Operation Manual

Gigaset DE700 IP PRO / en / A31008-M2211-R101-5-7619 / web_configurator.fm / 13.09.2012
PRO Version 3, 30.05.2012
125
Configuring phone settings via the Web configurator
QoS settings (Quality of Service)
On this screen you can optimise the voice quality of your IP telephone.
The voice quality depends on the priority of the voice data in the IP network. Prioritising the
VoIP data packets is done using the QoS protocol DiffServ (Differentiated Services). DiffServ
defines a number of classes for the quality of service and, within these classes, various priority
levels for which specific prioritisation procedures are defined.
You can specify different QoS values for SIP and RTP packets. SIP packets (Session Initiation
Protocol) contain the signalling data, while RTP (Real-time Transport Protocol) is used
for the voice transfer.
Settings
¢ Network and Connections ¢ QoS Settings
¤ Enter your chosen QoS values in the SIP ToS/Diffserv (0..63) and RTP ToS/Diffserv (0..63)
fields. Value range: 0 - 63.
Common values for VoIP (default setting):
Saving settings
¤ Click on Save to save your settings on the QoS Settings screen.
SIP 34 High service class for fast switching of the data flow
(Expedited Flow)
RTP 46 Highest service class for fast forwarding of data packets (Expedited For-
warding)
Warning
Do not change these values without consulting your network operator first. A higher value
does not necessarily mean a higher priority. The value determines the service class, not
the priority. The prioritisation procedure used in each case meets the requirements of this
class and is not necessarily suitable for transferring voice data.
Detailed information on the Diffserv protocol can be found in RFC 2474
and RFC 3168.