Telephones outlets

To avoid the need for alot of surface cable fixed after a building is occupied , it is quite common to put in wiring for telephones as part of the services built into the structure as the building is erected . This wiring must , of course , be brought to suitable terminals in the positions at which the telepohoens are to be connected later . The olny essential requirement is an opening through which standard telephone cable can be brought out neatly . A plate with a suitable outlet which fits into a standard box , is shown in Figure 1.11 .
  THe more modern practice is to connect each telephone set to the permanent installation via a telecom socket and plug ; in the UK , a BT pattern in used ,  which is slightly different to the US pattern . The socket forms part of a lid which scres onto a standard conduit box at the agreed outlet positions . An outlet of this kind is shown in Figure 1.11 .