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