hi the longbowman
From our experience the error 680 normally always indicates a conflict against the modem component. When the laptop attempts to dial using the modem it cant initialise.
Trouble Shooting device manager port conflicts tends to resolve 99% of these issues.
Check the modem properties under device manager (may display error code 10 and/or not have the modem, diagnostics and advanced tabs) Disable all devices that can use a port (Bluetooth, other modems, devices listed under ports including the VMC applications and diagnostics ports) reboot and recheck the modem properties. If the advanced tab is now available select it and advanced port settings and change the com port to a high end com port.
Renable all disabled devices and reboot again. Reconnecting should now allow connection.
Cheers
Albert
eForum team