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A Network connected by cable that can run at 10mbps (10baseT) or 100mbps(100baseT).
The other common Ethernet specifications are 10base5 (Thick Cable Ethernet)
and 10base2 (Thin Cable Ethernet). The speed of your connection depends
on your hub, and you can get switched hubs connecting 3 Ehernet connections
at 30mbps. Fast Ehthernet networks can be integrated with regular ones
A facility to prevent unauthorised phone use. An extension can be locked
by entering a code and unlocked by entering a password. When locked
the phone is subject to call barring, perhaps restricting it to internal
and emergency service calls only.
A device (or software in a router) that links an organisation's network
to the internet and restricts the types of traffic that it will pass,
to provide security.
File Transfer Protocol - An interactive file transfer capability that
is often used on TCP/IP networks. Requires users to log in to (have
an account on) the remote computer.
A deprecated term for a device that enables data to flow between networks
- forming and Internet.
A group of extensions is rung by dialling a number. The group may be
set as a ring group, in which case all of the extensions ring at once,
or it may be set as a Hunt Group, in which case the system will find
a free extension in the group to take the call.
The System manufatured by Siemens.
(By analogy with the hub of a wheel) A device connected to several other
A central connecting device in a network that joins communications lines
together in a star configuration.
Group of phones that ring simultaneously when a call comes in - as one.
Internet Protocol - The Network layer for the TCP/IP protocol suite widely
used on Ethernet networks. IP is a connectionless, best-effort packet
switching protocol. It provides packet routing, fragmentation and re-assembly
through the data hubs.
Integrated services Digital Network - a high-speed Internet connection
that doesn't use a modem, and can get up to speeds of up to 128kbp/s.
ISDN comes in 2 forms: ISDN2 (basic rate) and ISDN30 (primary rate).
See Basic Rate
See Primary Rate
Kilobits per second.
A telephone for use with a particular make and model of telephone system
which incorporates features allowing it to communicate with the telephone
system and display information, typically by means of lights, buttons
and visual displays.