Telstra bigpond usb Sierra aircard 880u will not connect on mint debian
I have just started using the latest version of Mint Debian(LMDE) on an emachine 64 bit. I am dual booting with windows 7 on which the Telstra Bigpond Sierra aircard 880u usb modem works fine. It will not connect using LMDE, I have tried some of the simpler fixes found on the web but to no avail, I am not very linux experienced so hav e not tried command line fixes.
The software recognizes the modem, I have used telstra.bigpond as the apn and used correct dial number sequences with bigpond username and password. Has anyone got this combination working and if so how.
Any assistance would be greatly appreciated