MK-Secondary-Phone-Sockets-MK-K427-WHI-p-Secondary-telephone-socket-from-the-MK-Logic-Plus-range-ideal-for-direct-&-indirect-connections-between-a-termination-point-of-a-public-telecommunications-system-&-any-piece-of-approved-telecommunications-apparatus-p-MK-K427-WHI-Secondary-Phone-Socket