Product:	WANPIPE (tm) Multiprotocol WAN Router
Release:	2.4.2
Platform:	Linux Operating System
Document:	Release Notes
Date:		February 21, 1997
Author:		Gene Kozin, 74604.152@compuserve.com
Copyright:	(c) 1995-1996 Sangoma Technologies Inc.  All Rights Reserved.

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COPYRIGHT AND LICENSING INFORMATION

This product is copyrighted intellectual property of Sangoma Technologies Inc.
It is distributed under the Limited Use License Agreement.  This means that
you can NOT re-distribute (neither as a whole nor as a part) and/or modify it
without prior writen consent from Sangoma Technologies Inc.

Full text of the Limited Use License Agreement can be found in

	/usr/lib/wanpipe/LICENSE



INTRODUCTION

Sangoma's WANPIPE (tm) is a server-based muliprotocol WAN routing software
that together with Sangoma's Synchronous Data Link Adapter (SDLA) provides PC
connectivity to various synchronous communications links, including frame
relay, PPP, X.25, SDLC, etc.  Please read WANPIPE User's Manual for more
information and installation instructions.

WANPIPE User's Manual can be found in /usr/lib/wanpipe/MANUAL (ASCII text
format) or in /usr/lib/wanpipe/HTML directory (HTML format).

This software is available for downloads via the Internet free of charge.
The latest version can be found in /pub/linux directory on our anonymous FTP
server (ftp.sangoma.com).  If you are using WWW browser to get on the
Internet, use URL ftp://ftp.sangoma.com/pub/linux/wanpipe.tgz

Information on product updates and bug fixes can be found in /pub/technote
directory on the FTP server. Read INDEX file for more information.

For general inquiries and purchase ordering please contact Sangoma
Technologies Inc. by

	Hotline:	1-800-388-2475	(USA and Canada, toll free)
	Phone:		(905) 474-1990
	Fax:		(905) 474-9223
	E-mail:		dm@sangoma.com	(David Mandelstam)

For technical questions and/or comments regarding this product please send
e-mail to 74604.152@compuserve.com.



NEW IN THIS RELEASE

 o Added LMI and Q.933 frame relay link management options for the S508 card.


NEW AND OBSOLETE FILES

The following files has been added to the distribution:

	/usr/lib/wanpipe/src/tools/sdlald.c	SDLA loader source code
	/usr/lib/wanpipe/src/tools/flipcfg.c	FLIP configurator source code
	/usr/lib/wanpipe/src/tools/spppcfg.c	SPPP configurator source code
	/usr/lib/wanpipe/src/tools/Makefile	make script



KNOWN BUGS AND LIMITATIONS

 o Current WANPIPE release support the following WAN protocols:

	Frame relay
	Synchronous PPP (HDLC framing)

 o S502 frame relay firmware supports only T1.617 Annex D link management
   (no LMI and/or Q.933).

 o WANPIPE drivers and utilities are pre-compiled for Linux 2.0.0
   (ELF-format).  If you are using different kernel version and/or a.out
   executable format, you MUST rebuild WANPIPE using build script (see
   WANPIPE User Manual for more information).

 o WANPIPE is not compatible with development kernels from 1.3.70 to 1.3.99.

 o Linux kernels starting with 1.3.77 have built-in frame relay support which
   includes drivers for Sangoma's S502E and S508 adapters.  They were
   developed independently by Michael McLagan of Innovative Logic Corp.
   (mmclagan@invlogoc.com) and are supported by the author.  Please contact
   Mike for more information.

All other bugs and limitations of this release are documented in the User's
Manual as product's features.  If you find new ones, please let me know and
I'll include them in the manual too. ;-)



REVISION HISTORY

2.4.2   February 21, 1997
-------------------------
 o Fixed bug in receive routine for Syncronous PPP.

2.4.0	December 10, 1996
-------------------------
 o Includes WANPIPE tools source code.

2.3.0	October 17, 1996
------------------------
 o ELF-based distribution pre-compiled for Linux 2.0.0.
 o All shell scripts use meta-configuration file /etc/wanpipe.rc to locate
   product components. This allows to make WANPIPE relocatable, i.e. place
   it in directory other than /usr/lib/wanpipe.
 o Miscellaneous bug fixes.

2.2.0	July 16, 1996
---------------------
 o Compatible with Linux 2.0.x kernels.
 o Added uninstall script.
 o User's Manual is now available in HTML format.

2.1.0	June 20, 1996
---------------------
 o Added synchronous PPP protocol module (SPPP).
 o Added support for the new S503 adapter.
 o WANPIPE modules are more tightly integrated through common configuration
   and initialization scripts.  I.e. single command is now used to bring up
   or shut down WANPIPE.
 o Fixed a problem with FLIP driver timing out when executing adapter commands
   on fast machines (Pentium-133, etc.).  SDLA driver now provides hardware-
   independent API for protocol modules to execute adapter commands.
 o Fixed a re-entrancy problem in FLIP driver causing corruption of adapter
   mailbox data.
 o Changed an interface between SDLA driver and protocol-specific modules to
   allow more flexibility, standardize module binding, etc.  Protocol module
   binding is now performed by sdlald utility using SDLA driver IOCTL.
 o Changed SDLA driver API to allow new functionality and to streamline the
   old one.
 o Includes latest versions of Sangoma Frame Relay firmware.

2.0.0	May 1, 1996
-------------------
 o Added interactive installation and configuration scripts.
 o Added System V -style initialization scripts allowing automatic WANPIPE
   start-up on system boot.
 o SDLA driver can now select memory window address dynamically.
 o SDLA driver now fails hardware initialization if memory test returns zero.
 o SDLA driver now registers I/O ports with operating systems properly, so
   they appear in /proc/ioports file.
 o Fixed a bug in SDLA driver interrupt routine.  SDLA hardware interrupt
   is now acknowledged before calling protocol driver's ISR.
 o S508 frame relay firmware has been updated.  This fixes the problem with
   missed interrupts.
 o SFM file format has been changed.

1.0.0	February 12, 1996
-------------------------
 o Final release.
 o Added support for Linux 1.3.0 kernel.
 o Uses updated version of the S508 frame relay firmware.

0.9.0	December 21, 1995
-------------------------
 o Added support for the S508 Frame Ralay firmware.
 o Fixed a bug in SDLA interrupt handleri routine.
 o FLIP driver is implemented as a network device.
 o Added SNAP encapsulation for routed frames (e.g. IPX) in FLIP driver.
 o Autodetection routine verifies adapter I/O port option before performing
   autodetection to minimize the risk of corrupting other hardware, if wrong
   port address is specified.
 o SDLAIO_DOWN ioctl will now fail if SDLA is bound to protocol driver.
 o Allow to open a FLIP interface even if its DLCI is not active, just print a
   warning message.  This solves a problem with ifconfig unable to configure
   an interface until network is actually up.
 o Limit a number of adapter call retries in FLIP driver.  This eliminates a
   danger of looping forever in case of modem errors and such.
 o Prevent FLIP module from being unloaded, ports from being reset and network
   inrfaces from being removed if at least one interface is active.
 o Added capability to autodetect adapter type.
 o Added limited support for the frame relay switch emulation mode (Access
   Node) to allow back-to-back connections.

0.0.1	October 12, 1995
------------------------
 o Initial version.

