Outside Telephone Cable

Air Core, Aerial Distribution,
Self-Supporting, RD8, Unshielded
RUS/RDUP Spec. PE-27 (One Pair)
and PE-28 (Multi-Pair)
Enhanced mechanical and electrical characteristics. Twisted pair core
assembly protected by an overall outer jacket. Self-supporting, galvanized steel
messenger is integrated into the jacket in a Figure-8 configuration.
See referenced pages in the Hardware & Supplies section:
Suggested Prep Tools
305AN F-8 Duct Slitter - I-10
820 Multi-wire Stripper/
Cutter - H-8
MK01A Multi-wire Stripper/
Cutter - I-11


Installation Hardware
F-8 Cable Suspension Clamps
- A-8
500MB Ready Access Closures
- B-1


Conductors Solid annealed bare copper.
Insulation Each conductor is insulated with solid polyolefin in distinctive colors, while standard
color codes are used for pair identification.
Cable Core
Assembly
Insulated conductors are twisted into pairs in a manner that minimizes unbalance.
In multi-pair constructions, pair twist lays are varied to minimize crosstalk and meet
capacitance unbalance requirements. Twisted pairs are formed into a firm, round core.
Core Covering The core assembly is completely enclosed by a non-hygroscopic, dielectric wrap.
Messenger
Strand
.109" solid, extra-high strength steel is jacketed in an integral extrusion with the core.
Outer Jacket Black PE designed to withstand exposure to direct sunlight, atmospheric temperature
changes and stresses expected in standard installations.
Footage
Marking
Printed sequentially every 2' along the outer jacket