B channel. With this setting, an external caller put on hold hears the
PBX's on-hold music.
Hook flash
The use of the inquiry, brokerage and three-party conference spe-
cial features in T-Net and certain performance features of some
PBXs is only possible with the hook flash function (long flash) of the
signal key on the telephone. On modern telephones, this key is in-
dicated with an "R".
Host name
A name used in IP networks instead of the corresponding address.
A host name consists of an ASCII string that uniquely identifies the
host computer.
HTTP
HyperText Transfer Protocol
Hub
Network component used to connect several network components
together to form a local network (star-shaped).
IAE
ISDN connection unit, ISDN connection socket.
ICMP
Internet Control Message Protocol
ICV
Integrity Check Value
Identify malicious
callers (intercept)
You have to request this performance feature from T-Com. The
company will provide you with further information on the procedure.
If you enter code 77 during a call or after the caller has ended a call
(you hear the engaged tone from the exchange), the caller's tele-
phone number is stored in the exchange. ISDN telephones can also
use separate functions for this performance feature. For more in-
formation on this function, please see your user's guide.
IEEE
The Institute of Electrical and Electronics Engineers (IEEE). A large,
global association of engineers, which continuously works on stand-
ards in order to ensure different devices can work together.
IETF
Internet Engineering Task Force
Index
The index from 0...9 is fixed. Every external multiple subscriber
number entered is assigned to an index. You need this index when
configuring performance features using the telephone's codes, e.g.
configuring "Call forwarding in the exchange" or "Define telephone
number for the next external call".
Infrastructure mode
A network in infrastructure mode is a network that contains at least
one access point as the central point of communication and control.
In a network in infrastructure mode, all clients communicate with
Funkwerk Enterprise Communications GmbH
Glossary
R1xxx/R3xxx/R4xxx
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