Samsung AceLink SAM-335A User Manual page 60

Appendix C
C-4
Description of Terms
Switch
A network device for filtering and transmitting frames based on the
destination address of a frame. A switch operates at the Data Link Layer of
the OSI-RM.
TCP/IP (Transmission Control Protocol/Internet Protocol)
One of the network protocols that are frequently used in a LAN. When data
is transferred through a network, data is segmented into a series of packets
before transmission. IP moves a data packet from one place to another, and
TCP manages the flow of data and checks whether data is correct.
Telnet
One of the Internets services, which is used for connecting to another
computer on the Internet. Telnet is used for remote control of a computer.
When a user accesses another computer, a user ID and a password are
requested for using the computer. Telnet is used for connecting to
domestic communications on the Internet. Accordingly, a user having a
domestic communications ID can immediately connect to a domestic
communications network through 'Telnet'.
PSTN (Public Switched Telephone Network)
A switching connection type provided by an ISP and a public
communications network premising the use by many and unspecified
persons. It was originally used for the telephone, but it is also used for
communication among facsimiles and computers as more advanced
communications equipment are developed. It is also referred to as POTS.
POTS (Plain Old Telephone Service)
A telephone network which does not provide additional services.