Hi THUNDER1
Updating to the newest VMC software is a possible solution for a 619 error.
Other possibilities are:
Faulty SIM
Poor coverage area
Incorrrect APN set up on device
Or a software clash with Bluetooth, infared or any other connection tool that's running on the computer
In some cases a 619 error is just temporary, and a restart of your system and reconnection can resolve this.
Give these atry and let me know how you get on, or if you need any further assistance.
Regards
Trev
eForum Team