These pages currently document DNAS (DECserver
Network Access Software) V2.4 and later. These
versions dropped support for many of the "classic"
DECserver models:

  Model Name           Image Name     Last F/W   In kit      Notes
  -------------------  -------------  --------   ---------  ----------------------
  DECserver 90L        None                                   ROM-based firmware, not upgradable
  DECserver 90TL       MN1ENG         1.1C                    For models with 1MB of RAM
  DECserver 100        PS0801ENG      2.0 BL23
  DECserver 200/200MC  PR0801ENG      3.3
  DECserver 250        DP0601ENG      2.0
  DECserver 300        SH1601ENG      2.2C                    Limited TCP/IP support
  DECserver 500/550    DS5node-name   2.2                     Modular, host-based configuration
  DECserver 700-08     WWENG1         1.1C                    For models with 1MB of RAM
  DECserver 700-16     WWENG1         1.1C                    For models with 1MB of RAM

For models where there is a "Last F/W" version shown,
the distribution kits, documentation, VMSINSTAL kits,
release notes and the downloadable firmware images can
be found in the "Pre-DNAS DECserver Models and Firm-
ware" directory.

Hardware documentation for many older DECserver models
can be found on Bitsavers, in particular:
https://bitsavers.org/pdf/dec/ethernet

Additionally, a number of other companies also sold
LAT-compatible terminal servers or LAT software pack-
ages, either under license or by reverse-engineering 
the LAT protocol. These are mentioned here just to 
point out that they exist - I have no information on 
hardware, software, firmware or documentation for any 
of them:

  Able Computer
  Chase Research (EU)
  Cisco
  Communications Research Group
  Datability
  Emulex
  Equinox
  General DataComm
  Hughes LAN Systems
  Infotron Systems
  Interlink
  KEA Systems
  Lantronix
  McData
  Meridian Technology
  Racal InterLan
  WRQ (later Attachmate)
  Xylogics
  Xyplex