ZyXEL Communications Corp.
                                                      edited by Manfred Recla
                                                                Jan. 12, 1997

           Release Note on ZyXEL omni.net Version 1.20
           ===========================================

1.The firmware's file names for various switch type are as follows:

        FILENAME             SWITCH TYPE
   1.1  "MP128E.120"  ------ DSS1  (EuroISDN, Taiwan, Japan)
   1.2  "MP128G.120"  ------ 1TR6  (for old national German ISDN only)
   1.3  "MP128K.120"  ------ Korea (for Korea only)
   1.4  note: for USA the firmware version 1.20 will not be released due
        to some other items which will be implemented in the next release.

2.Fixed the Bugs:
=================
2.1    E71 mode doesn't work.
2.2    Set AT&D0 and lower DTR TA can't response to any AT command.
2.3    In CAPI mode, off hook phone 2 will get busy tone no matter if there
       is a free channel or not.
2.4    Set DTE port 1 baud rate = 9600bps, press 't' or 'T' instead of press
       'a' or 'A' as the first character then press D/V key, data terminal
       will show garbage instead of OK.
2.5    TA didn't ignore the SETUP message with a CR value that is using.
2.6    S register #5 doesn't work.
2.7    Set improper country code (smaller than 217) will cause TA load
       incorrect RING frequency and cadence.
2.8    Sometimes phone 1 and phone 2 will interfer each other, especially
       when one of them is a modem call.
2.9    When TA received "ATD12345;" it should ignore the ending ';'.
2.10   AT*C1~C3 should response with "ERROR".
2.11   Some people testing TA and RVS-COM Lite Ver 1.22 (or higher) reported
       that sometimes there are problems when sending fax.
2.12   Let s0>=3, sometimes TA disconnects before beginning answering call.

3. Newly implemented features
=============================
3.1    Keypad protocol for DSS1 version:
        Presently, the following countries support this function:
                250     Sweden
                238     Taiwan
                236     Italy
3.2    Release D channel Layer 2 Link:
        When S121.4 is cleared (=0, the default setting), if all DTE port(s)
        and PHONE device(s) are idle for more than 10 seconds, TA will
        actively send "DISC" to release D channel layer 2 link if layer 2
        link is still engaged. (Note that this feature is available only on
        DSS1 version.)

4.Known bugs
============
4.1    CAPI:
4.1.1  Don't support T.30 (G3 fax)
4.2    E71 mode:
        While DTE speed slower than 38400bps, E71 mode auto-detection is
        possible only when AT commands are typing in upper case.


============================================================================



           Release Note on ZyXEL omni.net Version 1.19          Sep. 8 ,1997
           =============================================

1.The firmware's file names for various switch type are as follows:

        FILENAME             SWITCH TYPE
   1.1  "MP128E.119"  ------ DSS1
   1.2  "MP128G.119"  ------ 1TR6 (Germany only)
   1.3  "MP128K.119"  ------ Korea(Korea only)

2.Fixed the Bugs:
=================
 2.1  Sometimes,TA will reset while there is an incoming analog phone call.

==============================================================================


           Release Note on ZyXEL omni.net Version 1.18          Aug. 15,1997
           =============================================

1.The firmware's file names for various switch type are as follows:

        FILENAME             SWITCH TYPE
   1.1  "MP128E.118"  ------ DSS1
   1.2  "MP128G.118"  ------ 1TR6 (Germany only)
   1.3  "MP128K.118"  ------ Korea(Korea only)
   1.4  "MP128A.118"  ------ USA

2.Fixed the Bugs:
=================
 2.1  When 1B channel is connected data and transfering file ,then off-hook
      will get noise and can not detect the digit that is pressed.
 2.2  For UK , the ring cadence is incorrect.

3.Newly implemented features
============================
 3.1 CAPI 2.0
     CAPI supports software fax and voice function.
      If the application is RVS-COM 1.20 ,TA can support RVS-COM AT command
      software fax.


==============================================================================

           Release Note on ZyXEL omni.net Version 1.15          May. 20,1997
           =============================================

1.The firmware's file names for various switch type are as follows:

        FILENAME             SWITCH TYPE
   1.1  "MP128E.115"  ------ DSS1
   1.2  "MP128G.115"  ------ 1TR6 (Germany only)
   1.3  "MP128K.115"  ------ Korea(Korea only)

2.Fixed the Bugs:
=================
 2.1 For Italy, the TA can not recognize the Bearer Capability I.E. of SETUP
     message for V.110 connection while without Low Layer Compatibility. the
     TA should answer these V.110 data call and then connect according to the
     contents of Bearer Capability I.E.
 2.2 DOVBS for bundle call can not work.
 2.3 In CAPI mode, the TA should ignore data compression (AT&K44).
 2.4 Issue 'AT&D1, while sencond DTR off-on transition ,TA can not dial out.

