Frame-relay frame transmission circuit

Multiplex communications – Communication techniques for information carried in plural... – Assembly or disassembly of messages having address headers

Reexamination Certificate

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Details

C370S395520, C370S395530

Reexamination Certificate

active

06977947

ABSTRACT:
This invention is intended to eliminate an operation to copy the frame-relay frame, which was written in a memory through a frame transmission processing device, into another area excluding a memory table for the frame data, when a multiprotocol of a frame-relay frame is converted into a multiprotocol of the AAL5 frame.The frame-relay frame transmission circuit performs retrieval in the connection table and obtains the shift size by which the frame is to be shifted from the top address of a frame buffer. Then, the circuit searches the frame buffer, and transmits the frame buffer address with the shift information to a processor bus interface. The processor bus interface transmits the received frame to the address in the DMA transmission process.

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Finland Office Action issued Nov. 9, 2004.

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