H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/24
H04Q 3/00 (2006.01) H04L 12/56 (2006.01)
Patent
CA 1233225
- 23 - TRUNK FOR PACKET SWITCHING Abstract Fair and fast service to a plurality of channels served by packet switches at nodes interconnected through a common carrier facility is achieved by controlling the quantity of data sent from any one channel to another. When data arrives at a node from a channel, the channel address is entered in line in the first of two channel address queues and the data is entered in a separate data queue. Each channel address is read from the first queue, a predetermined number of data bytes is read from the corresponding data queue and sent in a frame to a distant node. Thereafter, the channel address is entered at the end of the second, lower priority queue. The frame may have data bytes from other first queue channels but the frame length is limited either by a predetermined number of bytes or when no more channel addresses remain in the first queue. When no channel addresses remain in the first queue, a new frame is started by reading a channel address from the lower priority second queue. A frame may have data from a data queue corresponding to a channel address in the second queue followed by data from a data queue corresponding to a channel in the higher priority first queue.
485322
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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