I am scheduled to have MRV installed next week. I do not have an internet router, only the DSL modem supplied by Verizon. I am not terribly interested in on demand features at this time. I just want to make sure that MRV will work without the internet connection AND can DECA be installed if I dont have a router? I may want to get a router in the future if I need it and I dont want to have to schedule another installation appointment.