VPN Password Permissions. This variable returns 1 if the password may be alphanumeric and is to be stored in non-volatile memory as the value of NVVPNPSWD, 2 if the password may be alphanumeric and is to be stored in volatile memory that will be cleared when the telephone resets, 3 if the password may be numeric-only and is to be stored in volatile memory that will be cleared mmediately after the first time the password is used (this is for use with numeric-only one-time token devices), 4 if the password may be alphanumeric and is to be stored in volatile memory that will be cleared immediately after the first time the password is used, and 5 if the password may be alphanumeric and is to be stored in volatile memory that is cleared when the user invokes VPN Sleep Mode and when the telephone resets.