Used as feeder line of indoor communication network, interoffice trunk, suspension wire and cables in the same sheath, facilitate the installation into a on-site operation, mainly used in overhead installation.

Structural characteristics:
Conductor: Annealed bare copper wire, diameter of copper wire: 0.32, 0.40, 0.50, 0.63, 0.70, 0.90mm

Insulation: Polyethlene or polypropylene, color standard based on whole chromatogram. Insulation wire pairs: Wring the single insulation single wires into pairs according to different pitch, to achieve crosstalk attenuation at maximum, and organize them by the stipulated chromatogram for convenience of wire-pair-recognition.

Cable core structure: With basic unit of 25 pairs, those exceeding 25 pairs shall be organized by units. Each unit shall be wrapped based on the stipulated chromatogram for convenience of unit-recognition.

Label and length mark: With identifying marks outside the cable surface, markup content: Model, numver of wire pairs, conductor diameter, manufacturer, date of production. The length mark space shall be<=1m, non-overlapping with identifying marks. Different types of cable sheath structure can be provided according to customer requirements of different installation environment, such as 23, 53, 43, 553, etc