Combined copper@-glass fibre cable for subscriber use - has five spiral quad copper@ conductors surrounding a central glass fibre conductor of ten bunched strands

摘要

The copper-glass fibre cable (1) for subscriber station use has five spiral four quad copper conductors (2) plus a central bunch glass fibre conductor (3a) contg. ten double strands within a fixed or loose tubular casing. Each quad conductor comprises two double conductors. Alternatively, the central conductor can be cylindrical, with each fibre resting in the flutes of a longitudinal glass-fibre base. ADVANTAGE - Combined copper and glass fibre cable. Allows audio telecommunications via copper conductors, and information transmission via either copper or glass fibre conductors depending on technical and economical considerations.