共 50 条
- [1] TRACER - VOICE-FREQUENCY RELAY SYSTEM FOR RADIO NAVIGATION AIDS RADIO AND ELECTRONIC ENGINEER, 1975, 45 (06): : 299 - 307
- [2] A VOICE-FREQUENCY SIGNALLING SYSTEM FOR OUT-OF-AREA EXCHANGE LINES POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1968, 60 : 259 - &
- [3] MONITORING OF VOICE-FREQUENCY CHANNEL PARAMETERS TELECOMMUNICATIONS AND RADIO ENGINEER-USSR, 1971, (09): : 34 - &
- [5] A VOICE-FREQUENCY BYPASSING FILTER FOR CARRIER REPEATERS NTZ-COMMUNICATIONS JOURNAL, 1965, 4 (03): : 112 - &
- [6] DEVELOPMENTS IN FREQUENCY-SHIFT VOICE-FREQUENCY TELEGRAPH EQUIPMENT POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1979, 72 (OCT): : 191 - 196
- [7] INTELLIGIBLE CROSSTALK PERFORMANCE OF VOICE-FREQUENCY CUSTOMER LOOPS BELL SYSTEM TECHNICAL JOURNAL, 1978, 57 (08): : 3001 - 3029
- [8] THE INFLUENCE OF SIGNAL IMITATION ON THE RECEPTION OF VOICE-FREQUENCY SIGNALS PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1949, 96 (41): : 223 - 235
- [9] PUSHBUTTON CALLING WITH A 2-GROUP VOICE-FREQUENCY CODE BELL SYSTEM TECHNICAL JOURNAL, 1960, 39 (01): : 235 - 255
- [10] DEVELOPMENTS IN FREQUENCY-SHIFT VOICE-FREQUENCY TELEGRAPH EQUIPMENT. Post Office Electrical Engineers Journal, 1979, 72 (pt 3): : 191 - 196