LDE
Network data solutions, design, implementation & support
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Specialists in heritage protocols...


We have a highly experienced knowledge of legacy protocols and the technologies behind them and can provide the most suitable system solution for your needs, large or small.

Data Communications have advanced tremendously over the past 20 years from when transmission speeds of 1200bps over standard telephone lines were thought to be leading edge technology. Today we do not even blink when talking of 100mbps.

At Lde we have the expertise to handle not only current leading edge protocols and technologies, but the legacy protocols and technologies that remain the foundation of many applications in the oil distribution, aggregate, retailing, finance, airline and engineering sectors.

Legacy Protocols include:

  • IBM 3270, IBM 3770, IBM 3780, IBM 5250, IBM 3767

  • IBM BSC, IBM SDLC/SNA, IBM HASP, IBM QLLC

  • ICL C02, ICL C03, ICL 7502

  • Sperry UTS 200

  • Honeywell VIP, Honeywell/Bull 7800

  • Airline IPARS, ALC (P1024B), UTS (P1024C)

  • X.25, X.3, X.28, X.29, X.75

  • DEC VT52, DEC VT100, DEC VT220, DEC LAT

  • Videotex

  • Generic Binary Synchronous Communications (BSC)

    • Current Protocols include:

  • TCP/IP

  • PPP

  • Frame Relay

  • SLIP

  • VIP

  • VoIP - Voice Over IP



    • Lde use and endorse diagnostic tools from