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US 5,303,236 AGranted
Signalling apparatus for use in an ATM switching system
AssigneeHitachi, Ltd.
InventorsMasao Kunimoto, Jiro Kashio, Makoto Mori, Shinobu Gohara
Life of this patent
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Abstract
A subscriber line signalling apparatus for use in an asynchronous mode communication system includes a switching circuit having a plurality of input terminals and a plurality of output terminals. The switching circuit selectively communicates fixed length information packets to an adaptation processing unit. The adaptation processing unit reassembles the fixed length packets to signalling frames, and transmits them to a frame processor.
Claims7
A communication system comprising:
- an aynchronous transfer mode switching means for selectively transferring fixed length input packets received from a plurality of input lines to one of a plurality of output lines selected in accordance with routing information appended to each of said input packets;
- signalling means operatively connected to one of said output lines of said switching means for converting at least one packet received from said switching means to a message block;
- and
- processor means operatively connected to receive said message block from said signalling means.
1 more element
A communication system comprising:
- an asynchronous transfer mode switching means provided with a plurality of pairs of input and output lines for selectively transferring fixed length packets received from said input lines to one of said output lines in accordance with routing information appended to each of said packets;
- signalling means connected to said switching means through one of said pairs of input and output lines for communicating fixed length packets with said switching means;
- and
- processor means operatively connected to said signalling means;
- said signalling means including,
- means for reassembling at least one packet received from said switching means through the output line of said one of pairs to a message block and for supplying said reassembled message block to said processor means, and
- means for segmenting a message block supplied from said processor means into at least one fixed length packet and for transmitting said packet to said switching means through the input line of said one of pairs.
4 more elements
A method of communicating signalling information comprising the steps of:
- switching signalling packets received from any one of input lines of a switching unit to a predetermined one of output lines of said switching unit by said switching unit;
- converting at least one signalling packet received from said predetermined output line to a message block by a signalling unit connected to said predetermined output line;
- and
- transferring said message block from said signalling unit to a data processing unit connected to said signalling unit.
1 more element
Dependencies are inferred from the claim text.