Bandwith

[ClintDaddy]

I was just wondering if anyone out there knew where I could find some info out about what the differences are in bandwith and terminology between like a T-1, T-3, DS-3 and the OC connections are. Just for knowledge. Thanks.

[Garfeild_Cat]

ISDN

ISDN stands for Integrated Services Digital Network. It is the most easily accessible and least
expensive of the faster networking methods, allowing transfer rates between 64K and 128K. It
is interoperable with pre-existing telephone technologies and operates over the same kind of
cable, but, since it is digital, requires a special modem or router to make use of the
expanded bandwidth.

T-1

A leased line connection capable of carrying data at 1,544,000
bits-per-second. At maximum theoretical capacity, a T-1 line could move a
megabyte in less than 10 seconds. That is still not fast enough for
full-screen, full-motion video, for which you need at least 10,000,000
bits-per-second. T-1 is the fastest speed commonly used to connect
networks to the Internet. (1.544 megabits per second.)

T-3

A leased line connection capable of carrying data at 44,736,000
bits-per-second. This is more than enough to do full-screen, full-motion video.

OC

Optical Carrier Internet connection. 155+Mb/s to 2.5Gb/s is serious speed for high-end Internet services for the most demanding applications and business connectivity

[Saki]

Hey Garfeild Cat, you said it straight from the book, but CISCO says things differently.