Nortel Remote Gateway 9110 Installation And Administration Manual page 305

June 2005
switch
In a telecommunications network, a switch is the hardware that receives phone
calls and provides connections to telephone sets. The switch allows a connection
to be established as necessary and terminated when there is no longer a session
to support it.
In networks, a device that filters and forwards packets between LAN segments.
Switches operate at the data link layer (layer 2) of the OSI Reference Model and
therefore support any packet protocol. LANs that use switches to join segments
are called switched LANs or, in the case of Ethernet networks, switched
Ethernet LANs.
switch resource
A device that is configured on the switch.
T
TAPI
Refer to Telephone Application Programming Interface.
TCP/IP
Transport Control Protocol/Internet Protocol. The communication protocol used
to connect devices on the Internet. TCP/IP is the standard for transmitting data
over networks.
Telephone Application Programming Interface
A term that refers to the Windows Telephony API. TAPI is a changing (i.e.
improving) set of functions supported by Windows that allow Windows
applications to program telephone-line based devices such as single and multi-
line phones (both digital and analog), modems and fax machines in a device-
independent manner.
telephony
The science of translating sound into electrical signals, transmitting them, and
then converting them back to sound. The term is used frequently to refer to
computer hardware and software that perform functions traditionally performed
by telephone equipment.
TFTP
Refer to Trivial File Transfer Protocol.
Remote Gateway 911x Series Installation and Administration Guide
Glossary
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