Avaya G250 Administration page 247

Note:
All CLI commands described in this section are available in the general context of
Note:
the CLI.
To view the configured thresholds:
1. Use the show rtp-stat thresholds CLI command. For example:
G350-001(super)# show rtp-stat thresholds
Item
--------------------
Codec Loss
Average Codec Loss
Codec RTT
Echo Return Loss
Loss
Average Loss
Remote Loss
Average Remote Loss
RTT
Local Jitter
Remote Jitter
SSRC Changes
Table 10 describes the QoS metrics on which thresholds are configured, and the time at which
each metric is evaluated.
Table 10: QoS metrics
Metric
codec loss
average-codec-loss
codec-rtt
echo-return-loss
Threshold
-------------
6.0%
3.0%
700mS
0dB
6.0%
3.0%
6.0%
3.0%
500mS
50mS
50mS
N/A
Description
The percentage of time the codec plays fill
frames due to lack of valid RTP frames.
Possible causes include jitter and packet loss.
The average codec loss measurement since
the beginning of the RTP stream.
An estimation of the overall Round Trip Time
(RTT) on the voice-channel, including the
network delay and internal delays.
Round Trip Time is the time taken for a
message to get to the remote peer and back to
the local receiver.
The echo cancellation loss on the TDM bus.
Configuring and analyzing RTP statistics
Event Threshold
-----------------
1
N/A
2
1
2
N/A
2
N/A
2
2
2
2
Evaluation time
Every RTCP
interval.
At the end of the
session.
Each time an RTCP
packet is received.
Every RTCP
interval.
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Issue 1.1 June 2005 247