Cable Specification - Bell System 2-72 Multi Way Installation And Operating Manual

tabellet Apartment Station 2-72 Way System

Cable Specification

All system wiring must be carried out using Cat5 signal cable and where necessary 1mm²
(or greater) power cable as tabulated below. Cat5 cable has a known performance for the
transmission of video signals, whilst telephone or alarm cables are not suitable.
Bell System will be unable to offer any warranty or support for systems installed
using incorrect cables.
Cat5 Cable Specification
Cat5 is our short reference for EIA standard UTP Category 5 Unshielded Twisted Pair data
cable. This is a standard solid core twisted pair cable having 4 pairs (8-cores) and no
shield. The cores are in pairs where Blue and 'Blue with a White stripe' are twisted
together as the first pair. The other three pairs are similar with main colours Orange,
Green and Brown.
 Also available and acceptable are:
UTP Category 5e (Cat5e)
UTP Category 6 (CAT6)
UTP Category 6e (CAT6e)
The exact cable can be chosen from the above on cost and availability grounds.
 STP (Shielded Twisted Pair) cables are not recommended.
 UTP "patch cables" are not recommended.
NOTE: Cat5 cable is easily identifiable as the specification is printed on the sheath
PD-307 Issue 2 Installation and Operating Manual Page 13 of 48