This specification covers the requirements
for telephone cable 0.4,0.5,0.65 and 0.9 mm.
gauges copper conductor. Fully color coded
even count polyethylene insulated twinned
until stranded and alpeth sheathed for aerial
installation. The cable shall be used on subscriber
and junction line. OPTION AND OTHER CONSTRUCTIONS Conductor : Solid annealed bare copper
wire, 0.40,0.50,0.65 and 0.90 mm (26,24,22,19
AWG) in size. Insulation : Color coded solid high
density polyethylene. Twisted Pairs : The insulated conductors
are twisted into pairs with specified color
combinations to provide pairs identification. Cable Assembly : Cables having 25 pairs
and less are assembled in a single group .
Cables having more than 25 pairs are assembled
in units each being identification by color
coded unit binders. Identification Tape : A tape, indelibly
marked with the following details, shall be
laid over the cable core or under the outer
lapping tape (nonhygroscopic dielectric material).
b. Year of Manufacture
(Duration of two years)
Or the marking shall be printed on the outer
lapping tape. The marking shall appear at
intervals not more than 50 cm throughout the
cable length. Core Covering : Nonhygroscopic dielectric
Shielding : A corrugated polyethylene coated
0.2 mm aluminum tape is applied longitudinally
with overlap. Messenger Wire : Galvanized steel wire
.No. of wire x Dia. of wire 7 x 2.03 mm. Outer Jacket : High molecular weight,
low or medium density polyethylene colored
black. Length Marker : Each length of cable
shall be permanently identified as, manufacturer
name, year of manufacturer, type and size
of cable, and sequencially number length.
The marking shall be printed on the outer
jacket. An alternate method of marking may
be use if acceptable to the Client. OPTION AND OTHER CONSTRUCTIONS
Cables of other conductor size or having other
mutual capacitance than shown in this catalogue
are available on request.