OK I forgot to mention that:
I did not get my setup to work with NetworkManager,
I switched to ifup in Yast2.
Maybe it works? I like ifup anyway.
So anyway here are some web-links.
Some will lead you down the wrong track, so go slowly,
step-by-step and check yourself (unless you're experienced).
Quozl's Maxon BP3-USB on Linux
bp3-usb - Quozl's Wiki
Bigpond Maxon Bp3-ext Modem Using sierra module - Ubuntu Forums
www.zte.com.au • Login