A router is connected to two or more data lines from different networks.
802.11n/ac Dual Band AP Router
A network gateway is an internetworking system capable of joining together two networks that use different base protocols.
WiFi Range Extenders boost the existing WiFi in your home by receiving the wireless signals from your router and repeating them with powerful amplifiers and antennas, extending your coverage by up to twice the range.
video bridge is a type of communication equipment that makes it possible to connect multiple locations into a common conference setting that provides both audio and real time visual interaction for the participants.