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US 2004/0174871 A1Published application
Synchronous transfer mode-256 adder/dropper
AssigneeElectronics and Telecommunications Research Institute
InventorsByoung Sung Kim, Je Soo Ko
Life of this patent
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Abstract
A synchronous transfer mode (STM)-256 adder/dropper which provides a communication path between STM-64 optical channels in an apparatus of multiplexing STM-64 optical channels into STM-256 electrical signals, is provided. The STM-256 adder/dropper transmits STM signals by multiplexing the STM signals at a low speed and simultaneously provides a communication path between lower channels.
Claims14
A synchronous transfer mode (STM)-256 adder/dropper comprising:
- first through fourth STM-64 adders/droppers, which multiplex STM signals at a low speed between an STM-256 framer and an optical transceiver, add and drop the STM signals, and provide synchronized data to the STM-256 framer and the optical transceiver;
- and
- a switch unit, which switches data input/output of the STM-64 adders/droppers.
Dependencies are inferred from the claim text.