I tried ssh and telnet using putty, it just gives blank screen and connection timeout after a while. It's a cable modem with two Ethernet Ports and Two Telephone PortsĮverything else you already discovered or tried for this device and other details like how this usually receives firmware upgrades and if you know something more about this Repeat the same above block of info for each known version you heard about Other potentially relevant info about this firmware version: ?.