Telephone cables with polyethylene insulation, with

1 Conducting cores - single-wire from copper soft wire. 2 Insulation - in the form of a continuous concentric layer. 3 Pairs - twisted from insulated cores of different colours.

Pairs together with strands of water-blocking materials are twisted into five or ten-pair elementary bundles. 4 Core - twisted from elementary bundles of different colours. 5 Belt insulation - made of polyamide, polyethylene, polyethylene terephthalate, polypropylene tapes and tapes of water blocking material.

6 Shield: aluminopolyethylene tape laid lengthwise. A tinned copper wire is laid longitudinally under the screen. 7 Sheath: halogen-free polymer composition.