sible IP addresses).
Switch A switch is a network component that connects individual network
segments to one another. On the one hand, a switch can be oper-
ated as a bridge to the data link layer in the OSI model. Unlike the
bridge, however, a switch has more than one input and output. On
the other hand, the switch can be operated as a gateway to the net-
work layer in the OSI model. The device comparable to the switch in
the physical layer is known as the hub.
SWYX SwyxWare is a software-based communication solution for VoIP.
Syslog The syslog protocol is used to transmit status messages in an IP
network. In this way, different network components can be mon-
itored from a single, central system. Syslog messages are sent as
unencrypted text messages over the UDP port 514.
T.38 T.38 or Fax over IP (FoIP) refers to fax transmission via an IP net-
work.
TACACS+ The Terminal Access Controller Access Control System Plus
(TACACS+) is a client-server protocol for authenticating, authorising
and accounting for users. The TACACS+ server authenticates the
client by checking, e. g., the username and password. In contrast to
the UDP-based RADIUS protocol, TACACS+ uses TCP on port 49
and transmits the entire communication encrypted.
TAPI The Telephony Applications Programming Interface (TAPI) is a pro-
gramming interface for ISDN. It enables application programs to ac-
cess ISDN hardware from a PC. See also CAPI.
TCP The Transmission Control Protocol (TCP) is a connection-oriented
protocol. It works on the transport layer of the OSI model. With a
connection-oriented protocol, a logical connection is established be-
fore transmission and maintained. This enables data to be transmit-
ted reliably. Nonetheless, control information is constantly being
sent alongside the actual data packets. This causes the data volume
sent to increase. See also UDP.
TCP-ACK packet An ACK (acknowledgement) signal is used when transmitting data
to confirm the receipt or the processing of data or commands. TCP
uses ACK signals for communication.
TE Terminal equipment (TE) refers to a connection or operating type.
The TE connector is a terminal's connector. In TE operation, the
gateway is connected to the PABX's internal S0 and thus constitutes
bintec elmeg GmbH
Glossary
bintec RS Series 549
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