PBX-BTMASTER
Master - In order to ensure that UK-style telephones ring as extensions on a PBX each phone must be connected via a PBX master socket. This type of
socket includes the ring-circuit required by UK type telephones. 65mm.
PBX-BTSLAVE
Slave - As the master but excludes ring circuit, if used then must have connection to Pin 3 from a master socket otherwise phones will not ring. See also Modular Connectors in our networking-sundries section which enable a mix of phone and networking connections in the same socket. 65mm

PBX-NTE5
Austin Taylor NTE5: uses screw terminals for connection to the main incoming telephone line pair. The NTE5 measures 84mm square.

PBX-NTE5-PRE
Pressac NTE5: uses IDC terminals (krohn). This NTE5 has a 22 milliHenry inductor on the bell wire which adds extra high end filtering on the bell wire. It is reported that this is required for the BT HomeHub. This inductor IS NOT a substitute for an iPlate or other ADSL filter which will be based on at least one coupled-inductor and several other components to achieve the necessary isolation between the phone and ADSL circuits.



