H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/69
H04L 5/22 (2006.01) H04J 3/08 (2006.01)
Patent
CA 1331639
ABSTRACT The present invention relates to a process for uncoupling signals from at least one sub-area of the supplementary signals and to couple signals into at least one sub-area of the supplementary signals of transport modules of a synchronous digital signal hierarchy as in CCITT Draft Recommendations G.70X, G.70Y, and G.70Z. When uncoupling, this task has been solved in that a sub-area of the secondary signals is uncoupled from the transport module in a demultiplexing and spreading system, and during a period of time is spread within the framework. The spread signal is broken down, for example, into the secondary signals of the selected sub-area that are associated with the transport modules of the lowest stage of the hierarchy that are contained in the transport module. For coupling, these steps of the process are carried out in the reverse and opposite sense. These secondary signals are moved onto the lines of the bus. Control signals, fed in externally or generated in the demultiplexing and spreading system, are transmitted in a sub-bus. After addresses have been input, bytes or groups of bytes can be picked off the bus through the customer intersection points and undergo further processing. This process can be applied in synchronous digital signal hierarchies such as NNI (network node interface).
601532
Fiedler Udo
Lechler Walter
Musil Gerhard
Volejnik Wilhelm
Weimert Gunter
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
Philips Electronics N.v.
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