Avaya G430 Manual page 352

Monitoring applications
Metric
Average Loss
Remote Loss
Average Remote
Loss
RTT
Local Jitter
Remote Jitter
SSRC Changes
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
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
Procedure
1. Use the rtp-stat thresholds command to set thresholds on QoS indicators.
352 Administering Avaya G430 Branch Gateway
the CLI command
win .
The average packet loss evaluation since the
beginning of the RTP stream
The network loss according to the remote RTP
receiver. The device learns of the remote
packet loss from received RTCP messages.
The average remote network loss
measurement since the beginning of the RTP
stream
The network RTT. This metric does not
include internal delay. The device learns of the
RTT from RTCP messages.
Variation in delay of packet delivery to the
local peer
Variation in delay of packet delivery to the
remote peer. The device learns of the remote
jitter from RTCP messages.
The number of times the RTP SSRC field in
received RTP packets has changed
Configuring RTP statistics thresholds
Comments? infodev@avaya.com
Description
rtp-stat min-stat-
on page 350.
QoS metrics on page 351. The Codec metrics, Codec
on page 352
Evaluation time
At the end of the
session
Each time an RTCP
packet is received
At the end of the
session
Each time an RTCP
packet is received
Every RTCP interval
Each time an RTCP
packet is received
Every RTCP interval
October 2013