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Grandstream Networks, Inc. HT-386 User Manual Page 34 of 34
Firmware 1.0.3.64 Last Updated: 2/2007
TCP Transmission Control Protocol is one of the core protocols of the Internet protocol suite. Using
TCP, applications on networked hosts can create connections to one another, over which they can
exchange data or
packets. The protocol guarantees reliable and in-order delivery of sender to receiver
data.
TFTP Trivial File Transfer Protocol, is a very simple
file transfer protocol, with the functionality of a very
basic form of
FTP; It uses UDP (port 69) as its transport protocol.
UDP User Datagram Protocol (UDP) is one of the core protocols of the
Internet protocol suite. Using
UDP, programs on networked computers can send short messages known as
datagrams to one another.
UDP does not provide the reliability and ordering guarantees that
TCP does; 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
speech 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 the Internet. VoIP encompasses many protocols. All the protocols do some form of
signaling of call capabilities and transport of voice data from one point to another. e.g.: SIP, H.323, etc.