Hybrid switching system for a communication node

Details Hybrid switching system for a communication node Hybrid switching system for a communication node

1991-04-12

1993-10-05

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

H04L 1256, H04L 1250

Patent

active

052512061

ABSTRACT:
The hybrid packet and circuit switching system allows merging of packet and circuit traffic from user interface modules on a TDM bus and transfer of packet information from one module to another module or the exchange circuit information between modules. Circuit exchanges or packet transfers are performed synchronously on the TDM busses in bursts of period T, with each burst comprising a fixed number of bytes. The bursts are switched by switch 1. A routing indication common to the packet and circuit bursts is used for controlling the switching of the bursts by the switch 1. The indication is performed by piggy backing the target module address for the circuit bursts, as well as for the packet burst, with the data bursts. Marking tables needed for the circuit burst allocation are located in the user interface modules.

REFERENCES:
patent: 4413337 (1983-11-01), Dauphin et al.
patent: 4862451 (1989-08-01), Closs et al.
patent: 4975695 (1990-12-01), Almond et al.
Ninth International Conference on Computer Communication, Nov. 1988, North-Holland Amsterdam(NL), pp. 61-65; F. Barnabei et al, "A Hybrid Switching Exchange for Broadband Communications".

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