H3C Technologies H3C Intelligent Management Center - Manual (Page 91)

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11 Evaluating VoIP QoS
VoIP QoS Evaluation allows operators to manage test devices and test tunnels and to view test results.
They can view the QoS information of a VoIP network, including performance of test tunnels and detailed
information about faulty tunnels.
Managing QoS information
This function provides detailed QoS information, including top 5 faulty tunnels, top 5 low-quality tunnels,
top 5 middle-quality tunnels, top 5 high-quality tunnels, test result summary, and latest test results.
Viewing QoS information
1. Click the Service tab.
2. Select Voice Service Manager > VoIP QoS Evaluation > QoS Info from the navigation tree.
Querying QoS information
1. On top of the QoS Information page, select a time range from the Time Range list. Options are Last
hour, Today, Yesterday, This week, Last week, This month, Last month, This year, Last year, and
Custom. Specify the start time and end time if you select the Custom option:
{
From—Specify the start date and time.
{
To—Specify the end date and time.
2. Click Query to display the QoS information from the test results within the specified time range.
Test result – top 5 fault tunnels
This bar chart shows the top 5 faulty tunnels by conformance rate within the query time range
(Conformance rate = Fault test results/Total tests).
The horizontal axis lists the faulty tunnels, and the vertical axis indicates the conformance rate in
percentage.
You can hover the cursor over a bar to see its details in the form of (source device label-destination device
label, test tunnel) = conformance rate. Click a bar to view the trend charts for the tunnel's MOS, delay,
jitter, and packet loss ratio for the last 24 hours.