共 50 条
- [2] The transmission characteristics of toll telephone cables at carrier frequencies BELL SYSTEM TECHNICAL JOURNAL, 1941, 20 : 293 - 330
- [3] The Location of Opens in Toll Telephone Cables BELL SYSTEM TECHNICAL JOURNAL, 1927, 6 (01): : 27 - 54
- [4] CARRIER CURRENT PULSING OVER TOLL TELEPHONE CIRCUITS PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1949, 37 (07): : 814 - 821
- [8] Carrier systems on long distance telephone lines BELL SYSTEM TECHNICAL JOURNAL, 1928, 7 (03): : 564 - 629
- [9] Copper oxide modulators in carrier telephone systems BELL SYSTEM TECHNICAL JOURNAL, 1939, 18 (02): : 315 - 337