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subnet:
An independent network segment, that is, it has the same network address, but its
subnet address is different.
switch:
A data switch connects computing devices to host computers, enabling multiple devices
to share a limited number of ports. An electrical switch is a device for making, breaking, or
changing the connections in an electrical circuit.
synchronous transmission:
that data is transmitted at a fixed rate.
synchronous:
Any operation that is controlled by a clock or timing mechanism. (Compare with
asynchronous).
TCP/IP:
Transmission control protocol/Internet protocol, a set of protocols that govern peer-to-
peer connectivity functions for local and wide area networks.
TCP:
Transmission Control Protocol.
Telnet:
The TCP/IP virtual terminal protocol that allows a user at one site to access a remote
system at another site.
throughput:
The number of bits, characters, or blocks that are able to pass through a data
communication system.
training:
A process where two modems try to determine the correct protocols and transmission
speeds to establish a communication session.
trellis-coded modulation:
correction to a modulation scheme by adding an additional bit to each baud.
UDP:
User Datagram Protocol. A connectionless protocol that converts data messages generated
by an application into packets to be sent over IP.
UNIX:
An operating system developed at AT&T Bell Laboratories.
upload:
To receive a file transmitted over a network.
URL:
Uniform Resource Locator. An Internet standard addressing protocol for describing the
location and access method of a resource on the Internet.
USB:
Universal Serial Bus. A bi-directional, isochronous, serial interface for adding
dynamically connectable peripheral devices, without the need for a reboot.
UTP:
Unshielded twisted pair is the most common kind of copper telephone wiring.
VC:
Virtual Circuit. A logical connection or packet-switching mechanism established between
two devices at the start of transmission.
VCI:
Virtual Channel Identifier. The 16-bit field in an ATM cell header that specifies the virtual
channel over which the cell is to be transmitted.
Transmission with the transmitter and receiver synchronized so
Advanced error correction coding technique for forward error
1813 VoIP Gateway User's Guide
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