3.Newly implemented features
============================
 3.1 CAPI 2.0
  3.1.1 The CAPI 2.0 supported Layer 3 protocols
        X.75 Transparent,
        T.70 (for T-Online),
        ISO8208 (for European File Transfer), and
        Bit Transparent (for some S/W G3 Fax application).
  3.1.2 Two applications on the same PC can work concurrently, each using
        one of the two B-channels.
 3.2 CCP auto-detection for Win95 MPPC.


=============================================================================

           Release Note on ZyXEL omni.net Version 1.14            May. 7,1997
           =============================================

1.File name:
        FILENAME             SWITCH TYPE
       "MP128K.114"  ------ Korea only

2.Newly implemented features
============================
 2.1 For Korea version , the "ZyXEL" string is replaced by "NTK".


=============================================================================

                Release Note on omni.net Version 1.13             Mar, 27, 1997

Fixed Bugs:
1  When a V.120 call comes in and the answerer default to X.75 call will
   connect correctly but answer side will transmit packet with max lenght
   up to 2048 (X.75 default value) which causes some calling V.120 devices
   overflow.
2  "Any key" function works abnomally. Dial out, ring back tone is ringing,
   first key pressed can't abort this call.
3  When V.120/X.75 V.42bis negotiation, XID sends garbage data at the end
   of V.42bis parameter group.
4  Incoming call bumping fail.
5  AT*G2 will dial CPN back rather than pre-stored number.
6  V.110 with software flow control will cause TA reset.
7  56K (AT&E1) is not worked in UK.
8  X.75/V.120 with 56K connection, if the packet is too large (ex, 2048
   "FF" pattern) HDLC transmitter wtachdog timer will time out and file
   includes this packet is impossible to be transmitted.
9  When connecting an PPP call into ISP, if TA answering an incoming
   global analog call then hang up, both analog call and data call will
   be disconnected simultaneously.

New Implementations:
1  For Korea, omni.net will automatically adapt codec to accept incoming
   analog calls.
2  No more support call bumping for V.120 and X.75. Call bumping is supported
   only for PPP now.
3  Busy tone for A/B adaptor
        s87.0 = 0 (default) send busy tone to phone 1 when disconnect.
              = 1 disable busy tone to phone 1 when disconnect.
        s87.1 = 0 (default) send busy tone to phone 2 when disconnect.
              = 1 disable busy tone to phone 2 when disconnect.
   This is useful when Answering machine is connected to A/B adaptor.
4  Support enbloc-sending for Isreal.


=============================================================================

        Release Note on omni.net Version 1.12                   Feb, 18, 1997

Fixed Bugs:
1  For Korea, link is never up.
2  For Korea, there is no dial tone.

NOTE: For European version, v1.12 is only for Korea.

New Implementation:
1  Comments on JAPAN version:
   This is new release of JAPAN version which is adapting from ETSI version
   with the following changes:
     1) without the support of X.75, CAPI, V.120 and V.42bis
     2) with full support of Feature Phone (like Omni TA128)


        Release Note on omni.net Version 1.11                   Jan, 17, 1997

Fixed Bugs:
1  Set baud rate as 19200/9600/4800/2400 bps, key in T<CR>AT<CR>...
   sequence there will be no response from TA.
2  V.120 & X.75 bad performance.
3  AT*HCn usage in on line qkref is wrong.
4  AT&F doesn't update AA LED status.
5  Help file (AT$) headings says help file is for F/W version v1.00.
6  AT&Vn shows no AT*GCn information.
7  ATCG layer 1 activation test fail (USA).
8  When switch type is AT&T point-to-point, sometimes layer 1 fail to activate.
9  On-line help doesn't say supporting STAC and DN (USA).
10 Set s50 >= 128 will cause TA reset.
11 When connect with Win95 enabling CHAP cause TA work improperly.
12 When switch type = NI1 callback function fail.
13 Can't enter S/N.

New Implementation:
1. Caller ID display for POTS ports.
   When telephone call is coming, if physical DTE port is not occupied
   by any logical DTE channels, Caller ID and Callee ID will be displayed
   on DTE port when s84.4=0.
2. S-Register explanation was removed from on line qkref in order to save
   8.4k bytes code space, so that the code space is enough to reserve all
   the features that had promised to support.
3. AT*GC1: 2 changes.
   (1). Compare Calling Party Number (CPN) with the stored numbers from the
        right digit to the left digit. So 8005552000 will match 5552000.
   (2). Based on the shorter one, so the CPN can be longer or shorter than
        the stored numbers.


        Release Note on Accura Version 1.10b                  Dec, 17, 1996

Fixed Bugs:

New Implementation:
1. This version is based on TA128 v2.00.
2. DN is supported from now on.