Prior to Avanti 2.4, OpenVMS login’s using Reflection 2011 or E-Term32 VT terminal emulators to the OPA0 or TTA0 virtual serial ports may not be possible.  The Reflection and E-Term32 emulators appear to skip password entry.  PuTTY, SmarTerm, KEA, Hyperterm, and most other VT terminal emulators do not exhibit this behavior.

The Telnet standard states that a <CR> that is not followed by an <LF> should instead be followed by a <NULL>.  Most VT terminal emulators do not conform to this standard.  However, Reflection and E-Term32 closely follow the Telnet standard and do implement this feature. VMS does not handle the <NULL> on the serial port very well.  Avanti has been updated to handle the <NULL> properly, which resolves the problem with Reflection and E-Term32 logins against virtual serial ports.