>...... The modem code in ComOS
>3.9b26 is the same modem code included in ComOS 3.8.2c2 for the
>PortMaster 3. This release note applies only to the PortMaster 3.
the modem code is indeed the same in the 3.9b26 as in 3.8.2c2 ? This would
mean you backed out the code in beta 22 right ?
and that all the modem code fixes listed later in the 3.9b26 notes are from
3.8.2 to 3.8.2c2 ?
>* Modem code fixes:
>
> - A downward spiraling upstream rate caused by an incorrect Link
> Access Procedure for Modems (LAPM) error check is fixed.
>
> - Rate reduction due to LAPM errors has been made less sensitive.
>
> - In the presence of LAPM retransmission errors, the modem code
> retrains to allow the link to adjust to a lower speed and improve
> throughput.
>
> - The number of disconnections from LAPM retrains within a retrain
> has been reduced.
>
> - The modem code now suspends LAPM transactions during any rate
> changes or retrains and thereby eliminates some connection
> failures, connections without error control, and some
> disconnections.
>
> - U.S. Robotics (USR) Telepath V.34 modems can now establish
> LAPM error correction. Previously under certain conditions, the
> modem was choosing too high a connection rate and was unable
> to establish LAPM error correction. The modem code now detects
> these conditions and forces the connection speed down by one rate
> to allow LAPM to be negotiated.
>
> - For all modems, retrain detection has been improved to prevent some
> client disconnections.
>
> - For modems with Rockwell Semiconductor Systems (RSS) K56flex
> chipsets, fast rate changes now work properly. Previously, a retrain
> was forced after a rate change. (RSS is now Conexant Systems Inc.)
>
> - A NO EC (no error control) connection problem with Cirrus Logic
> modems is fixed, and overall performance with Cirrus Logic
> modems is improved. Cirrus Logic modems are now supported by
> Ambient Technologies.
>
> - The number of rate renegotiations with USR/3Com and Cirrus
> Logic modems has been reduced because ComOS now allows
> the client modem to specify spectral shaping.
>
> - USR/3Com modem connections are now more reliable.
>
> - Rate renegotiation and retrain problems with USR/3Com and Rockwell
> HCF modems are fixed.
>
> - Connectability with USR/3Com and Rockwell HCF modems and
> LT Winmodems is improved.
>
> - Motorola SM56 modems can now connect with V.90.
>
> - A V.90-to-V.34 fallback problem, which can result in a disconnection,
> is fixed by earlier V.34 detection.
>
> - A-law V.90 connectability is improved.
>
> - K56flex connectability is improved by an increase in a K56flex timeout.
>
**********************************************************************
Mike Tancsa * mike@sentex.net
Sentex Communications Corp, * http://www.sentex.net/mike
Cambridge, Ontario * 519 651 3400
Canada *
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