It was my promise to talk (a bit) about how to make an (HSDPA/3G GSM Modem) Internet connection through KNetworkManager on openSUSE 11.2 RC1. So here it is.
It is a Modem
As it is said, our computer (kernel) has to recognize it as a modem before NetworkManager take the job. If it is not, see here for workaround, and in my case, i have to run (as root user) : usb_modeswitch.
There’s an easiest way to doing this: “just plug it, and the kernel will automatically know it” through udev. Unfortunately, it does not work on my machine, kind of an option.ko issue in the kernel (usb-serial?) for ZTE MF626 Modem. Hopefully yours is OK.
If the kernel recognize it, then KDE Network Management will tell it to you:
Set it Up
Click on KNetworkManager icon (appears in system tray), choose Manage Connections:
Go to Mobile Broadband tab, and Add , GSM Connection:
and fill the needed information (call number, username and password, APN, etc):
Let KNetworkManager set the PPP configuration as default.
Finally, press OK button to proceed.
Connect it!
Let now KNetworkManager do the job!: click on it, and choose (TFlash) connection.
Wait it
Done!
In case someone needs deeper workaround, here are my messages log and NetworkManager log files.
Have a lot of fun! 
[singing] We’re online, online.. online, online… 
bos, di gue modem huaweinya ngga dikenali nih… gimana dong?
eh , bener sierra 885 gw bisa kedetect… tapi connectnya tunggu authorization mulu. jadi karna ini toh??
ntar deh gw coba, mudah-mudahan bisa dengan command usb_modeswitch…
#Itachi: sini, bawa modem-nya ke Lab..
#rudyjuandi: Coba di-reconnect: Disconnect, lalu klik lagi koneksi modem-nya.
Saya perhatikan update ke KDE 4.3.4 sudah menyelesaikan isu ini. Jika tidak, workarround-nya saya sebutkan seperti di atas.
the tab “Mobile Broadband” cannot be accessed on my networkmanager, what is wrong?
Thanks! H
#MrSolar: Apology, I didn’t mention how to solve such a thing in 2′nd paragraph. Now it’s fixed.
You have to let the kernel knows it as a modem, then udev will tell it to KNetworkManager that it is exist (after that, it will be showed up) .
Have fun!
pak ada setting buat 11.1 nya ga ???
klo di 11.2 sih berhasil.