AP-IP230 IP Phone Installation Guide Version 1.0
AddPac Technology Proprietary & Documentation
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Console
DTE interface whether the command is delivered to the host.
CoS
Class of Service (CoS) is a way of managing traffic in a network by grouping
similar types of traffic (for example, e-mail, streaming video, voice, large
document file transfer) together and treating each type as a class with its own
level of service priority. Unlike Quality of Service (QoS) traffic management,
Class of Service technologies do not guarantee a level of service in terms of
bandwidth and delivery time; they offer a "best-effort."
Decryption
The process of converting encrypted data back into its original form, so it can
be understood.
DHCP
Dynamic Host Configuration Protocol. A protocol which allows a host to obtain
configuration information, such as its IP address and the default router from a
server. This simplifies network administration because the software keeps
track of IP addresses. With DHCP device can have a different IP address
every time it connects to the network
DNS
Domain Name Server, an Internet service that translates domain names into
IP addresses.
DS-3
Digital signal level 3, A line capable of delivering 44.7 Mbps (44,700 Kbps) in
both directions
DSP
Digital Signal Processor. Dedicated microprocessor for digital signal process.
DTMF
Dual Tone Multi-Frequency. Using two types of voice-band tones for dialing.
E&M
An acronym for recEive and transmit or ear and mouth. E&M interface uses
a RJ-48 telephone cable to connect remote calls from an IP network to PBX
trunk lines (tie lines) for local distribution. It is a signaling technique for twowire
and four-wire telephone and trunk interfaces.
E1
The basic building block for European multi-megabit data rates, with a
bandwidth of 2.048Mbps.
Encryption
the manipulation of a packet's data in order to prevent any but the intended
recipient from reading that data.
Ethernet
Broadband LAN standard initiated by Xerox Corporation and co-developed by
Intel and DEC. Utilizing CSMA/CD and the various cables of 10Mbps are
used. It is similar to IEEE 802.3. Refer to: 10Base-2, 10Base5, 10Base-F,
10Base-T, 10Broad-36, Fast Ethernet, IEEE 802.3.
FAX
Short for "FACSimile." In essence, a fax machine sends an electronic
"facsimile" or copy of the document. An optical scanner in the machine scans
the document and the resulting bit stream is then sent to the receiving
machine via telephone line. The transmission and the reproduction at a
distance of still pictures printed matter and similar documented material
Frame
data that is transmitted between network points as a unit complete with
addressing and necessary protocol control information. A frame is usually
transmitted serial bit by bit and contains a header field and a trailer field that
