OTHER SIGNALING EXAMPLES
Digital signaling systems must support (interwork with) the older analog signaling systems because analog is still the pervasive technology used in the local loop. The next part of this discussion shows two common operations.
These examples are not all-inclusive, but they represent common implementations. For the reader who needs information on each service option offered by the U.S. BOCs, I refer you to [Bellcore Document SR-TSV-002275, Issue 2, April 1994].
Example One: Feature Group B (FGB)
The BOCs classify several of their access arrangements with the title "Feature Group." This example is feature group B, which specifies an access agreement between an LEC end office (EO) and an interexchange carrier (IC) (see ...
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