Release Notes
                          PN 93000454

               Digi DataFire SYNC Adapter Driver
                 Version 5.0.307.0, 08/14/2002

                    Microsoft Windows NT 4.0
                   Service Pack 5 and greater

                        Software Package
                          PN 40002251


  CONTENTS

  Section      Description
  -------------------------------
  1            Introduction
  2            Supported Products
  3            Known Limitations
  4            Additional Notes
  5            History


  1. INTRODUCTION

     This document describes the device driver that supports
     the Digi devices listed below. The driver is for use
     in the Microsoft Windows NT 4.0 environment and is
     compatible only with Service Pack 5 and greater.

     Refer to the following number when searching the Digi
     International Inc. Web site (www.digi.com) or the FTP
     site (ftp.digi.com) for the latest software package:

     40002251_<highest revision letter>


  2. SUPPORTED PRODUCTS

     Digi DataFire SYNC 2000 2P Adapter
     Digi DataFire SYNC 2000 4P Adapter
     Digi DataFire Sync/570i 2P PCI Adapter
     Digi DataFire Sync/570i 4P PCI Adapter


  3. KNOWN LIMITATIONS

     When configuring an adapter using the configuration wizard, if
     invalid input is entered and the back button is pressed, an
     error message might appear indicating that the input is
     invalid. Enter valid input before pressing the back button to
     suppress this warning and to back up the wizard.

     For PPP links, both sides of a connection must disconnect
     before they can be reconnected.

     When using the SDLC interface, the maximum BTU (Basic
     Transmission Unit) is limited to 521 bytes. This is a known
     limitation of the IBM SDLC link service provided in SNA
     Server. See the Microsoft SNA article, "Maximum BTU Limit for
     Dumb SDLC Interface," for more information.


  4. ADDITIONAL NOTES

     On-line help is available when you install the product.

     Installation documentation can be found at Digi's Web site,
     http://www.digi.com, or at Digi's FTP server, ftp://ftp.digi.com.


  5. HISTORY

     Version 5.0.307.0 (M1P)
     -----------------------
     CHANGES

        Removed support for AccelePort Xp, AccelePort RAS and DataFire RAS adapters
        Assigned new part number and released driver as new product

     BUG FIXES
        None

     Version 4.0.229.0 (L Release)
     -----------------------------
     BUG FIXES

        Fixed: DataFire Sync configuration dialog for X.25 does not show up. (#8068)
        Fixed: WanLinks driver does not remove keys from SERIALCOMM when uninstalled (#8412)
        Fixed: The DigiAsyn.sys driver is hanging in an endless loop (#7656)
        Fixed: Parity error detection failure with AccelePort Xp (#7542)
        Fixed: Microsoft FAX does not work with AccelePort Xp (#5702)
        Fixed: Unable to print with AccelePort Xp (#5081)
        Fixed: Multiple issues with E1/R2 parameter configuration (#7956, #7897)
        Fixed: The DigiAsyn.sys driver does not handle zero length read requests correctly.
        Fixed: Some timed-out writes are being inadvertently completed with STATUS_CANCELLED
        Fixed: Write timeout does not work when Write Complete When Sent option is enabled
        Fixed: If low latency is enabled, any attempt to open the port causes the system to
               completely lock up

        Updated DataFire RAS firmware to M release. Detailed information about firmware
        enhancements and bugfixes can be found in the DataFire RAS firmware Release Notes.

     Version 4.0.217.0 (L3P)
     -----------------------
     BUG FIXES

        Fixed: Caller DID option within Windows 2000 server is not working (#5576)
               Note: Fixed for AccelePort Xp only. Fixed for Windows NT 4.0 too.
        Fixed: E1/R2 GroupB and backward signalling range incorrect (#5653)
        Fixed: Add Channel Mapping option for DataFire RAS24/48/30/60 CT1 and PRI (#7380)
        Fixed: Driver does not start when installing L2P from scratch (#7582)
        Fixed: Ntperf reports same throughput on AccelePort Xp port at these baud rates
               - 1200 2400 4800 9600 19200 (7570)
        Fixed: AccelePort Xp fails the sndrcv test application (#7354)
        Fixed: Throughput problems with AccelePort Xp at 921kbps on Windows NT 4.0 (#5173)

     Version 4.0.214.0 (L2P)
     -----------------------
     BUG FIXES

        Fixed problem establishing a fax connection (#7220,#5702)
        Fixed serial printing errors (#7493)
        RasAudio.exe was missing from the build (#7234)
        Fixed DigiInf.dll load issue (#7231)
        Changed Sync2000 PLX9080 setup to initialize in PCI 2.1 mode.
	    Problem with modem country setting for E1/T1 cards (#5073 & #6376)
	    Port Assist Viewer does not display RAS30/60 boards in E1R2 mode (#5071)
	    Port Assist Viewer does not show ISDN layer 3 status (#3976)
	    Port Assist Viewer faults when clearing statistics (#2495)

     Version 4.0.210.0 (L1P)
     -----------------------
     This version was not released to the public.