BARIX Streaming Client Manual de usuario descargar pdf (Pagina 18)

Now the TOS bits themselves:

• Delay - when set to '1' the packet requests low delay.

• Throughout - when set to '1' the packet requests high throughput.

• Reliability - when set to '1' the packet requests high reliability.

DSCP

DiffServ introduces the concept of the DiffServ Code Point (DSCP) that uses the ﬁrst 6 bits of the

TOS ﬁeld thereby giving 2^6 = 64 different values

The following table illustrates the DSCP values:

Stream to

There are up to 8 destinations to stream to. Each one can be directed to a device, or a multi- or

broadcast address (destination connection types) or be set up as a listener waiting for a

connection to be initiated by the other side (listener connection types). Each entry has its own IP

address and Port. See the following sections on how to set the “Stream to” entries.

Stream to Considerations

The choice of settings to distribute the stream to other devices depends on your environment and

desired functionality.

If the stream should be reliably received by just a few devices (up to 8) “raw TCP” can be used

since lost packets are retransmitted automatically. If you encounter too many audio blanks

(hiccups) then we recommend using RTP since lost packets are replaced by the “Streaming client”

ﬁrmware in the receiving “Exstreamer” device. This type is to be favored when the stream has to

pass a number of routers (WAN or Internet) as RTP is resilient to packet delays.

If the stream is intended to be received by many devices we recommend to use UDP broadcast as

long as all devices are on the LAN as a broadcast is no able to pass over a WAN.

If your receivers are behind routers using NAT (network address translation) we recommend to use

BRTP which can use port 80 and no change to the router is required. Only the router on the

“Instreamer” side has to have an open port 80 forwarding requests to the “Instreamer”.

If your network infrastructure is capable of multicasting use multicast (instead of multiple unicasts)

to reduce the trafﬁc generated.

A mix of all the above is possible as each of the 8 destinations allow the individual choice of the

18 Device Conﬁguration

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BARIX Streaming Client Manual de usuario Pagina 18