1999/1/14

_______________________ ComOS 4.0.3 Release Note for PortMaster 4



The new Lucent Remote Access (formerly Livingston Enterprises) 
ComOS(R) 4.0.3 software is now released for the PortMaster(R) 4
Integrated Access Concentrator.  This release is provided at no charge
to all Lucent customers.  This release note documents bugs fixed
between releases ComOS 4.0 and ComOS 4.0.3 on the PortMaster 4.

This release note applies only to the PortMaster 4.

Before upgrading, thoroughly read "Upgrade Instructions."



_______________ Contents

Bugs Fixed in ComOS 4.0.3
New Features in ComOS 4.0.3
Upgrade Instructions
Technical Support



_______________ Bugs Fixed in ComOS 4.0.3

The following bugs have been fixed in ComOS 4.0.3.

	Improved Modem Support

The same improvements made on the PortMaster 3 in ComOS 3.8.2 are
now part of ComOS 4.0.3.

* A timing problem with V.32 modems is fixed.
* A rate renegotiation and retrain issue with U.S. Robotics (USR)
  V.90 modems is fixed.
* A disconnect problem that occurred when V.90 falls back to V.34 is
  fixed.
* A timing problem with LT WinModems is fixed.
* A USR V.90 "No Connect" problem is fixed.
* A latency problem is fixed, improving ping times and reducing game latency.
* A V.34 renegotiation issue is fixed (including the upstream part of
  V.90 and K56flex).
* An A-law rate renegotiation problem is fixed.
* The LAPM retransmitter in V.90 is improved.


	European PRI Net5 Layer 2 Bug Fixed

When using the Net5 ISDN switch type, the PortMaster 4 now attempts to
activate Layer 2 if it is inactive during a dial-out attempt or when an
inbound call arrives.

In previous releases, if a Net5 ISDN switch initiated a Layer 2
inactive state, the PortMaster 4 did not activate Layer 2 again before
attempting an outbound call, and the call failed.  Likewise, if Layer 2
was down and an inbound call arrived, the PortMaster 4 did not
activate Layer 2 and did not answer the call.



_______________ New Features in ComOS 4.0.3

No new commands or features have been added in ComOS 4.0.3.



_______________ Upgrade Instructions

You can upgrade your PortMaster 4 using PMVision 1.2, pmupgrade 4.0 from
PMTools, or using the older programs pminstall 3.5.3, PMconsole 3.5.3, or
PMconsole for Windows 3.5.1.4, or later releases.  You can also upgrade
using TFTP with the "tftp get comos" command from the PortMaster command
line interface.

*** CAUTION!  If the upgrade fails, do NOT reboot!  Contact Lucent  ***
*** Remote Access Technical Support without rebooting.  	    ***

The upgrade process on the PortMaster 4 erases the configuration area
from nonvolatile memory and saves the current configuration into
nonvolatile memory.   Never interrupt the upgrade process, or loss of
configuration information can result.  This upgrade does not otherwise
affect your stored configuration in the PortMaster 4.

The installation software can be retrieved by FTP from
ftp://ftp.livingston.com/pub/le/software/, and the upgrade image
can be found at ftp://ftp.livingston.com/pub/le/upgrades:

ComOS		Upgrade Image	Product
_________	_____________	_____________________________________
4.0.3		pm4_4.0.3	PortMaster 4

________________________________________________________________________


	Copyright and Trademarks

Copyright 1999 Lucent Technologies. All rights reserved.

PortMaster, ComOS, and ChoiceNet are registered trademarks of Lucent
Technologies, Inc. RADIUS ABM, PMVision, PMconsole, and IRX are
trademarks of Lucent Technologies, Inc.  All other marks are the
property of their respective owners.


	Notices

Lucent Technologies, Inc. makes no representations or warranties with
respect to the contents or use of this publication, and specifically
disclaims any express or implied warranties of merchantability or
fitness for any particular purpose. Further, Lucent Technologies, Inc.
reserves the right to revise this publication and to make changes to
its content, any time, without obligation to notify any person or
entity of such revisions or changes.


	Contacting Lucent Remote Access Technical Support

Lucent Technologies Remote Access Business Unit (previously Livingston
Enterprises) provides technical support via voice, fax, electronic
mail, or through the World Wide Web at http://www.livingston.com/.
Please specify that you are running ComOS 4.0.3 when reporting problems
with this release.
 
Internet service providers (ISPs) and other end users in Europe, the
Middle East, Africa, India, and Pakistan should contact their
authorized Lucent Remote Access sales channel partner for technical
support; see http://www.livingston.com/International/EMEA/distributors.html.

For North and South America and Asia Pacific customers, technical
support is available Monday through Friday from 7 a.m. to 5 p.m. U.S.
Pacific Time (GMT -8).  Dial 1-800-458-9966 within the United States
(including Alaska and Hawaii), Canada, and the Caribbean, or
1-925-737-2100 from elsewhere, for voice support. Otherwise, fax to
1-925-737-2110, or send email to support@livingston.com
(asia-support@livingston.com for Asia Pacific customers).
