As fs007 said, consumer 3g accounts generally don't provide the facility for routing (the service providers use PAT - Port Address Translation, to use the same IP address for multiple customers). The taikonetwork device you linked is primarily designed for business use. We use similar devices on some of our remote sites, along with business 3g accounts, which have an 'Unrestricted APN' and are routable.
You may be able to get your service provider to move you to an 'Unrestricted APN' account.