Master Telephone Socket
For use as the first socket-outlet on a direct exchange line or PABX line. They contain surge protectors (for line protection against electrical surges) and capacitors.
Wiring regulation restrictions
Any number of sockets may be installed thereafter, with a maximum of 5 telephones
normally being allowed on one exchange line.
Commercial installations: Our telephone sockets are suitable in all situations after the PBX/PABX .
For key systems and other special systems, the manufacturers instructions should be referred to.