Excel multipair internal telephone cables are manufactured in accordance with BT type CW1308. These cores are twisted into pairs and the required number are sheathed together to form the cable. These cores are twisted into pairs and the required number are sheathed together to form the cable. For 32 pair and above cables, groups of pairs, are bundled together for ease of identification.
The print legend on the cable now includes information regarding the DOP number, Test and Classification of the cable for traceability.