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Integrated voice/data network

  • US 4,665,514 A
  • Filed: 08/02/1985
  • Issued: 05/12/1987
  • Est. Priority Date: 08/02/1985
  • Status: Expired due to Term
First Claim
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1. A data switching network comprisingat least one packet switching node containing a packet switch,at least one remote transmission site and data transmission means between the remote site and switching node, said remote site havingmeans for receiving digitized voice and data samples from a plurality of incoming digital channels on each recursive scan of the channels,means responsive to the receiving means for detecting active and idle data intervals on the incoming channels,means responsive to the detecting means for dynamically compressing the digitized voice samples in an instant scan of samples so that the instant data samples and compressed voice samples fit into a fixed size data block, each data block containing logical channel numbers for the digitized voice and data samples assigned to each incoming channel at the beginning of an active interval, and the samples,means for transmitting the data blocks to said switching node, said packet switching node further comprisingmeans at an input side (R section of LTI) of the switching node for receiving the data blocks and containingmeans for separating the samples associated with different logical channel numbers,means for attaching packet headers containing a switch routing address to the separated samples to form packets,means for transmitting the packets to the switch,a plurality of means at an output side (T section of LTI) of the switch for receiving packets from the switch, and containingmeans for stripping away the packet headers,means for reformatting the digitized voice and data samples into said fixed-size data blocks, andmeans for transmitting the data blocks to another switching node or remote transmission node.

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