Telcordia Techno vglogies
T1 -- Digital
transmission facility capable of carrying data rates of 1.544Mbps.
Usually used for access/egress to provider's premises. May be broken
down into 24 DS-0 channels 64kbps each. The US Telco's use T1 as the
primary digital communications method - also known as
FT1 (Fractional T1) -
WAN services that use some portion of a T1
Circuit which may be divided into any combination of 24 individual
64Kbps channels known as
Digital transmission facility capable of carrying
data rates of 44.736Mbps(45Mbps). Combines 28
channels. Also known as DS-3.
TCP/IP (Transmission Control
Protocol/Internet Protocol) - The suite
of protocols that defines the Internet. Originally designed for the UNIX
TCP/IP software is now
available for every major kind of computer operating system. Some LANs,
now called INTRANET,
incorporate this protocol to maintain full compatibility to the
Internet. To be truly on the Internet, your computer must have TCP/IP
Technologies -- Formerly BELLCORE, i.e.
Bell Communications Research, was created during
the divestiture of the Bell System in 1984 to serve the Bell operating
companies by providing a center for technological testing and
certification to compliance to appropriate specifications. Today, many
telcos require any equipment they deploy is either certified by, or in
compliance with Telcordia Technologies requirements.
Throughput - The
amount of data transferred from one point to another in a specific
amount of time. Usually measured in BPS (Bits-per second).
Depending on the system the BPS can be stated in Kbps, Mbps or Gbps.
A common throughput calculation error is the difference between BPS and
CPS (Characters-per-second). Files sizes are normally stated in
CHARACTERS, not BITS. In most asynchronous data transfers there
are 10 bits per character. (one start, one stop, 8 data bits) i.e.
in a 15K file, there are 150K bits to be transferred.