TRANSPARENT MULTIPLEXER/DEMULTIPLEXER AND SIGNAL PROPAGATION METHOD

PROBLEM TO BE SOLVED: To avoid revision of a current system by selecting a plural number K to be an integer based on each sub signal rate and a rate of a super-carrier signal so as to relieve a deficient fiber capacity for each span in the case of transmitting plural sub signals (K) on a high speed...

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Bibliographic Details
Main Authors MARTIN DAVID WRIGHT, TATAR MOHAMMED ISMAEL, ARMSTRONG TIMOTHY JAMES, WIGHT MARK STEPHEN, NICHOLSON DAVID JOHN, GAGNON RONALD J, SOLHEIM ALAN GLEN
Format Patent
LanguageEnglish
Published 22.12.1998
Edition6
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
SELECTING
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Summary:PROBLEM TO BE SOLVED: To avoid revision of a current system by selecting a plural number K to be an integer based on each sub signal rate and a rate of a super-carrier signal so as to relieve a deficient fiber capacity for each span in the case of transmitting plural sub signals (K) on a high speed span between 1st and 2nd sites in a transparent way. SOLUTION: A TMux 40 has four sub input ports 61-64, receives optical signals OC-48#1-4 in a SONET format via input spans 51, 53, 55, 57 and converts the signals into input STS-48#1-4. The signals through the sub input ports 61-64 are subject to SONET physical layer operation, clock recovery/synthesis, descrambling, framing, section and line overhead processing, separation of the STS-48, synchronization of an STS path with a local clock supplied from a synchronization unit 72 and transmission of the received STS-1 to a manager 65. Thus, APS bytes are passed in a transparent way and a usual protection is conducted on the sub system.
Bibliography:Application Number: JP19980115087