Add/drop multiplexer and interface

Details Add/drop multiplexer and interface Add/drop multiplexer and interface

2011-03-22

2011-03-22

Mattis, Jason E (Department: 2461)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S538000, C370S539000

Reexamination Certificate

active

07912096

ABSTRACT:
An add/drop multiplexer where a first signal converter converts first-low-order-group signals received from DSn network, into high-order-group signals, which are transferred to SDH (SONET) network and to which second-low-order-group signals, slower in transmission speed than the first-low-order-group signals are added. A second signal converter converts high-order-group signals, received from SDH (SONET) network, into first-low-order-group signals. A selector selectively outputs first-low-order-group signals received from the DSn network, or first-low-order-group signals obtained by the second signal converter, as the input signals to the first signal converter.

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patent: 11-122320 (1999-04-01), None

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