<p>A method of providing data from a first network 100 to a second network wherein a first PEJ and a second PEK node are provided in the first network 100 and are each capable of supplying data to the second network, wherein: i. at any one time one of the first PEJ and second PEK nodes provides data to the second network; and ii. the first PEJ and second PEK nodes are arranged to communicate with one another such that the other of the nodes can provide data to the second network if a fault is detected, wherein the communications between the first and second node allow a fault to be detected.</p>
