Siemens 60, 80, 40, 20 manual Glossary QoS, Qdc

Glossary

Q

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 OpenStage 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.

ROM

Read Only Memory. Memory with read only access.

RTCP

Realtime Transport Control Protocol. Controls the ->RTP stream and provides information 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 con- ferences. 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.

A31003-O1010-M100-9-76A9, 05/05/2008	X-5
HiPath 8000 - OpenStage Family, Administration Manual