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• TOS: This parameter allows the configuration of the Type-Of-Service (TOS) byte in the
IP header (also known as the Differentiated Services – DS – field). Valid values are
between 0 and 255. Configuring this is only useful if the downstream router is
configured to honor the field.
• TTL: This parameter allows the configuration of the Time-To-Live (TTL) byte in the IP
header. Valid values are between 0 and 255. If not explicitly configured, it defaults to
128. This field controls how many hops the packet can traverse before it is dropped by a
router. The default value of 128 is suitable for virtually all applications.
• DF Bit: This parameter allows the configuration of the Do-not-Fragment (DF) bit in the
IP header. The 9220 will never produce fragmented packets, and with the UDP payload
set to 7 transport packets, the IP packets are guaranteed to fit inside the Ethernet MTU.
This control is provided for compatibility with legacy switches/routers. Some legacy
equipment may exhibit performance problems if this bit is not set. This is not an issue
with current network equipment.
• RTP: If this box is checked, the 9220 will include RTP (Real Time Protocol) headers in
the output flow. If it is not checked, the transport stream will be sent over UDP/IP
without any additional headers. Note that RTP requires the use of even UDP port
numbers.
Once the configuration information is filled in, click on the Apply button to make it active. If
there are no errors, the port will be created, and the configuration area disappears. If any errors
are detected, they will be displayed at the top of the Apply button. Two types of errors can be
reported:
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Advanced
Parameters
9220-UM V1.2
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