Operators offering voip on mobile stick for laptop

[FONT=&quot]I’m looking for a mobile operator that allows to use Skype via a mobile internet stick for laptop. [/FONT]
[FONT=&quot]I understood that not all operators allow this application, Congstar doesn’t and the offer of T-Mobile is not suitable for me. [/FONT]
[FONT=&quot]I’d be very grateful to be informed about other operators that provide an offer on mobile internet stick for laptop opened to Skype.[/FONT]
[FONT=&quot]I’m interested in those operators covering Olsberg where I live.[/FONT]
[FONT=&quot]I can read German.[/FONT]