Benefits of DSL technology and common access methods

The advantages of DSL technology and common access methods are common problems. However, how can we make more precise settings for DSL technology to facilitate our use?

Introduction to broadband access technology
◆ General dialing and ISDN
◆ Twisted pair Ethernet Access
◆ Cable TV hfcable Modem access
◆ Optical fiber access
◆ Wireless Access
◆ Electric Power Internet access
◆ DSL access

What is DSL?

DSLDigital Subscriber Line (digital user Line) is a transmission technology that uses copper telephone twisted pair wires as transmission media, DSL is a broadband access technology 1980sBell laboratory invented DSL technology Joseph Lechleider first proposed the asymmetric DSL technology that uses copper wires to transmit broadband signals. In 1994, the ADSL Forum was founded and started to promote ADSL technology. 1998, ADSL technology entered China. In the 21st century, ADSL grew into the most popular broadband access technology.

Why use copper wire to access DSL technology

The network has a wide coverage, large investment savings, and no investment in line materials or laying and construction. The network is ready-to-use. You can activate high-speed services for users immediately and enable broadband services at the same time, generally, the original voice service is not affected. DSL technology is a group of standards collectively referred to as xDSL symmetric and asymmetric DSL. It distinguishes symmetric dsl1_ric Based on upstream and downstream data rates, generally, it does not support simultaneous transmission of data and common voice signals, and is suitable for enterprise point-to-point connection applications.
HDSLHigh Data Rate DSL)
SDSL Symmetric DSL/Single-pair DSL)
SHDSLSingle-pair High-speed DSL)

Asypolicric)

The downlink speed is much higher than the uplink speed. The simultaneous transmission of data and common voice signals is suitable for normal users to access the Internet:
Adslasypolicric DSL)
VDSLVery High Speed DSL)
ADSL asymmetric user Digital Line

One of the most widely used broadband access technologies in the world occupies more than half of the broadband access market, and ADSL features high bandwidth speed: 8 Mbps downstream bandwidth, 1 Mbps Internet access, dedicated bandwidth not interfering with calls, secure and reliable: A star network topology, fast and convenient installation: You can directly use the existing user telephone line & #61548; affordable: you only need to pay for data communication when using ADSL to access the Internet, and do not need to pay additional phone fees.

ADSL Access Method
◆ Leased line access and virtual dial-up access
◆ Leased line access
◆ Permanent online
◆ Fixed public IP Address
◆ Applicable to enterprise users
◆ Virtual dial-up access
◆ Authentication, authorization, and billing are required
◆ Dynamically allocate public IP addresses
◆ PPPoE protocol is generally used
◆ Applicable to individual users
◆ ADSL Modem bridging and routing Modes
◆ Bridge Mode
◆ Work in Layer 2 mode
◆ IP packets are not processed
◆ Configure a public IP address or perform virtual dialing on the user terminal

Routing Mode
◆ Working in three-tier Mode
◆ Route IP Packets
◆ Configuring public IP addresses or performing virtual dialing by ADSL Modem
◆ Simple functions such as NAT and RIP are also provided.