Grandstream Networks GXP-2000 User Manual page 60

STUN
Simple Traversal of UDP over NATs, is a
(or multiple NATs) to find out its public address, the type of NAT it is behind and the internet
side port associated by the NAT with a particular local port. This information is used to set up
UDP communication between two hosts that are both behind NAT routers. The protocol is
RFC 3489
defined in
TCP
Transmission Control Protocol, is one of the core protocols of the
Using TCP, applications on networked hosts can create connections to one another, over which
they can exchange data or
sender to receiver data.
TFTP
Trivial File Transfer Protocol, is a very simple
a very basic form of
UDP
User Datagram Protocol (UDP) is one of the core protocols of the
Using UDP, programs on networked computers can send short messages known as
to one another. UDP does not provide the reliability and ordering guarantees that
datagrams may arrive out of order or go missing without notice. However, as a result, UDP is
faster and more efficient for many lightweight or time-sensitive purposes.
VAD
Voice Activity Detection or Voice Activity Detector is an algorithm used in
processing
wherein, the presence or absence of human speech is detected from the audio
samples.
VLAN
A virtual LAN, known as a VLAN, is a logically-independent network. Several VLANs can co-
exist on a single physical switch. It is usually refer to the IEEE 802.1Q tagging protocol.
VoIP
Voice over IP
VoIP encompasses many protocols. All the protocols do some form of signalling of call
capabilities and transport of voice data from one point to another. e.g: SIP, H.323, etc.
. STUN will usually work good with non-symmetric NAT routers.
packets
. The protocol guarantees reliable and in-order delivery of
FTP UDP
; It uses (port 69) as its
network protocol
file protocol
transfer
transport protocol
60
allowing clients behind
Internet protocol suite
, with the functionality of
.
Internet protocol suite
datagrams
TCP
NAT
.
.
does;
speech