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A+ Bandwidth Technologies

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A+ Bandwidth Technologies

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[edit section] Bandwidth Technologies

Listed below is the technology name followed by Maximum Throughput Speeds and it'sCommon Uses.

[edit section] Bandwidth Information

Technology Maximum Throughput Speeds Common Uses
GSM mobile telephone services 9.6 to 14.4 Kbps Wireless technology used for personal and business mobile telephones
Regular telephone (POTS, for Plain Old Telephone Service) Up to 56 Kbps Home and small business access to an ISP using a modem
X.25 56 Kbps Provides communication between mainframes and terminals
ISDN 64 Kbps to 128 Kbps Small to medium-size business access to an ISP
IDSL (ISDN Digital Subscriber Line 128 Kbps Home and small business access to an ISP
DSL Lite or G.Lite Up to 384 Kbps upstream and up to 6Mbps downstream Less expensive version of DSL
ADSL (Asymmetric Digital Subscriber Line) 640 Kbps upstream and up to 6.1 Mbps downstream Most bandwidth is from ISP to user
SDSL (Symmetric DSL) 1.544 Mbps Equal bandwidth in both directions
HDSL (High-bit-rate DSL) Up to 3 Mbps Equal bandwidth in both directions
Cable modem 512 Kbps to 5 Mbps Home or small business to ISP
VDSL (very-high-rate DSL) Up to 55 Mbps over short distances Future technology of DSL under development
802.11b wireless Up to 11 Mbps Currently, most popular wireless
802.11a wireless Up to 54 Mbps Shorter range then 802.11b, but faster
802.11g wireless Up to 54 Mbps Compatible with 802.11b, but faster
Frame relay 56 Kbps to 45 Mbps Businesses that need to communicated internationally or across the country
Fractional T1 N times 64 Kbps (where n is the number of channels or portions of a T1 leased Companies expecting to grow into a T1 line, but not yet ready for a T1
T1 1.544 Mbps To connect large companies to branch offices or an ISP
Token Ring 4 or 16 Mbps Used for local network
Ethernet 10 or 100 Mbps Most popular technology for a local network
T3 45 Mbps Large companies that require a lot of bandwidth and transmit extensive amounts of data
OC-1 52 Mbps Base rate of transmission used by SONET and ATM. Multiples are called Optical Carrier levels (OCx).
FDDI 100 Mbps Supports network backbones from the 1980s and early 1990s; also used to connect LANs across multiple buildings
ATM 25, 45, 155, or 622 Mbps Large business networks and LAN backbones; uses different OC levels
OC-3 155 Mbps Internet or large corporation backbone
Gigabit Ethernet 1 Gbps Latest Ethernet standard
OC-24 1.23 Gbps Internet backbone, uses optical fiber
OC-256 13 Gbps Major internet backbone, uses optical fiber
SONET (Synchronous Optical Network) 52 Mbps to 20 Gbps Major backbones make use of different OC levels


[edit section] Ethernet cabling systems

Cable systems Speed Cables and Connectors Maximum Cable length
10Base2 (ThinNet) 10 Mbps Coaxial uses a BNC connector 185 meters or 607 feet
10Base5 (ThickNet) 10 Mbps Coaxial uses an AUI 15-pin D-shaped connector 500 meters or 1640 feet
10BaseT and 100BaseT (twisted-pair) 10 or 100 Mbps UTP or STP uses an RJ-45 connector 100 meters or 328 feet
10BaseF, 10BaseFL, 100BaseFL, 100BaseFX, 1000BaseFX, or 1000BaseX (fiber-optic) 10 Mbps, 100 Mbps, or 1 Gbps Fiber-optic cable use an ST or SC fiber-optic connector 500 meters up to 2 kilometers (6,562 feet)
1000BaseT (Gigabit Ethernet) 1 Gbps Twisted pair cable with RJ-45 connectors or Fiber-optic 100 meters or 328 feet

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