Appendix E - Participant Properties Advanced Channel Information - Polycom realpresence 1800 Administrator's Manual

Appendix E - Participant Properties
Advanced Channel Information
The following appendix details the properties connected with information about audio and video parameters,
as well as, problems with the network which can affect the audio and video quality.
Participant Properties - Channel Status Advanced Parameters
Field
Media Info
Algorithm
Frame per packet
(audio only)
Resolution
(video only)
Frame Rate
(video only)
Annexes
(video only)
Channel Index
RTP Statistics
Actual loss
Polycom®, Inc.
Description
Indicates the audio or video algorithm and protocol.
The number of audio frames per packet that are transferred between the MCU
and the endpoint. If the actual Frame per Packets are higher than Frame per
Packets declared during the capabilities exchange, a Faulty flag is displayed.
Indicates the video resolution in use. If the actual resolution is higher than
resolution declared in the capabilities exchange, the Faulty flag is displayed.
For example, if the declared resolution is CIF and the actual resolution is 4CIF,
the Faulty flag is displayed.
The number of video frames per second that are transferred between the MCU
and the endpoint.
Indicates the H.263 annexes in use at the time of the last RTCP report. If the
actual annexes used are other than the declared annexes in the capabilities
exchange, the Faulty flag is displayed.
For Polycom Internal use only.
The number of missing packets counted by the IP card as reported in the last
RTP Statistics report. If a packet that was considered lost arrives later, it is
deducted from the packet loss count. Packet loss is displayed with the following
details:
• Accumulated N - number of lost packets accumulated since the channel opened.
• Accumulated % - percentage of lost packets out of the total number of packets
transmitted since the channel opened.
• Interval N - number of packets lost in the last RTP report interval (default interval is
5 minutes).
• Interval % - percentage of lost packets out of the total number of packets transmitted
in the last RTP report interval (default interval is 5 minutes).
• Peak - the highest number of lost packets in a report interval from the beginning of
the channel's life span.
967