Ericsson DT288 User Manual page 66

Glossary
Extension
All telephones connected to the PBX have a
unique internal number (up to 8 digits). If your
telephone is equipped with a display, you can
see your number.
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.
Intrusion
To intrude on an ongoing call when a requested
extension is busy. See section "Outgoing calls".
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".
Mailbox
The mailbox system controls the messages
that are left for or sent by you when you are
absent. See section "Mailbox system".
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 "Internal messages".
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Mute microphone
To switch the microphone temporarily off.
See section "During calls".
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".
PBX
Private Branch Exchange. Your telephone
switching system (e.g. BusinessPhone 250).
Pre-defined text
Pre-programmed absent information.
See section "Information".
Third party
A third connection (person), which can be
included in an ongoing two person conversation.
The connection can be internal or external.
See section "During calls".
Tie line
An external line from the private network.
Transfer
During an internal or external ongoing call you
can make an inquiry and then transfer the call
to another party (internal or external).
See section "During calls" and "Useful hints".
Trunk line
A trunk line is the same as an external line.
Can be either digital or analog.
BusinessPhone - Portable DT288