AASTRA 4220 Lite for BusinessPhone User Guide EN - Manual (Page 93)

93 BusinessPhone – Dialog 4220 Lite / Dialog 3210
Glossary
Extension
All telephones connected to the PBX have a
unique internal number (up to 8 digits).
Function code
A digit code that corresponds to a specific
function.
Hold
To put a call on hold.
See section “ During Calls ” on page 27.
Information
Internal callers are informed about absence
and time of return. External callers are diverted
to the operator, where the same information is
available. Information can be of two kinds:
1. Pre-programmed text information.
2. Voice information.
Intercom Line
A two-way direct call function between two
extensions, for instance an executive-secretary
communication.
See section “ Other Useful Features ” on
page 71.
Intrusion
To intrude on an ongoing call when a requested
extension is busy.
See section “ Outgoing Calls ” on page 17.
IP call
Internal call sent via an internal data network
(LAN or WAN).
ISDN
Integrated Services Digital Network. Provides
your system with supplementary services from
the public net.
Least Cost Routing
A function that automatically selects the
cheapest way to connect your external call (not
necessarily the shortest distance). See section
“ Least Cost Routing ” on page 79.
Loudspeaker Paging
All members of an extension group are paged,
i.e. receive a short, sharp tone on the
loudspeaker followed by a Voice message from
the sender.
See section “ Group Features ” on page 65.
Mailbox
The Mailbox system controls the messages
that are left for or sent by you when you are
absent. See section “ Messages ” on page 49.
Message
A message can be sent to any extension. This
is useful when you receive the busy tone or get
no answer. There are two kinds of message:
1. Call Me message.
2. Voice message.
See section “
Messages ” on page 49.
Mute
To switch the microphone temporarily off. See
section “ During Calls ” on page 27.
Night Switching
Used for directing all incoming calls to one
extension (answering position), for example
when the office is closed.
See section “ Other Useful Features ” on
page 71.
Password
A four-digit code needed to e.g. block your
extension and retrieve messages from the
Mailbox system. You can set your own
Password.
See section “ Security ” on page 62.
PBX
Private Branch Exchange. Your telephone
switching system (e.g. BusinessPhone 250).
Pre-defined text
Pre-programmed absent information. See
section “ Absence Information ” on page 42.