Please enable JavaScript.
Coggle requires JavaScript to display documents.
Internet connections types
Internet connections types
Dialup
56 kbit/s modems
Compression up to 320 kbit/s
Relatively slow throughput
Difficult to scale
Network with voice telephone line
Analog lines with limited frequency response
Legacy systems, network utility
May be difficult to find a modem
Satellite networking
High cost relative to terrestrial networking
15 Mbit/s down, 2 Mbit/s up
Remote sites, difficult to network sites
Communication to a satellite
Non-terrestrial communication
High latency
250 ms up / 250 ms down
High Frequencies 2 GHz
Line of sight, rain fade
Cellular networks
Mobile hotspot
Standalone devices
Use your phone for other things
Separate land into "cells"
Antenna coverages a cell with certain frequencies
Tethering
Turn your phone into a wireless router
Mobile devices
"Cell" phones
Line of sight services
Line of sight
Visual path between antennas
High frequencies
Common in metropolitan areas
Cover many homes simultaneously
Also options for non line of sight
Lower frequencies
WiMax
Worldwide Interoperability for Microwave Access
Wireless high speed Internet access
Cable Modem
Multiple services
Data
Voice
Data on the cable network
Use DOCSIS
Data Over cable Service Interface Specification
High Speed Networking
4 Mbits/s to 250 Mbits/s
Fiber
Enhanced features
1 Gbit/sec Internet access
1 Terabyte of cloud storage
Hundred of HD channels
2 Terabyte DVR
Converged services
Video
Data
Voice
Fiber optics to the home
High speed networking
ISDN
BRI - Basic Rate Interface (2B+D)
Two 64 kbit/s bearer (B) channels
One 16 kbit/s signaling (D) channel
PRI - Primary Rate Interface
Delivered over a T1 or E1
T1 - 23B+D
E1 - 30 B+D+alarm channel
Commonly used as connectivity from the PSTN to large phone systems (PBX).
Integrated Services Digital Network
DSL
ADSL
Asymmetric Digital Subscriber Line
Download speed is faster than the upload speed (asymmetric)
10,000 foot limitation from the central office
3 Km
Uses telephone lines
24 Mbit/s downstream / 3.3 Mbit/s upstream
VDSL
Very-high-bit-rate DSL
3 Mbit/s / 100 Mbit/s