I've wrote a simple batch file to connect to a specific VPN connection using RASDIAL
but it always returned the error
691 Access denied because username and/or password is invalid on the domain.
then i tried pointing to my Remote Access Phonebook (Rasphone.pbk) and see what happens
rasdial MyVPNConnection /phonebook:%userprofile%\AppData\Roaming\Microsoft\Network\Connections\Pbk\rasphone.pbk
and still there was an error 691.
I've then unchecked the following
but still the same problem was reported when executing my batch file.