bkglos.fm
A31003-S2000-M102-3-76A9, 08/07/2009
Asterisk - OpenStage Family, Administration Manual
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Nur für den internen Gebrauch
Glossary
PSTN
P
ublic
S
witched
T
elephone
N
etwork. The network of the world's public circuit-switched
telephone networks.
Q
QoS
Q
uality
o
f
S
ervice. The term refers to control mechanisms that can provide different priority to
different users or data flows, or guarantee a certain level of performance to a data flow in
accordance with requests from the application program. The OpenStage phone allows for the
setting of QoS parameters on layer 2 and layer 3 (DiffServ).
QDC
Q
oS
D
ata
C
ollection. A HiPath IP service that is used to collect data from HiPath products
in order to analyze their voice and network quality.
QCU
Q
uality of Service Data
C
ollection
U
nit. A service tool that collects QoS report data from
IP endpoints.
QoS
Q
uality
o
f
S
ervice. Provides different priority to different users or data flows, or guarantee
a certain level of performance to a data flow.
R
RAM
R
andom
A
ccess
M
emory. Memory with read / write access.
ROM
R
ead
O
nly
M
emory. Memory with read only access.
RTCP
R
ealtime
T
ransport
C
ontrol
P
rotocol. Controls the ->RTP stream and provides information
about the status of the transmission, like QoS parameters.
RTP
R
ealtime
T
ransport
P
rotocol. This application layer protocol has been designed for audio
and video communication. Typically, the underlying protocol is ->UDP.
S
SDP
S
ession
D
escription
P
rotocol. Describes and initiates multimedia sessions, like web con-
ferences. The informations provided by SDP can be processed by ->SIP.