Carrier
Technology |
Speed |
Physical
Medium |
Application |
GSM
(mobile telephone service) |
9.6 Kbps to 14.4 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use |
HSCSD
(High-speed circuit-switched data service) |
Up to 56 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use |
POTS
(Plain Old Telephone Service) |
Up to 56 Kbps |
Twisted-pair |
Home and small business access |
Dedicated 56 Kbps on Frame Relay |
56 Kbps |
Various |
Business e-mail with fairly large file
attachments |
DS0 |
64 Kbps |
All |
The base signal on a channel in the set of
Digital Signal levels |
GPRS
(General Packet Radio System) |
56 Kbps to 114 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2000) |
ISDN |
BRI: 64 Kbps to 128 Kbps PRI: 23 (T-1) or 30 (E1)
assignable 64 Kbps channels plus control channel; up to 1.544 Mbps (T-1) or 2.048 (E1) |
BRI: Twisted-pair
PRI: T-1 or E1 line |
BRI: Faster home and small business access
PRI: Medium and large enterprise access |
IDSL |
128 Kbps |
Twisted-pair |
Faster home and small business access |
EDGE
(Enhanced Data GSM Environment) |
384 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2001) |
Satellite |
400 Kbps (DirecPC) |
RF in space (wireless) |
Faster home and small enterprise access |
Frame relay |
56 Kbps to 1.544 Mbps |
Twisted-pair or coaxial cable |
Large company backbone for LANs to ISP
ISP to Internet infrastructure |
DS1/T-1 |
1.544 Mbps |
Twisted-pair, coaxial cable, or optical fiber |
Large company to ISP
ISP to Internet infrastructure |
UMTS
(Universal Mobile Telecommunications Service) |
Up to 2 Mbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2002) |
E-1 |
2.048 Mbps |
Twisted-pair, coaxial cable, or optical fiber |
32-channel European equivalent of T-1 |
T-1C (DS1C) |
3.152 Mbps |
Twisted-pair, coaxial cable, or optical fiber |
Large company to ISP
ISP to Internet infrastructure |
DS2/T-2 |
6.312 Mbps |
Twisted-pair, coaxial cable, or optical fiber |
Large company to ISP
ISP to Internet infrastructure |
DSL
(Digital Subscriber Line) |
256 Kbps to 8 Mbps |
Twisted-pair (used as a digital, broadband
medium) |
Home, small business, and enterprise access
using existing copper lines |
E-2 |
8.448 Mbps |
Twisted-pair, coaxial cable, or optical fiber |
Carries four multiplexed E-1 signals |
Cable modem |
256 Kbps to 52 Mbps |
Coaxial cable (usually uses Ethernet); in some
systems, telephone used for upstream requests |
Home, business, school access |
Ethernet |
10 Mbps |
10BASE-T (twisted-pair); 10BASE-2 or -5
(coaxial cable); 10BASE-F (optical fiber) |
Most popular business local area network (LAN) |
E-3 |
34.368 Mbps |
Twisted-pair or optical fiber |
Carries 16 E-l signals |
DS3/T-3 |
44.736 Mbps |
Coaxial cable |
ISP to Internet infrastructure
Smaller links within Internet infrastructure |
OC-1 |
51.84 Mbps |
Optical fiber |
ISP to Internet infrastructure
Smaller links within Internet infrastructure |
HSSI |
Up to 53 Mbps |
HSSI cable |
Between router hardware and WAN lines
Short-range (50 feet) interconnection between slower LAN devices and faster WAN lines |
Fast Ethernet |
100 Mbps |
100BASE-T4 (twisted pair); 100BASE-TX (twisted
pair); 100BASE-FX (optical fiber) |
Workstations with 10 Mbps Ethernet cards can
plug into a Fast Ethernet LAN |
FDDI |
100 Mbps |
Optical fiber |
Large, wide-range LAN usually in a large
company or a larger ISP |
T-3D
(DS3D) |
135 Mbps |
Optical fiber |
ISP to Internet infrastructure
Smaller links within Internet infrastructure |
E4 |
139.264 Mbps |
Optical fiber |
Carries 4 E3 channels
Up to 1,920 simultaneous voice conversations |
OC-3/STM-1 |
155.52 Mbps |
Optical fiber |
Large company backbone
Internet backbone |
E5 |
565.148 Mbps |
Optical fiber |
Carries 4 E4 channels
Up to 7,680 simultaneous voice conversations |
OC-12/STM-4 |
622.08 Mbps |
Optical fiber |
Internet backbone |
Gigabit Ethernet |
1 Gbps |
Optical fiber (and "copper" up to 25
meters) |
Workstations/networks with 10/100 Mbps Ethernet
will plug into Gigabit Ethernet switches |
OC-24 |
1.244 Gbps |
Optical fiber |
Internet backbone |
SciNet |
2.325 Gbps (15 OC-3 lines) |
Optical fiber |
Part of the vBNS backbone |
OC-48/STM-16 |
2.488 Gbps |
Optical fiber |
Internet backbone |
OC-192/STM-64 |
10 Gbps |
Optical fiber |
Backbone |
OC-256 |
13.271 Gbps |
Optical fiber |
Backbone |