Optelecom-nkf Siqura C-54 E-MC User Manual page 48

Using the internal web pages
Transmitter #
DSCP field
Connection priority
Multicast time to
live
RTP control mode
Stream type
RTP type
Link lost alarm
timeout
Note on Differentiated Services: Differentiated Services (DiffServ, or DS) is a method for adding QoS
(Quality of Service) to IP networks. In routed networks, critical network traffic, such as video streams,
which require a relatively uninterrupted flow of data, can get blocked due to other traffic. DiffServ can be
used to classify network traffic and give precedence - i.e. low-latency, guaranteed service - to high-
priority traffic, while offering best-effort service to non-critical traffic such as file transfers or web traffic.
Each stream has a DSCP (Differentiated Services Code Point) field in the IP header. Routers will identify
the network service type in the DSCP field and provide the appropriate level of service. Low-latency
service can be realized, for example, through priority queuing, bandwidth allocation, or by assigning
dedicated routes.
Figure 7.18 Advanced section, Transmitter # settings
[0-63]. DSCP (Differentiated Services Code Point) uses the first 6
bits of the ToS (Type of Service) field in the header of IP packets for
packet classification purposes. The bit pattern in the field indicates
the type of service and forwarding behavior at the next node. With
6
2 bits, up to 64 network service types can be defined.
describes the Differentiated Services (DS) field and the DiffServ
Code Point. See also the note on Differentiated Services below.
Parameter intended for use with the MX Software Development Kit.
[0...127]. Specify the number of routers (hops) that multicast traffic
is permitted to pass through before expiring on the network.
Select the transport protocol to control the stream.
- None Selected automatically when using VLC or
QuickTime, for example.
- FloodGuard See the note on this subject (in this section).
- RTCP Real-Time Control Protocol. Gives feedback to each
participant in an RTP session that can be used to
control the session.
The ES + UDP + RTP + NKF option will add an extended RTP header
for Optelecom-NKF applications requiring extra information.
This setting is NOT to be changed.
[1...1000] s. Time in seconds before alarm sent; default=10s.
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RFC 2724