MOCET IP3072 - Manual (Page 78)

Page 78
MOCET IP3072 Smart Office IP Desk Phone User Guide
TOS Type of Service: A method of setting precedence for a particular
type of traffic for QoS.
UDP User Datagram Protocol. An unreliable networking layer that sits
at the same level of the networking stack at TCP. UDP is a
connectionless transport protocol that is part of a suite of protocols
(the others being RTP and IP) that allow for the timely and
efficient transfer of voice data across and IP network. UDP is the
better transport protocol for VoIP data than TCP.
VAD Voice Activity Detection (VAD) helps save bandwidth during calls.
Examples: When your making a VoIP call and your not speaking
and your listening, that silence is still taking up bandwidth during
the call. When silence is detected by VAD software over a
predetermined length of time, is sends silent packets that inform
other VAD enabled systems to stop holding the bandwidth for
these empty packets.
VoIP Voice Over Internet Protocol: VoIP is based on the principal of
transmitting digitized voice packets over networks. Basically, VoIP
consists of converting voice signals into streams of digital packets
and sending those packets of data through an IP-constructed
network environment. VoIP can work in both LAN (local area
network) and WAN (wide area network) environments for
intranetwork or internetwork communication between VoIP
channel users. Routers and switches and other special
compression protocols direct the packetized voice data to their
destination IP address. VoIP can be less expensive than voice
transmission using standard analog packets over POTS (Plain Old
Telephone Service). It allows telephone calls, faxes, or overhead
paging to be transported over an existing IP data network
topology.
VPN Virtual Private Network(VPN) is a virtual created sub-network
based on a public real network. A type of technology designed to
increase the security of information transferred over the Internet.
VPN can work with either wired or wireless networks, as well as
with dial-up connections over POTS. VPN creates a private
encrypted tunnel from the end user's computer, through the local
wireless network, through the Internet, all the way to the corporate
servers and database.
AN Wide Area Network: For global or long distance networking
access thru the support of telecommunication devices. A
communication system of connecting PCs and other computing
devices across a large local, regional, national or international
geographic area. Also used to distinguish between phone-based
data networks and Wi-Fi. Phone networks are considered WANs
and Wi-Fi networks are considered Wireless Local Area Networks
(WLANs).
WLAN Also referred to as LAN. A type of local-area network that uses
high-frequency radio waves rather than wires to communicate
between nodes.
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