Alcatel-Lucent OmniPCX Office Installation Manual page 182

Chapter
8
If the operator is absent, internal and external calls to the operator are directed to an external signaling
device that lets any authorized terminal take these calls.
8.1.8 H
H.323
ITU standard for multimedia communication (voice, video, data).
H.450
Additional services associated with H.323 version 2.
HSL
High Speed Link. Link between the basic module and a
daughter board to be fitted on the
HTTP
HyperText Transfer Protocol. Standard application protocol for exchanging files (text, images, audio, video,
etc.) over the Internet.
HTTPS
Secure HyperText Transfer Protocol. Secure version of HTTP: encrypts and decrypts pages containing
user requests as well as pages retrieved from a web server.
8.1.9 I
IAP
Internet Access Provider. See ISP.
IBS
Intelligent Base Station. There are 2 kinds of IBSs: one that can be installed indoors, one outdoors.
ICMP
Internet Control Message Protocol. Network protocol that provides error reports and information on the pro-
cessing of IP packets.
IMAP4
Internet Message Access Protocol. A protocol of the same type as POP3, the difference being that the
messages always stay on the ISP server, even after consultation. IMAP requires continuous access to the
server while the messaging service is in use.
IN
Installation Number
IP
Internet Protocol. The main protocol supporting the Internet. IP governs the forwarding and transmission of
data packets over supporting multivendor packet-switched networks.
IPSec
Internet Protocol Security. Standard taking network security into account. Protocol used in the implementa-
tion of VPNs, and for remote access by connection to a VPN.
ISDN
Integrated Services Digital Network. Standard for the transmission of digital data over telephone cables or
other communication vectors.
ISDN-EFM
Integrated Services Digital Network- Emergency Forwarding Module. T0/S0 Forwarding Module.
ISP
Internet Service Provider. Internet Access Provider. A company that provides Internet access for individuals
and companies, along with other services, such as web site construction and hosting.
ISVPN
Integrated Services Virtual Private Network. Protocol used in a private virtual digital network; it offers func-
tions such as transfer optimization and the transmission of information such as the name, busy status or di-
versions.
8-4
CPU PowerCPU and
n add-on module expansion
MEX PowerMEX boards.
; requires an HSL