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Digital interface unit

  • US 4,943,978 A
  • Filed: 01/17/1989
  • Issued: 07/24/1990
  • Est. Priority Date: 11/27/1985
  • Status: Expired due to Fees
First Claim
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1. Digital communication apparatus for use with a communications link, said communications link having a message protocol which includes a free text message protocol, said digital communications apparatus allowing transfer of data, over said communications link, between digital communications terminals of a predetermined type having a fixed format message protocol which is incompatible with the message protocol of said communications link, which comprises:

  • first means, adapted to receive a fixed format digital message having a fixed format message protocol from one of said digital communications terminals of said predetermined type, for packing said fixed format digital message into a free text digital message having a free text message protocol compatible with the free text message protocol of said communications link; and

    second means, adapted to receive a free text digital message having a fixed format digital message contained therein from said communications link, for unpacking said fixed format digital message from said free text digital message, said second means being adapted to transmit said fixed format message to one of said digital communications terminals of said predetermined type.

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