|
Connection Chart |
| |
| Carrier Technology |
Speed |
Physical
Medium |
Application |
| GSM |
9.6 Kbps to 14.4 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use |
| (mobile
telephone service) |
| HSCSD |
Up to 56 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use |
| (High-speed
circuit-switched data service) |
| POTS |
Up to 56 Kbps |
Twisted-pair |
Home and small business access |
| (Plain
Old Telephone Service) |
| 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 |
56 Kbps to 114 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2000) |
| (General
Packet Radio System) |
| 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 |
BRI:
Faster home and small business access |
| PRI: T-1 or E1 line |
PRI: Medium and
large enterprise access |
| IDSL |
128
Kbps |
Twisted-pair |
Faster
home and small business access |
| EDGE |
384 Kbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2001) |
| (Enhanced
Data GSM Environment) |
| 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 |
Up to 2 Mbps |
RF in space (wireless) |
Mobile telephone for business and personal use
(available in 2002) |
| (Universal
Mobile Telecommunications Service) |
| 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 |
256 Kbps to 8 Mbps |
Twisted-pair (used as a digital, broadband
medium) |
Home, small business, and enterprise access
using existing copper lines |
| (Digital
Subscriber Line) |
| 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 |
135 Mbps |
Optical fiber |
ISP
to Internet infrastructure |
| (DS3D) |
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 |
|
|
|
|
Internet Services
