The R3100 represents the next step up from its entry level R310 and brings together an ISDN router, an eight-port 10BaseT Ethernet hub and a pair of analog ports...A feature called SmartPhone allows devices such as phones, modems and fax machines to be connected to the R3100 so they can also utilise the ISDN line...The Ethernet ports are arranged neatly to one side at the rear, and port...