Week 3 Project

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Broadband Networks

Broadband networks consist of high-speed transmission technologies. The following broadband network services are available:

Asynchronous Transfer Mode (ATM): Supports a transmission rate of 1.5 megabits per second (Mbps) to more than 9 gigabits per second (Gbps), parceling data into �xed 53-byte cells for transmitting data, audio, and video over the same network. ATM can transmit data from the computers of different suppliers to your desktop.

Digital Subscriber Line (DSL): Operates over existing copper telephone lines to carry data, voice, and video but provides a higher transmission capacity than integrated services digital network (ISDN).

Asymmetric Digital Subscriber Line (ADSL): Provides transmission speeds of 1.5 to 9 Mbps when receiving data and up to 640 Kilobits per second (Kbps) when sending data.

Frame relay: Relies on digital circuits that require less error checking than packet switching. It is a shared network service with a transmission rate of 56 Kbps to more than 40 Mbps.

ISDN: Transmits data at the rate of 128 Kbps. ISDN is an international standard for dial-up network access using existing local telephone lines that integrate data, image, video, and voice services.

Symmetric Digital Subscriber Line (SDSL): Provides a transmission speed of 3 Mbps.

Cable modems: Operate over cable TV lines. Transmission speed is up to 30 Mbps. These modems provide high-speed access to corporate intranets and the web.

T1 Line: Provides data transmission speeds of 1.544 Mbps. A T1 line is a dedicated telephone connection that consists of 24 channels.

Let us now learn about several applications of the telecommunication technology.