Abstract: A method is disclosed for using an alternate communication path to send and receive data between a first network node and a second network node. The method includes establishing a first communication path between the first network node and the second network node that sends and receives data between the first network node and second network node and a second communication path between the first network node and the second network node that sends and receives data between the first network node and second network node. A diagnostic program tests the first and second communication paths for network failures causing the alternate network path to send and receive data between the first network node and second network node when a network failure in the first and second communication paths is detected and alerting a technician of the failure and that the first and second communication paths need repair. The first and second communication paths returning to normal operation upon the repair of the failure.

Abstract: A low-fusing temperature porcelain compositions, methods of use thereof on metal or porcelain substrates to form dental prostheses and kits therefor. Compositions of the invention have a fusing temperature of less than 800.degree. C. and a coefficient of thermal expansion compatible with a substrate of metal or ceramic. Each composition includes, in weight percent of the composition, from 40 to 65 percent by weight SiO.sub.2, from 6 to 12 percent by weight Al.sub.2 O.sub.3, from 6 to 12 percent by weight Na.sub.2 O, from 5.5 to 10.50 percent by weight K.sub.2 O, from 1 to 3 percent by weight Li.sub.2 O, from 0.8 to 2.5 percent by weight CaO, from 0.8 to 4.0 percent by weight B.sub.2 O.sub.3 and from 0.1 to 0.8 percent by weight CeO.sub.2.