VBrick Systems VB5000, VB6000, VB4000 manual Receive Address

	MPEG-2 Configuration
Receive Address	Allows the user to specify how the receive address will be
Mode	configured: IP address, Host Name, or Program Name. If Program
	Name, select from the dropdown list of Available Programs.
Available Programs	Select from dropdown list of available programs. This automatically
	populates Receive IP Address and Source IP Address.
Receive Host Name	Sets the source for video by using the Host Name. This parameter
	can be used only for a unicast source.
Receive IP Address	In multicast mode, this parameter defines the IP address of the
	stream to be decoded and displayed. In unicast mode, this
	parameter is optional. If left blank, the decoder will accept all data
	received on the receive IP port. If set, decoder will communicate
	with any VBrick that has the encoder "unicast poll" option set, and
	instruct it not to transmit it's stream unless this VBrick has this
	receive IP Address.
Receive Port	The receive port designates what local IP/UDP port is assigned to
	listen for incoming video.
Receive Mode	This read-only parameter informs the operator whether the selected
	receive IP Address is Unicast or Multicast.
Packet Ordering	The identification number in the IP header determines IP packet
	ordering. The packet ordering feature lets the VBrick re-order
	packet fragments as they arrive. If you disable packet ordering, the
	out-of-order packets are simply discarded. Packet ordering may
	increase latency and can add up to 100 ms of additional delay.
Jitter Queue	Delay jitter is defined as the variation of the delays with which
	packets traveling on a network connection reach their destination.
	During exceptionally long periods of delay, a large quantity of video
	packets will be buffered in the network. When the situation that
	caused the delay is resolved, the buffered frames will be burst, as a
	group, to the decoder. The handling of delay jitter is then a problem
	of having enough buffering in the decoder to handle a long delay,
	allowing the video to seem uninterrupted, and enough capacity in
	the buffer to handle the subsequent burst that follows once the
	delay has terminated. Typically, long delays in the network are
	associated with packet loss. No amount of buffer at the VBrick will
	correct packet loss. When first enabled, the jitter Q buffers 85ms of
	the video stream. Once the jitter Q has been filled, the jitter queue
	meters out the buffered video to the decoder at a rate equal to the
	rate of the video stream. The jitter queue is drawn down during
	times of packet drought, allowing the video to seem uninterrupted,
	but is large enough to handle the subsequent 85ms burst of packets
	that result once the drought is over. The impact of enabling the
	jitter queue is that a 85ms delay is imposed on the video stream.
SAP IR Program	Enables or disables the ability of the operator to select the program
Guide	guide feature from his IR remote control.

VBrick MPEG-2 Appliance Admin Guide 21