Siemens A31003-D3000-M100-01-76A9 Administrator User Manual page 243

A31003-D3000-M100-01-76A9, 02-2013
OpenScape Desk Phone IP, Phone Administration, Administrator Documentation
QoS
Quality of Service. 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 OpenScape Desk Phone allows for the setting of QoS parameters
on layer 2 and layer 3 (DiffServ).
QDC
QoS Data Collection. A HiPath IP service that is used to collect data from HiPath
products in order to analyze their voice and network quality.
QCU
Quality of Service Data Collection Unit. A service tool that collects QoS report
data from IP endpoints.
QoS
Quality of Service. Provides different priority to different users or data flows, or
guarantee a certain level of performance to a data flow.
R
RAM
Random Access Memory. Memory with read / write access.
RTCP
Realtime Transport Control Protocol. Controls the RTP stream and provides infor-
mation about the status of the transmission, like QoS parameters.
RTP
Realtime Transport Protocol. This application layer protocol has been designed
for audio and video communication. Typically, the underlying protocol is UDP.
S
SDP
Session Description Protocol. Describes and initiates multimedia sessions, like
web conferences. The informations provided by SDP can be processed by SIP.
SIP
Session Initiation Protocol. Signaling protocol for initialising and controlling
sessions, used e. g. for VoIP calls.
SNMP
Simple Network Management Protocol. Used for monitoring, controlling, and
administration of network and network devices.
Glossary
Example Dial Plan
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