Fundamentals of carrier telephony. Pt 1. Principles and applications
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Explains the use of carrier telephoning to increase the number of telephone channels on a single wire without the extra cost of wires etc. Using diagrams it shows how four voices can use the same wires without interference to each user.
Sources
- 16mm Filmography (legacy record) — title, description, catalog record
Original permalink · Record added 2026-01-23 03:32:48