Thanks again Jeremy. Yes somthing like the diagram is what I had in mind. The satelite doesn't use the phone for upload its from
www.farmside.co.nz and was just plug and play which surprised me. Printer access isn't a big issue to do without if it complicates matters. Public IP is Linux-based and runs on a dedicated machine and I think is set up with a firewall. Back to my original question is a wireless router what I need or do you need more info?