D2 Channel Bank: Physical Design and Introductory Program
01 October 1972
The D2 Channel Bank multiplexes and codes the telephone traffic carried by 96 two-way toll-grade trunks into 4 two-way 1.544-megabit signals for transmission. Companion articles in this series discuss system aspects of the D2 Channel Bank, and the design of the circuits which embody it. This paper discusses the physical design of the D2 Channel Bank. This includes activities that have circuit information as input and, as output, the specification of a manufacturable design to Western Electric. The D2 introductory program and an on-going reliability program intended to ensure satisfactory service to the Operating Companies are also discussed.