations Protection of cables against electrolysis and chemical action Transmission and maintenance ...
154. lappuse
... line interests in the Persian Gulf where Iran's oil , petrochemical and gas industries are located . The international telephone lines were similarly routed , plus an additional five telephone lines routed from Persepolis via the Indian ...
... line interests in the Persian Gulf where Iran's oil , petrochemical and gas industries are located . The international telephone lines were similarly routed , plus an additional five telephone lines routed from Persepolis via the Indian ...
285. lappuse
... line resistance for subscriber lines is fixed at 1500 12 and for junction lines at 3000 12. The minimum insulation resistance under working conditions is given as 20 000 12 . The terminating traffic with an assumed average holding time ...
... line resistance for subscriber lines is fixed at 1500 12 and for junction lines at 3000 12. The minimum insulation resistance under working conditions is given as 20 000 12 . The terminating traffic with an assumed average holding time ...
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