Glossary-2
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same company, usually through an Ethernet hub.
IP Address. A unique 32 bit address that identifies a net-
work device is connected to the network via TCP/IP.
IVR. Interactive Voice Response enables you offer ser-
vices, such as Pre-paid calling cards and Post-paid
accounts to your customers.
L
LAN. Local Area Network. A local area network that
carries data between workstations in the same loca-
tion. Workstations in a LAN are connected togeth-
er— typically by an Ethernet hub— to share
information.
LEDs. Indicators as to the status of the chassis and other
components of the system. LEDs appear on the chas-
sis and other components.
M
Maintenance Mode. A CLI module which provides util-
ities for maintaining the system.
Monitor Module. A CLI module which provides a set of
utilities to monitor the network and all system com-
ponents.
N
Null modem cable. A 9-pin cable used to connect the
Tenor DX
to a PC’s asynchronous console port.
P
PacketSaver. A packet multiplexing technology which
reduces the amount of IP bandwidth require to sup-
port multiple calls flowing between two networks.
PBX. Private Branch Exchange. Telephone switch locat-
ed on a customer’s premises that establishes circuits
between users and the PSTN (public network).
Power Inlet. Inlet for which you insert the supplied AC
power cord. The unit requires a 110-220 VAC.
PSTN. Public Switched Telephone Network (also known
as Central Office). Telephone Company Switching
facility.
R
RJ-45. A CAT 5 cable used to connect the
Tenor DX
to
an Ethernet, Line Circuit or Trunk Circuit.
RADIUS. When using IVR, the RADIUS (Remote Au-
thentication Dial-In User Service) is used for authen-
ticating and authorizing user access to the VoIP
network.
S
SelectNet
™.
The next generation of TASQ technology;
the functionality monitors your data network for jit-
ter, latency, and packet loss, and transparently
switches customer calls to the PSTN when required.
SIP. A signaling protocol used to establish a session on
an IP network.
SNMP. Simple Network Management Protocol (SNMP)
is the standard protocol used to exchange network in-
formation between different types of networks.
Subnet Mask. An IP address that determines how an IP
address is divided into network and host portions ac-
cording to the bits.
TCP/IP. Transmission Control Protocol/Internet Proto-
col. TCP/IP is a standard communications protocol
divided into seven layers of activity. Each layer de-
fines a different aspect of how two devices should
talk to each other (i.e., when a network device should
send/receive data). For example, layer one is the
physical means of communications (e.g., modem),
whereas layer 3 is the network type (e.g, Internet).
For TCP/IP, it is a combination of two layers of com-
munication protocol. TCP (layer 4) does the actual
transport of data; IP (layer 3) sets the rules for mov-
ing the data from one end of the network to another.
TCP/IP uses an IP address to identify a location for
specific network devices.
Transition Module. The RJ-48 ports on the rear of the E1,
T1 or DS1 card used for connectivity to the network.
Trunk Group. A collection of T1 or E1 channels used to
connect the
Tenor DX
to the network or another
piece of equipment.
W
WAN. Wide Area Network. A number of LANs connect-
ed together through a long distance communications
medium. For example, your company may have a
LAN in New York, a LAN in Tokyo, and a LAN in
Los Angeles. When these sites connect together over
the data network or the public network, it is consid-
ered a WAN. As a result, intra-corporate information
is passed through the data network from one LAN to
another LAN site in a remote location.
