DIGITAL TRANSMISSION SYSTEM AND DIGITAL TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a digital transmission system and a digital transmission method enabling a low cost and an improvement in an accommodation efficiency and transmitting a plurality of kinds of client signals having different bit rates by transparently accommodating or multiplexing the client signals. SOLUTION: Dummy patterns are inserted to fixed frames by using specified fixed frames to the client signals excepting the client signal having a highest bit rate in a plurality of kinds of the client signals having different bit rates. Accordingly, the bit rates of the client signals are elevated, and the bit rates of a plurality of kinds of the client signals are adjusted transparently within the bit-rate ranges capable of being accommodated in digital frames. COPYRIGHT: (C)2008,JPO&INPIT