08-11-2012, 04:15 PM
Internet/Broadband-an overview
BroadbandServies.ppt (Size: 434 KB / Downloads: 23)
Brief History of the Internet
1968 - DARPA (Defense Advanced Research Projects Agency) contracts with BBN (Bolt, Beranek & Newman) to create ARPAnet
1970 - First five nodes:
UCLA
Stanford
UC Santa Barbara
U of Utah, and
BBN
1974 - TCP specification by Vint Cerf
1984 – On January 1, the Internet with its 1000 hosts converts en masse to using TCP/IP for its messaging
Broadband Policy-2004
Broadband connectivity as defined in Broadband policy-2004 is an “always on” data connection that is able to support interactive services including Internet access and has the capability of minimum download speed of 256 kbps to an individual subscriber from the POP of the service provider
Broadband Services
High speed Internet Access
Video-on-Demand
Interactive Games
Share market dealing & personal banking
News, travel & leisure information
Music/Movie Download
Chatrooms & newsgroups
E-mail & instant messaging
Personal websites and online magazines
Educational materials & research resources
Tele-medicine
Work at home
Internet radio & webcast concerts
Broadband Wireless Technologies
LMDS & MMDS
Provides point-to-multipoint two way broadband service
LMDS-Local Multipoint Distribution System
Operates in various bands such as 10.5 Ghz (8 kms) and 26 & 28 Ghz (3 kms)
Provides various interfaces at user end like E1, 4xE1, 10/100 BaseT Ethernet etc.
MMDS-Multichannel Multipoint Distribution System
Operates in 2-3 Ghz (20-40 kms radius)
Provides high speed data rates upto 10 Mbps