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The few things I've noticed so far, is that the V1a and V1b cathode bypass cap values are different, they are now 2.2u and 680N from 4.7u and 1u on the previous gen DSL.. Following diagrams is pretty simple, but using it within the range of how the device operates is a different matter. Our best advice is not really only look at the diagram, nevertheless understand how the components operate when in use. At&T Network Interface Device Wiring Diagram Source: tse4.mm.bing.net