The term telephone cable is used to describe a rangeof internal, external and internal/external cables that are manufactured for
the interconnection of telephone equipment. In some cases, telephone cables
may also be utilized for additional applications. Twisted pair cabling is
commonly found in telephony, with the twists providing some interference
resistance. The pairs of wires within the cable are coded by colour. Twisted
pair cable that meets British Telecom specifications is designated as
CW1308, CW1308B and CW1128 cable. The external sheath on the telephone
cabling may be described as PVC, low smoke and fume (LSF), or low smoke zero
halogen (LSOH).

CW1308 Standard for Telephone Cabling

Cables made to the CW1308 standard are multipair phone cables manufactured for internal
connections. Cables that comply with CW1308 specifications are often
constructed with 0.5mm, copper conductors that are insulated. The number of
wire pairings within the cables will vary. A cable might come with 2
pairings or 200. Since 1308B can be used externally, it can feature a
UV-resistant outer sheath. The CW1308B cable has common construction
features with 1308 but is graded for both internal and external cabling. The
technical specifications for each CW1308 and 1308B cable will include a
minimum bending radius.

CW1128 Telephone Cable

External grade CW1128 telephone cable is constructed
for outdoor use. Cables built to this specification can be installed above
or below ground. The armoured CW1128 cable versions are suited for
underground installation. CW1128 external grade
come with various levels of durability. Comms Express can provide
information on telephone cable applications, as well as on flat modular
telephone cable.

Share this Comms InfoZone Article