8.4 D
DAP
DECT Access Point
DASS2
Digital Access Signaling Specification number 2
DDI
Direct Dialing In. Direct external call number for the system terminals (depending on the configuration with
the public network operator).
DECT
Digital Enhanced Cordless Telecommunication. European cordless telephony standard. DECT terminal:
cordless terminal that complies with this standard.
DHCP
Dynamic Host Configuration Protocol. Protocol that manages IP address allocation dynamically so that
addresses can be reassigned when no longer being used by LAN hosts.
Direct RTP
A feature which optimizes the RTP flow of VoIP in SIP, thus optimizing the number of VoIP CODEC
resources.
DISA
Direct Inward Station Access. Services (Analog DISA and Transit DISA) enabling outside callers to dial a
specific number giving direct access to the system.
DLL
Dynamic Link Library. Windows library linked dynamically to an application.
DLT0
Digital Line T0. Basic access configured with the QSIG protocol (= digital LIA).
DLT2
Digital Line T2. Private 2 MHz link in PRA mode (= digital ATL).
DNS
Domain Name Server. System used on the Internet for converting domain names or machine names into IP
addresses. A domain name, unlike an IP address, is an easily memorized Internet address.
8.5 E
ECMA
European Computer Manufacturers Association
Entity
In this PBX context, an Entity refers to a group of users.
ETHERNET
Local network (LAN) operating at 10 or 100 Mbps (10 base T or 100 base T) over a coaxial cable. Ethernet
is similar to the IEEE 802.3-series standards.
8.6 F
FoIP
Fax over IP. Refers to the message and data transmission from a G3 Fax using the Internet protocol (T38
or Fax over G711 with SIP).
FTP
File Transfer Protocol. Standard protocol for exchanging files between remote computers over the Internet.
FTP/STP/UTP
Foiled Twisted Pairs/Shielded Twisted Pairs/Unshielded Twisted Pairs. Types of connection cables to be
used between an Alcatel-Lucent OmniPCX Office Communication Server and an external distribution panel.
8-3
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