Greyhound Lines, Inc. , usually shortened to Greyhound, is an intercity bus common carrier serving over 3,800 destinations across the United States, Canada, and Mexico.
In order for devices on the network to connect to the Internet, the router must be connected to a modem. Therefore, most routers have a specific Ethernet port that is designed to connect to the Ethernet port of a cable or DSL modem. A modem is a device that provides access to the Internet (see below). The modem connects to your ISP, which typically provides either cable or DSL Internet service.
Summary: 1. A router is used to connect two or more networks while a modem is used to connect to a phone line. 2. A router only connects to RJ45 connectors while modems need an RJ45 and an RJ11 for the phone line. 3. A router provides security measures to protect your network but a modem does not. 4.