

	********* Firmware Version 4.07 release note *********
						     Date:04/10/92


   1. For U-1496E and U-1496R, HS LED is not only to indicate Hi-speed
      (above 2400) or Lo-speed. It also indicate

	a. After power on, the HS LED will flash to indicate initialization
	   is going on.
	b. HS LED will flash regularly (half sec ON, half sec off) at dialing,
	   handshaking, and retrainning. When Fast rate Re-Negotiation occurs
	   the HS LED will also flash. If negotiation failed, HS LED will go
	   flash periodically (retrainnig).

   2. Improve the perfomance ON HSLINK bidirection file transfer.

   3. Disable dial tone detection if bit 4 of s41 is set, no matter what
      X setting is.

   4. Improve the compatibility with Nokia ECM 4896.

   5. Bit 2 of s41 is set, modem will keep trying to handshake with remote
      modem up to 3 minutes before dropping the carrier.

   6. Lowest rate of Fast rate Re-Negotiation will be limited to 7200 due
      to the equal performance of 7200 and 4800.

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