Ascotel IntelliGate 2025/2045/2065
1002 Glossary Part 9
H
I
H.323 IP telephony protocol. The H.323 definitions contain a proto-
col stack with different interfaces
for voice, video and data transmission.
HOLD Holds a call
Hotkey Terminal key used for storing freely selectable numbers for
abbreviated dialling.
Hotline (HL) Sets up a connection to a predefined destination using num-
bers configured in the PBX. On this terminal / handset, the
predefined destination is dialled automatically whenever the
receiver is picked up or the seize key is pressed.
Incoming call Call from the network to a PBX subscriber.
Incoming Call Logging (ICL) Incoming call logging
Individual charge counting (ICC) Allocates the call charges to the cost centre
Initialization After a first start the system is reset to its factory settings. The
configuration and customer data is deleted.
Initialization values Configuration parameter values after an → initialization
Integrated Services Digital Network (ISDN) Integrated services digital network for the digital transmission
of services such as voice, data, fax, etc.
Internal Used in general for the subscriber side of the PBX.
Internal call Both the source and destination are internal
Internal subscribers Subscriber on a PBX
International prefix Digit sequence used for dialling abroad,
e.g. 0044 for the UK.
Internet Protocol (IP) The Internet Protocol (Layer 3) is designed to transport data
packets from a transmitter to a receiver via several networks.
The transmission is packed-oriented, connectionless and not
guaranteed.
Internet Service Provider (ISP) A company that provider access to the Internet and Internet-
specific services.
IP Gateway Converts a phone number into an IP address for forwarding
via the LAN.
ISDN terminals Terminals that comply with the standard of the European Tel-
ecommunications Standards Institute.
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