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2. Router (computing) - Wikipedia

   en.wikipedia.org/wiki/Router_(computing)

   Router (computing) Rack containing a service-provider–class router connected to multiple networks. A router[a] is a computer and networking device that forwards data packets between computer networks, including internetworks such as the global Internet. [2][3][4] A router is connected to two or more data lines from different IP networks.

3. Modem - Wikipedia

   en.wikipedia.org/wiki/Modem

   Modems which use a mobile telephone system (GPRS, UMTS, HSPA, EVDO, WiMax, 5G etc.), are known as mobile broadband modems (sometimes also called wireless modems). Wireless modems can be embedded inside a laptop, mobile phone or other device, or be connected externally. External wireless modems include connect cards, USB modems, and cellular ...

4. DSL modem - Wikipedia

   en.wikipedia.org/wiki/DSL_modem

   DSL modem. A digital subscriber line (DSL) modem is a device used to connect a computer or router to a telephone line which provides the digital subscriber line (DSL) service for connection to the Internet, which is often called DSL broadband. The modem connects to a single computer or router, through an Ethernet port, USB port, or is installed ...

5. High-bit-rate digital subscriber line - Wikipedia

   en.wikipedia.org/wiki/High-bit-rate_digital...

   It was the first digital subscriber line (DSL) technology to use a higher frequency spectrum over copper, twisted pair cables. HDSL was developed to transport DS1 services at 1.544 Mbit/s and 2.048 Mbit/s over telephone local loops without a need for repeaters. Successor technology to HDSL includes HDSL2 and HDSL4, proprietary SDSL, and G.SHDSL.

6. Wide area network - Wikipedia

   en.wikipedia.org/wiki/Wide_area_network

   Wide area network. A wide area network (WAN) is a telecommunications network that extends over a large geographic area. Wide area networks are often established with leased telecommunication circuits. [1] Businesses, as well as schools and government entities, use wide area networks to relay data to staff, students, clients, buyers and ...

7. Gateway (telecommunications) - Wikipedia

   en.wikipedia.org/wiki/Gateway_(telecommunications)

   Gateway (telecommunications) A gateway is a piece of networking hardware or software used in telecommunications networks that allows data to flow from one discrete network to another. Gateways are distinct from routers or switches in that they communicate using more than one protocol to connect multiple networks [1][2] and can operate at any of ...