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366s_102.txt
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1997-02-18
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100 lines
ZyXEL Communications Corp.
edited by Manfred Recla
February 3, 1997
Release Note on ZyXEL's "G3" Modem series (= U-288R/RE, U-336E/S)
Version 1.02
=================================================================
1. Fix modem bugs :
-------------------
* Remote digital loop back may fail for U-336S model:
If we initiate RDL or RDLST from the LCD panel, it will fail .
* leased line mode:
When the line is broken under abnormal condition after a long period
of time the modem may fail to restart handshaking.
* command ATI0 response:
The modem responses "2864" in old version.In new version, it will
response according to different modem type:
U-288RE will response "33601"
U-336R will response "33602"
U-336S will response "33603"
U-336E will response "33604"
* In testing mode, the modem will not set pin 25 of RS232 active.
* MNP4,MNP5 mode:
Sometimes it can't send or receive data in MNP4,MNP5 mode.
* V.32bis and ZyX-19k2 mode:
If the initial setting contains "Q2&K3" and it connects by ZyX-19k2
or V.32bis mode, the modem will hang after transmit a few characters.
2. Change the modem factory default settings:
---------------------------------------------
S6 is changed to 10 for Russia.
S7 is changed to 45 for Taiwan (rack).
3. Improve performance:
-----------------------
* Improve V.34 performance.
4. Known Bug:
-------------
* Software flow control problem:
The modem will lose data in software flow control mode at high
connect speed.
* AT&Wab, Remote write profile functuion error. Remote can't reset from
profile b.
---------------------------------------------------------------------------
January 16, 1997
Release Note on ZyXEL's "G3" Modem series (= U-288R/RE, U-336E/S)
Version 1.01
=================================================================
1. Add new features:
--------------------
* V.34bis 33600 bps, 31200 bps.
2. Fix modem bugs :
-------------------
* V.32bis mode connection:
Sometimes it can't sense the abnormal carrier drops.
* Special dialing feature:
Modem does not finish dialing of numbers specified after P modifier
and hangs for a time specified in S7 register. For example when
"ATDT9WP8W10-886-3-578-7045" is entered, modem will report "NO CARRIER"
* Ring false alarm:
When pulse dial by the telephone set connected to modem, the modem
will report ring.
* Synchronous mode: (&M3)
The modem will not give the answer tone when auto answer.
* Compatibility:
.Multi-Auto connection:
The modem can't connect with Motorola Power 288 V.32bis mode .
.Fail to connect at error control mode:
Sometimes the modem will connect at none error control mode with
Rockwell chip set based modem.
3. Improve performance:
-----------------------
* Improve V.34 performance.
* Improve answer tone detection sensitivity.
* Improve the modem realibity.
4. Known Bugs:
-------------
* Software flow control problem:
The modem will lose data in software flow control mode at high connect
speed.
* AT&Wab, Remote write profile functuion error. Remote can't reset from
profile b.