Release Notes PN 93000159_L1P
				 Digi RealPort

				 Version 2.4.3
			   SCO OpenServer Release 5.x
			Software Package PN 40001044_K1P
				   6/06/2001


	  CONTENTS
	  Section      Description
	  1	       Intro
	  2	       Supported Products
	  3	       Enhancements
	  4	       Bug Fixes
	  5	       Known Limitations
	  6	       History
	  7	       Notes


	  1. INTRO

	  The RealPort driver is a set of  TCP	network	 drivers  that
	  provides  real tty's functionality for Digi's	PortServer and
	  Etherlite product line.


	  2. SUPPORTED PRODUCTS

	      PortServer
	      PortServer II
	  And possible future products:
	      PortServer III
	      PortServer Lite
	      Etherlite	(with PortServer firmware)
	  The general term PortServer can mean any of the units	listed
	  above.


	  4. ENHANCEMENTS

	  A man	page for ditty has been	added. New unit	types such  as
	  PortServer  III  can	be  used.  The fastbaud	table has been
	  extended to support baud rates as high as 921600.


	  4. BUG FIXES

	  Under	SCO Merge, if a	line control command was sent while  a
	  break	 was  in progress, a extra break would accidentally be
	  generated.  This has been fixed.


	  5. KNOWN LIMITATIONS

	  The driver sends a SIGHUP to the controlling terminal	when a



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	  network  connection  has  been broken.  A process that is no
	  longer part of the process group may not receive the SIGHUP.

	  If the network  connection  is  lost	between	 the  RealPort
	  driver  and the PortServer unit, it may take several minutes
	  before communications	can be re-established with the unit.

	  The default TCP port for RealPort units is 771.   This  port
	  is  officially reserved for rtip.  If	you are	using rtip you
	  will need to configure your units and	RealPort driver	to use
	  a  different	TCP  port.   See  the NOTES sections below for
	  information on how to	do this.

	  The only way to change the  configuration  is	 to  reinstall
	  RealPort.   Digi recommends configuring extra	units to allow
	  for future expansion.


	  6. HISTORY

	  07/31/2000 SCO OSR5 2.4.2

	  Under	 certain  conditions,	the   driver   would   receive
	  continuous  update  packets  from  the  PortServer unit that
	  would	cause unnecessary network traffic.


	  02/01/2000 SCO OSR5 2.4.1

	  Ports	not accessible problem fixed.


	  7. NOTES

	  To configure a PortServer II and RealPort to use a TCP  port
	  other	 than  771,  follow  these  steps.   For this example,
	  assume you want to change to TCP port	3000.

	  To configure a PortServer II,	login  to  the	PortServer  as
	  root,	 run  the  command  "set  config  realport=3000", then
	  reboot the PortServer.  See the PortServer documentation for
	  more information.

	  To configure RealPort	edit the file  /etc/rc2.d/S86ncxa  and
	  add  " -p 3000 "  just  before  the  "&"  at	the end	of the
	  appropriate ncxd command line, then reboot the system.   For
	  example, the line might look like this after editing:

	      /etc/ncxd	-d /dev/cts0 -n	portservA -p 3000 &

	  Each ncxd command line in S86ncxa  has  the  IP  address  or
	  hostname  of	the  PortServer,  so you can associate command
	  lines	to PortServers.	 The PortServer	and the	 corresponding
	  ncxd command must both use the same TCP port number.

	  The fastbaud table of	substitute baud	rates is now:



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	  0 - 0
	  50 - 57600
	  75 - 76800
	  110 -	115200
	  134 -	131657
	  150 -	153600
	  200 -	230400
	  300 -	460800
	  600 -	921600
	  1200 - N/A
	  1800 - N/A
	  2400 - 2400
	  4800 - 4800
	  9600 - 9600
	  19200	- 19200
	  38400	- 38400











































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