System information

Deployment Guide for Siemens Enterprise Communications OpenScape Environments
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2 Modify the following fields:
○ Enable Check this option to enable the configuration and use of the QoS settings. When un-
checked, the values of the Differentiated Services Code Point (DSCP) bits in the IP packet
headers are zero.
○ Type Choose a method for encoding packet priority. The priority you set here for audio and
video packets must match the priority set in the router. You can choose from the following
options:
» DiffServ Choose this option when the network router uses DiffServ for priority encoding.
The default priority for both audio and video packets is 0x88. These values are determined
by the QOS_IP_VIDEO and QOS_IP_AUDIO flags in the system.cfg file.
» Precedence This is the default mode and is capable of providing priority services to all
types of routers, as well as being currently the most common mechanism. Use this option
when the network router uses Precedence for priority encoding, or when you are not sure
which method is used by the router. Precedence needs to be combined with None in the
TOS field. The default priority is 5 for audio and 4 for video packets.
Audio / Video You can prioritize audio and video IP packets to ensure that all participants in
the conference hear and see each other clearly. Choose a scale from 0 to 5, where 0 is the
lowest priority and 5 is the highest. The recommended priority is 4 for audio and 4 for video to
ensure that the delay for both packet types is the same and that audio and video packets are
synchronized and to ensure lip sync.
○ TOS Choose the type of service (TOS) that defines optimization tagging for routing the
conferences’ audio and video packets. Choose from the following options:
» Delay The recommended option for video conferencing. Prioritized audio and video
packets tagged with this definition are delivered with minimal delay because the throughput
of IP packets minimizes the queue sequence and the delay between packets.
» None No optimization definition is applied. This is a compatibility mode in which routing is
based on Precedence priority settings only. Select None if you do not know which standard
your router supports.
Configuring the SIP Servers
This section shows you how to configure the RMX to connect to the SIP server.
To configure the RMX to connect to the SIP server:
1 Click SIP Servers.
The SIP Servers settings display, shown next.