Polycom 1500/1800/2000/4000 manual Milliseconds derived from the Rtcp report

Conference and Participant Monitoring

The following parameters are displayed:

Participant Properties - Channel Status Parameters

Field	Description
Channels Used	When checked, indicates the channel type used by the participant to connect to the
	conference: Incoming channels are endpoint to MCU, Outgoing channels are from
	MCU to endpoint.
	Channels:
	• H.225/Signaling - The call-signaling channel.
	• H.245/SDP - The Control channel.
	• Audio in - Incoming audio channel
	• Audio out - Outgoing audio channel
	• Video in - Incoming video channel
	• Video out - Outgoing video channel
	• Content in - H.239/People+Content conferences
	• Content out - H.239/People+Content conferences
	• FECC in - The incoming FECC channel is open.
	• FECC out - The outgoing FECC channel is open.
	Columns:
	• Faulty – A red exclamation point indicates a faulty channel condition. This is a
	real-time indication; when resolved the indication disappears. An exclamation
	point indicates that further investigation may be required using additional
	parameters displayed in the Advanced Channel Status tab.
	• Bit Rate – The actual transfer rate for the channel. When channel is inactive, bit
	rate value is 0. For example, if the participant is connected without video, the bit
	rate for the video channel is 0.
	Note: The CTS Audio Auxiliary channel is used only for Content. In all other
	cases, the bit rate shown in this column for this channel is 0.
	• Packet Loss – The accumulated count of all packets that are missing according
	to the RTCP report since the channel was opened. This field is relevant only
	during the connection stage and does not display faulty indications.
	• Fraction Loss (Peak) – The ratio between the number of lost packets and the
	total number of transmitted packets since the last RTCP report. Peak (in
	parentheses) indicates the highest ratio recorded since the channel was opened.
	• Number of Packets – The number of received or transmitted packets since the
	channel has opened. This field does not cause the display of the faulty indicator.
	• Jitter (Peak) – Displays the network jitter (the deviation in time between the
	packets) as reported in the last RTCP report (in milliseconds). Peak (in
	parentheses) reflects the maximum network jitter since the channel was opened.
	• Latency – Indicates the time it takes a packet to travel from one end to another
	in milliseconds (derived from the RTCP report).
	High latency value may indicate that there is a problem in the network, or that
	the endpoint is sending an incorrect RTCP values.

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