
Appendix G. Glossary
TDM
Time Division Multiplexing. A method for sending two or more signals over a common transmission path by assignment the path sequentially to each signal, each assignment being for a discrete time interval.
Telco
Telephone company.
Telnet
A terminal emulation protocol, part of the TCP/IP suite of protocols, that provides remote terminal- connection services. (See also
TFTP
Trivial File Transfer Protocol. A simplified version of the TCP/IP file transfer protocol that does not include password protection or
TIA 464A
Telecommunication Industry Association’s standard for DTMF detection and generation.
Transparent BOP
See TBOP
trunk
A direct line between two telephone switching centers.
TSU
T1 Service Unit.
UDP
User Datagram Protocol. Connectionless protocol defined by RFC 768 for transmission of data without acknowledgment or error control.
UNI
User to Network Interface. Defines the interface between the CPE and the frame relay providers switch.
VCOM Module
One of the ATLAS 550 option modules. The Voice Compression (VCOM) Module can provide 8, 16, 24, or 30 compressed voice channels to implement voice over frame relay in the ATLAS 550.
Voice Compression
A means of reducing the bandwidth required for transmission of voice traffic with minimal impact on the quality of the voice.
VT-100
A
WAN
Wide Area Network. A network that connects users across large distances.
XMODEM
An
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