NuPoint stand-alone or Mitel Application Suite with a NuPoint blade? On the left side of the GUI, select Status under ServiceLink and post your services (and if they've expired). Also include the software versions that will be listed below the Sync button/blue bar.
Without TW licenses you won't be able to connect the phones via the Internet. If you're under the gun to get dial tone at the new location, statically configure the LAN IP of the 3300 into the phones (hold volume key while booting, configure network, ICP IP address). This will at least get the phones talking to the 3300.
Assuming you actually have a MAS w/ NuPoint and MBG (licensed), what mode is the server in? (server-only/server-gateway/dmz) Do you have a company firewall? Can you access it to configure port forwarding and QoS? What kind of Internet connection and bandwidth is at the main location?
-b