Metric
Description
Evaluation time
the CLI command
rtp-stat min-stat-
win
.
Average Loss
The average packet loss evaluation since the
beginning of the RTP stream
At the end of the
session
Remote Loss
The network loss according to the remote RTP
receiver. The device learns of the remote
packet loss from received RTCP messages.
Each time an RTCP
packet is received
Average Remote
Loss
The average remote network loss
measurement since the beginning of the RTP
stream
At the end of the
session
RTT
The network RTT. This metric does not
include internal delay. The device learns of the
RTT from RTCP messages.
Each time an RTCP
packet is received
Local Jitter
Variation in delay of packet delivery to the
local peer
Every RTCP interval
Remote Jitter
Variation in delay of packet delivery to the
remote peer. The device learns of the remote
jitter from RTCP messages.
Each time an RTCP
packet is received
SSRC Changes
The number of times the RTP SSRC field in
received RTP packets has changed
Every RTCP interval
RTP statistics thresholds
About this task
RTP statistics thresholds should be configured so that incrementation of QoS event counters
coincides with real detectable bad QoS in your network. Optimal values are different for each
network. Configure any thresholds that are not already configured as you require them. See
Viewing RTP statistics thresholds
For a description of each metric, see
on page 351. The Codec metrics, Codec
loss and Codec RTT are useful for evaluating the actual user experience. The other metrics
are useful for identifying network problems that contribute to QoS problems experienced by
the user. For example, the Codec RTT metric indicates the overall delay experienced by the
user. If you configure a meaningful threshold on the Codec RTT metric, metrics such as Local
Jitter, Remote Jitter, and rtt metrics may help you identify causes when Codec RTT exceeds
its threshold.
Related topics:
Configuring RTP statistics thresholds
on page 352
Configuring RTP statistics thresholds
Procedure
1. Use the
rtp-stat thresholds
command to set thresholds on QoS indicators.
Monitoring applications
352 Administering Avaya G430 Branch Gateway
October 2013
Summary of Contents for G430
Page 1: ...Administering Avaya G430 Branch Gateway Release 6 3 03 603228 Issue 5 October 2013 ...
Page 12: ...12 Administering Avaya G430 Branch Gateway October 2013 ...
Page 246: ...VoIP QoS 246 Administering Avaya G430 Branch Gateway October 2013 Comments infodev avaya com ...
Page 556: ...IPSec VPN 556 Administering Avaya G430 Branch Gateway October 2013 Comments infodev avaya com ...