Method for transmitting concatenated data signals
AssigneeSiemens Aktiengesellschaft
InventorHorst Mueller
Life of this patent
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Abstract
A method for transmitting concatenated data signals wherein an STM-256/OC-768 signal is divided into four concatenated signals which are inserted into modified STM-64/OC-192 pulse frames. The bytes of the unused information and the frame alignment words of the STM-256/OC-768 signal are not transmitted so that the total content of the STM-256/OC-768 signal, reduced by this redundant information, can be transmitted transparently in the modified STM-64/OC-192 pulse frames. The concatenated signals can be regenerated without problems.
Claims8
A method for transmitting an STM-256/OC-768 data signal having a higher byte rate than the STM-64/OC-192 data signal, the method comprising the steps of:
- dividing the data signal byte by byte into four concatenated subsignals by removing unused bytes of overhead and frame alignment bytes;
- forming modified STM-64/OC-192 pulse frames, which have a reduced number of frame alignment bytes;
- inserting the subsignals into the modified pulse frames;
- inserting a corresponding number of bytes of, in each case, one of the subsignals into each modified pulse frame instead of the frame alignment bytes no longer transmitted;
- inserting remaining bytes of the respective subsignal into unused time slots of an overhead and a payload of the modified pulse frame;
- transmitting the subsignals;
- and
- combining the subsignals again at a receiving end to form an STM-256/OC-768 data signal at the receiving end.
Dependencies are inferred from the claim text.