Garmin HM210DP/DI manual T1.413, Tcp/Ip, Telnet, Tftp

Glossary

- T -

T1.413

The American National Standards Institute (ANSI) standard for asymmetric digital subscriber line using discrete multitone modulation, which the G.dmt standard is based on.

TCP

Abbreviation of Transmission Control Protocol, and pronounced as separate letters. TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and also guarantees that packets will be delivered in the same order in which they were sent.

TCP/IP

Short for Transmission Control Protocol / Internet Protocol, the suite of communication protocols used to connect hosts on the Internet.

Telnet

A terminal emulation program for TCP/IP networks such as the Internet. The Telnet program runs on your computer and connects your PC to a server on the network. You can then enter commands through the Telnet program and they will be executed as if you were entering them directly on the server console.

TFTP

Short for Trivial File Transfer Protocol. A protocol for file transfers. TFTP is easier to use than the File Transfer Protocol (FTP) but is not as capable or secure.

TTL

Short for Time To Live. A field in an IP packet that limits the life span of that packet. Originally meant as a time duration, the TTL is usually represented instead as a maximum hop count; each router that receives a packets decrements this field by one. When the TTL reaches zero, the packet is discarded.

- U -

UDP

Short for User Datagram Protocol, which is a connectionless transport service that dispenses with the reliability services provided by TCP. UDP gives applications a direct interface with IP and the ability to address a particular application process running on a host via a port number, without setting up a connection session.

126 EN/LZT 108 6492 R2 - October 2003