
AVSD API v2.4
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+ Fully reworked API
+ More simple to use
+ New useful functions
+ Mistake of reading data from the port, if connected port is
  closed, is fixed.
+ Corrected avsd.sys  driver work with events during set/reset signals of
  virtual port.
+ Code of ERR_AVSD_REBOOT_REQUIRED mistake was added to avsdapi.h
  file.
+ Virtual ports are present in the list of real ports in modem
  connection settings.
+ Mistake of synchronization while deleting virtual ports was fixed.
+ AvsdApiTest.exe demonstration program interface was changed.
+ Signals are not reset after port opening.
+ The possibility to add any quantity of ports in trial version is
  eliminated.