System and method for the transport of backwards information...

Details System and method for the transport of backwards information... System and method for the transport of backwards information...

2006-07-04

2006-07-04

Vu, Huy D. (Department: 2664)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S539000, C370S392000, C370S472000, C370S474000

Reexamination Certificate

active

07072361

ABSTRACT:
A system and method are provided for transporting backward information in a digital wrapper format network of connected simplex devices. The system comprises a first simplex processor receiving downstream messages with overhead bytes. The first simplex processor selectively replaces overhead bytes with calculated overhead bytes and supplies the calculated overhead bytes. The system further comprises a buffer receiving the calculated overhead bytes from the first simplex processor and supplying the calculated overhead bytes. A second simplex processor accepts the calculated overhead bytes from the buffer and supplies an upstream message including the calculated overhead bytes. The first simplex processor receives messages in a frame format with an overhead section, drops the overhead section, and selectively reads backward message monitor bytes in the dropped overhead section to determine if upstream communication nodes are receiving transmitted messages.

REFERENCES:
patent: 6819686 (2004-11-01), Frannhagen et al.
patent: 6961350 (2005-11-01), Bendak et al.
patent: 2002/0172225 (2002-11-01), Ang et al.

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