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- 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.
-
-