Cisco 1861 Integrated Services Router. Networking standards: IEEE 802.3af. Switching protocols: Ethernet, Data link protocols: Ethernet, Fast Ethernet, Management protocols: HTTP. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 85 %. Weight: 3.6 kg. Bundled software: Cisco Unity Express 2.3 Cisco USRST (8), Compatible operating systems: Cisco IOS SPS