Technical Terms
149
ISDN
Integrated Services Digital Network
Service integrating digital network
ITSP
Internet Telephony Service Provider.
An Internet telephony service provider offers an interface
via a gateway between Internet telephony and the classic
telephone network. Thus via an ITSP, VoIP users can also
reach subscribers in the classic telephone network, and vice
versa.
IVR
Interactive Voice Response
Interactive Call handling
LAN
Local Area Network
A local network, which is made up of numerous, intercon-
nected computer terminals within one company location and
which is used to transfer data.
LDAP
Lightweight Directory Access Protocol
A network protocol that allows querying and modification
of information of a directory service (a distributed hierarchi-
cal database in the network). The current version is specified
in RFC 4511.
LED
Light Emitting Diode
Light emitting diode (small light) for displaying status infor-
mation, e.g. for SwyxPhone.
MAC Address
Medium Access Control Address
Each network card identifies itself with the MAC address.
This address is an 8-byte address, which is uniquely defined
worldwide.
MAPI
Mail Application Programming Interface
This Microsoft interface can be used by applications to send
E-mails.
Multiple connection
Basic Rate Interface for operating up to eight ISDN termi-
nals (ISDN telephones etc.) on a S
0
bus. It is possible to
operate ISDN telephones, ISDN PC cards or ISDN telecom-
munications systems on a multiple connection. The devices
are addressed via MSNs.
MSN
Multiple Subscriber Number
A non-direct dialing-in line can have several numbers
(MSNs). The assignment of these MSNs to the terminals
takes place in the terminals themselves.
Term
Explanation
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