Apparatus and method of processing signaling bits of integrated services digital network signals

摘要

A time slot interchanger (10) includes a D-channel processing device (30). The D-channel processing device (30) includes a main memory (32), a D-channel memory (34), and a D-channel assembler (36). The main memory (32) receives telephony data and signaling traffic from a subscriber in the form of integrated services digital network signals. Two-bit D-channel signaling portions of each integrated services digital network signals are extracted and placed into the D-channel memory (34). The D-channel assembler (36) assembles the two-bit D-channel signaling portions into eight-bit digital signal level zero (DS0) signals. The eight-bit DS0 signals are stored in the D-channel memory (34) for subsequent transfer with selected telephony data traffic from the main memory (32) over a synchronous optical network link.