
       ********* Firmware Version 4.09h  Note *****************
						    Date:06/15/92

  New Change

  1. "W" has to detect 1.5 seconds continous dial tone.
     WAS : 3 seconds.

  2. Start restoral operation (lookback leased line) without disconnect
     dial-up line.
     Was : disconnect dial-up line.

     This change will only effect on PCB REV6, REV8 or modified REV9, REV10 and
     REV10A. Otherwise it will work as old way. Only U-1496 affected.


       ********* Firmware Version 4.10	 Note *****************
						    Date:06/23/92

  1. CPM ( Call Progress Monitering ) scheme changed for some country's PTT
     regulation.

  2. V.17 training procedure changed to quick ( short ) train. Reason for this
     change is to be compatible with most of 14400 fax machine.

    *** Note ***

     Firmware before 4.10 may not receive fax properly from version newer than
     4.10. Set bit 4 of s42 will force modem to use V.29 9600 to transmit fax
     for compatible with version before this version.

  3. In leased line operation if V.22bis handshaking fail modem will disconnect
     the line and restart handshaking.


  4. New features added

     Caller-ID and Distinct ring are added but only avaible on 1 Mega ROM code
     now.



       ********* Firmware Version 4.11	 Note *****************

						    Date:06/29/92

   1. Set bit 3 of s42 will disable the Escape function in answer mode.

   2. Bug fixed

      Leased line direct async mode ( without buffering ) handshaking fail.
      This bug fixed.


       ********* Firmware Version 4.12	 Note *****************

						    Date: 7/01/92


   1. Response corrected for +fdcc=?, +fdis=?.

   2. Response corrected for +frev?, +fmdl? . The response is the same as ATI
      issued.

   3. Support Quick Link II software now. Only at&f need for init string.

   4. Accept AT command after ;.
      Ex. atd1234;h0 .

      In this example modem will dial 1234 then hang up.

   5. Any non-digit nor modifier in the dialing string will be ignore and will
      not cause ERROR response.

   6. Disable showing "Dialing..xxxx" on terminal if Q1 or V0 is set.

   7. Clear ring count after 8 second with no ring coming has extend to 10
      second for catching incoming ring which has long pause between each ring.


       ********* Firmware Version 4.12b  Note *****************

						    Date: 7/06/92
   Bugs fixed

   1. Malfunction on V.25bis auto answering from version 4.12.

   2. When 108/2 = ON, modem did not turn on 106 to signal DTE that it
      is ready to enter the dialogue with the DTE.


   Performance improved

   1. Buffer 1 scan line before transmitting fax data. This will prevent data
      lost when transmitting a fax to a 14400 fax machine.


   New command added

   1. ATSr.b=n	 ----- Set or clear one bit of S register, others bit value
		       are not affected.
		       r = 0-49
		       b = 0-7
		       n = 0-1

		       Exp. : Set bit 5 of s38 ( disable MNP5 )

		       ATS38?
		       000
		       OK
		       ATS38.5=1
		       OK
		       ATS38?
		       032
		       OK


       ********* Firmware Version 4.12c  Note *****************

						    Date: 7/07/92
   Bugs fixed

   1. From V 4.10 and 4.12 will cause incorrect control instruction. It is a 
      new bugs from V 4.10 only U-1496 LCD model affected.

   2. Auto-answer malfunction at DTE speed under 19200 is corrected.
      This is a new bug from 4.12.


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