Switched communication network with bandwidth managers for achieving end-to-end data compression during transport
First Claim
1. A switched telecommunications network comprising:
- a plurality of interconnected switching devices and a plurality of bandwidth management devices arranged to provide access to the switching devices providing a plurality of switching networks, each switching network including means for switching a respective type of data,the plurality of bandwidth management devices including a transmitting bandwidth management device arranged to compress data from a transmitting user for transmission over the network, and a receiving bandwidth management device arranged to de-compress received compressed data for transmission to a receiving user, wherein the transmitted data remains in compressed form while being switched and transmitted by the network,means for compressing data prior to being multiplexed for transmission to a switching device constituting a local exchange, the multiplexed data being demultiplexed at the local exchange, andmeans at the local exchange for de-multiplexing multiplexed data wherein each type of data obtained form the multiplex is supplied to respective networks in compressed form.
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Accused Products
Abstract
A switched telecommunications network includes a plurality of interconnected switching devices and a plurality of access bandwidth managing devices. A transmitting access bandwidth managing device is arranged to compress user originated data for transmission over the network to a receiving access bandwidth managing device. The receiving access bandwidth managing device is arranged to de-compress the received data for transmission to a receiving user. However, while the data is being transmitted through the network, it remains in compressed form, thereby minimizing the introduction of distortion and loss. Compressed data is transmitted through standard switching equipment by adding blank data to switched words, without decompressing the actual compressed data itself.
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Citations
9 Claims
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1. A switched telecommunications network comprising:
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a plurality of interconnected switching devices and a plurality of bandwidth management devices arranged to provide access to the switching devices providing a plurality of switching networks, each switching network including means for switching a respective type of data, the plurality of bandwidth management devices including a transmitting bandwidth management device arranged to compress data from a transmitting user for transmission over the network, and a receiving bandwidth management device arranged to de-compress received compressed data for transmission to a receiving user, wherein the transmitted data remains in compressed form while being switched and transmitted by the network, means for compressing data prior to being multiplexed for transmission to a switching device constituting a local exchange, the multiplexed data being demultiplexed at the local exchange, and means at the local exchange for de-multiplexing multiplexed data wherein each type of data obtained form the multiplex is supplied to respective networks in compressed form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of transmitting data through a switched network via bandwidth managing devices, the method comprising the steps of:
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compressing user originated data at a bandwidth managing device prior to being multiplexed for transmission to a local exchange; transmitting said compressed data to a complementary bandwidth managing device, connected to a switching device, for de-multiplexing data incoming thereto; switching said compressed data through a plurality of switching devices providing a plurality of switching networks, each switching network switching a respective type of data; transmitting said switched compressed data to a receiving bandwidth managing device; and de-compressing said compressed data at the receiving bandwidth managing device wherein the multiplexed data is de-multiplexed at the local exchange and each type of data obtained from the multiplex is supplied to respective networks in compressed form.
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Specification