A modem is a device that modulates and demodulates the signals i.e.Main Differences Between Modem and Routerīetween Modem and Router helps us to understand the technical terminologyĪs well as their actual purpose and functioning, The modem doesn’t ensure security as it only transfers the packet or information as it is received. The types of modem exist are Dial-up, DSL ( broadband modem), Cable modem, and Mobile broadband. In the OSI model, the modem operates on the data link layer.Īpart from fiber optic, a modem is essential to access the internet. Provider) to your LAN that is assigned to it and used to connect the internet. That you can either connect with your individual computer or to any router toĪ unique IP address is provided by the ISP (internet service telephone, cable,įiber, or satellite, which further provides the standard Ethernet cable output It can be connected to any infrastructure i.e. Modem stands for modulator-demodulator means it modulates the analog signals from telephone lines to digital bits form (‘0’ or ‘1’) so that it can be easily encoded and transferred from the sender computer.Īnd on the receiving end, it demodulates the digital signals to analog and decoded. Modem act as a communication bridge between your LAN (local area network) and the internet. Router checks each data packet through the information saved on its header and then only transfer the same. Security Modem transfers the data without any authentication and check, thus no security is assured. Cable Used RJ45 for Router and RJ11 for Telephone. Physical Layer, Data Link Layer, Network Layer. Router routes the data packets to the respective computer basis the IP mentioned on their header. ‘0’ or ‘1, and demodulates from digital to analog. Process Modem receives the analog signal from telephone and modulates it to digital form i.e. Router is not essential to access the internet. Internet Access Modem is required to access the internet as it connects your local area network to the internet service provider. It is a device that routes the information to the respective computer connected to the local area network. Purpose It is a device that carries the information from the internet to your local area network. A Router is hardware that is used to connect or routes the data within one or multiple local area networks. Comparison Table Between Modem and Router (in Tabular Form) Parameter of Comparison Modem Router Definition A Modem is hardware that modulates the analog signal from phone or cable to computer and demodulates from computer to phone or cable.