SHDSL is a high-speed digital subscriber line that uses a single pair of copper wires to transmit data. It can transfer signals at a rate of 192 Kbps to 2.3 Mbps and covers distances of 1.8 to 4.6 miles per second. It is commonly used in homes and small to medium-sized businesses for various purposes. To use the service, a subscription with an ISP, a telephone line, and a SHDSL modem are required. Bonding or reverse multiplexing can be used for higher data rate requirements.
Single-pair high-speed digital subscriber lines (SHDSL) allow ordinary telephone lines to connect to the Internet and transmit data streams over a single pair of copper wires. It is also known as a symmetrical digital subscriber line. SHDSL is the first system developed from scratch and approved by the International Telecommunication Union (ITU) to be an international standard in symmetric digital subscriber lines (DSL). It was developed to improve on other existing DSL technologies, such as single line digital subscriber line (SDSL) and asymmetric digital subscriber line (ADSL). Typically, it can transfer T1, E1, ATM, IP, and ISDN signals at a high-speed data rate ranging between 192 kilobits per second (Kbps) and 2.3 megabits per second (Mbps), and covers distances from 1.8 to 4.6 miles (about 3 to 7.5 km) per second.
A user with a higher data rate requirement than an SHDSL can provide can use more than one copper pair to carry data from source to destination. Once at the receiving end, the data is recombined by the lines used to carry it. This technique is known as bonding or reverse multiplexing.
SHDSL is commonly used in homes to access the Internet for gaming, telephony, music and video uploads and downloads, email, messaging, website browsing, and other social, educational, business, and personal purposes. Small to medium-sized businesses use it for video conferencing, web hosting, dial-up local area network (LAN) access, corporate LAN-to-LAN connections, virtual private networks, and file transfers involving large volumes of data. The bandwidth or size of the information highway can be dynamically allocated between voice, data and video applications as the services are managed within the digital realm.
The basic requirement for secure SHDSL service is a subscription with an Internet Service Provider (ISP). For dedicated use of the service, a telephone line must also be provided, which means that the telephone line cannot function simultaneously as a telephone service and as a SHDSL service, even if a frequency splitter is installed. You will also need a SHDSL modem for the service to connect your computer to your ISP using your phone line. Also, a SHDSL router would be required for computers connected to a network.
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