Release Notes PN 93000444_C
			 Digi One TS, and PortServer TS 2/4 EOS
                           
				        82000747_F

				     August 16, 2002

INTRODUCTION

This is a production release of firmware for the Digi One TS and
PortServer TS 2/4.  These devices provide high-performance serial port
connectivity with added MEI support on first serial port, 802.3af
powered Ethernet, and 9-30V DC power. These devices support a 10/100
mbps Ethernet network interface, TCP/IP, Telnet, Reverse Telnet, SNMP,
PPP, SSHv2, PortBuffering, Ping-ARP, ADDP, DPA-Remote monitoring tool,
and Digi's patented RealPort software for COM or TTY port control
and management.
 
SUPPORTED PRODUCTS

    Digi One TS
    PortServer TS 2
    PortServer TS 4

ENHANCEMENTS
    
Packets sent to UDP port corresponding to raw TCP ports (default: 2100
+ port) will be sent to the serial port.  Packets from the serial port
can be configured to be sent to UDP hosts as well.  See the 'set
udpserial' and 'set udpdest' commands.

Connection methods can be disabled using 'set secureaccess' to turn
off unused or insecure connection methods.

The Telnet serial port extension, RFC 2217, is now available.

Ethernet speed and duplex settings are configurable with 'set
ethernet'.

Serial mark and space parity are now available in 'set line'.

The cpconf functionality from the command line is now also available
from the web user interface.

The firmware also incorporates some changes to reduce the latency of
packets transmitted over both the serial and network interfaces. These
changes are active when the 'optimize' setting in the 'set config'
command line is set to 'latency'.  The old behaviour is available with
the 'throughput' setting.

Another new feature in this firmware is RTS toggle.  When this feature is
enabled with 'set flow rts=toggle', it will cause RTS to be active when
data is transmitted and inactive otherwise.  The optional 'set flow'
settings, pre-delay and post-delay, determine the delays before and after
transmitting data that RTS is held active.
These values can be viewed with 'set flow show=rtstoggle'.

BUG FIXES
	
    - Turning bin=on continues to send telnet negotiation string on an 
      autoconnection
    - Memory leak when running Modbus protocol
    - If autoconnect fails, the unit prints "Connection failed" even when 
      verbose messaging is disabled
	
KNOWN LIMITATIONS
	
    - Latency optimization mode is not suited for high bandwidth applications.
  
ADDITIONAL INFORMATION

    - not applicable

HISTORY

93000444C:
2002-08-16
	82000747_F - August 2002 feature enhancements

    - Improved latency in new latency optimization mode
    - UDP to serial port connectivity
    - Secure access feature to disable insecure connection methods
    - RTS Toggle
    - RFC 2217, Telnet extension for serial port control
    - Configurable ethernet duplex and speed settings
    - Serial mark and space parity
    - cpconf support in web interface

93000444A:
2002-04-23
	82000747_A - First Release of firmware.

	This is the initial release of firmware for the Digi One
device server family. These devices provide high-performance serial
port connectivity with added MEI support on first serial port, 802.3af
powered Ethernet, and 9-30V DC power. These devices support a 10/100
mbps Ethernet network interface, TCP/IP, Telnet, Reverse Telnet, SNMP,
PPP, SSHv2, PortBuffering, Ping-ARP, ADDP, DPA-Remote monitoring tool,
and Digi's patented RealPort software for COM or TTY port control
and management.