C-6
Appendix
C
Glossary
RTP (Real
RTP (Real--time
time TTransport Protocol
ransport Protocol))
An Internet protocol sending real-time data such as audio and video. Although RTP itself does not
guarantee real-time transmission, transmission application programs provide devices for streaming
data support. In general, RTP works on UDP protocol.
Slow Start
Slow Start
A type of
H.323
signaling. It exchanges all information through a connection at the Q931 connec-
tion stage, and connects to
H.245
followed by a media connection.
Subnet Mas
Subnet Maskk
32-bit address mask used in
IP
to indicate the bits of an
IP Address
that are being used for the
subnet address. Sometimes referred to simply as mask.
Trivial File Transfer Protocol
Trivial File Transfer Protocol ((TFTP
TFTP))
A simpler version of
File Transfer Protocol (FTP)
that uses UDP (User Datagram Protocol)
rather than TCP (Transmission Control Protocol) for data transport. It is easier to program than
FTP but lacks directory and authentication services. It is often used to allow diskless workstations
to boot over the network.
Type o
Type of Service
f Service ((TOS
TOS))
TOS parameters consist of three bits, which are used to set services on Delay, Throughput and Re-
liability.
Delay (4)
Delay (4)
Throughput
Throughput (2)
(2)
Reliability (1)
Reliability (1)
Set
Low
High
High
Clear
Normal
Normal
Normal
