ReliaTel Operator Training Release 4.1.1 Voice Quality Dashboard

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Operator Training – Release 4.1.1 Voice Quality DashboardOperator Training – Release 4.1.1 Voice Quality Dashboard

ReliaTel Operator Training

Release 4.1.1

Voice Quality Dashboard

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Training - Version 1.0


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Voice Quality (VoIP) Data

VoIP data collection – levels Center

General measure of the overall VoIP quality of service for your network at that node

Collector Detailed analysis of individual calls

VoIP data RTCP – Real Time Control Protocol

Capability to monitor RTP (Real Time Transport Protocol) Protocol used to evaluate VoIP transmissions

Passive QoS for other vendor collectors Alarms

Alarming optional Severities – CRI, MAJ, MIN, FYI

Alarming and QoS analysis Alarm List - Alarms are displayed here, with other entity alarms Voice Quality dashboard - QoS analysis is displayed in this dashboard

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Voice Quality Data (cont.)

VoIP Metrics MOS (mean opinion score)

Industry standard scale equating voice quality to perception by the human ear Good - 4 and above Fair – 3.6 – 3.9 Poor – 3.1 – 3.8 Unacceptable - <3.1

Latency Time it takes a voice packet to traverse the network

Jitter Excess variation in voice packet transmission from a standard interval

Loss (network loss, total loss, packet loss) Voice packets lost during transmission

VoIP metric alarm rules initiated by the ReliaTel Administrator

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Center Performance Dashboard

VoIP data by center

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Center Performance Dashboard Portlets

User Experience by Collector MOS scores only Collectors with the worst average MOS scores

QoS Alarms Counts number of active and acknowledged alarms Analyzed by:

Collector Alarm type

Collector QoS Performance Metrics All collectors in the selected center or subcenter included All RTCP/CDR metrics reported Bad Streams = < 3.6 MOS

Endpoint QoS Performance Metrics All RTCP/CDR metrics reported Bad calls = < 3.6 MOS Maximum 25 worst-performing endpoints, based on average MOS score

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Center Performance Dashboard – Additional Info

Data displayed Snapshot of the last 60 minutes Data is static Refreshing the dashboard displays another 60 minute period of data

Refresh options Browser Refresh button

Calls and Streams The terms ‘calls’ and ‘streams’ appear in the interface

A call includes both sides of the voice transmission. This occurs between two endpoints; data is collected for both directions.

A stream is one side of a call; the QoS evaluation is for one direction only, between endpoint 1 and endpoint 2.

Endpoint QoS metrics The metrics displayed in the interface are for the QoS evaluation for the

call being received QoS metrics reported for endpoint 1 are the metrics for the stream being

received from endpoint 2.

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Center Performance Dashboard – View by Type

View by options (type and device) – RTCP, PQoS, CUCM, Lync, All

View by device - CUCM and Lync

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Collector – Scatter Plot Dashboard

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Open from collector fly-out menu


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Call Scatter Plot Dashboard (cont.)

Displays individual streams as plots on a graph Average MOS score of stream determines location on graph Stream status

Active stream – circle Completed stream – diamond

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Collector – Scatter Plot with Details

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Draw selection box and click View Details

Selection box

Detailed call metrics from selected box


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Collector – Scatter Plot with Details (cont.)

Call Details table Open from Scatter Plot; QoS data in tabular format Drawing a selection box on the graph selects streams for the Call Details

table Expanding the dashboard – loss of functionality

In expanded state View Details button and selection boxes are hidden Call Details table cannot be opened when expanded

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Collector – Live View Dashboard for VoIP Collectors

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Open from VoIP collector fly-out menu Note: Lync and CUCM collectors – live view not available; completed calls

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Live View Dashboard – VoIP Collectors

Six separate graphs Four QoS graphs

MOS Latency Jitter Loss

Two non-QoS graphs Total number of streams being analyzed Number of alarms

Data flow Data is live; continuous streaming (not 60 minute ‘snapshot’) Plot window is approximately 18-20 minutes

Single collector (not center or subcenter) Continuous streaming

Buffer (Pause) Back fill when streaming resumes

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Collector – Active Calls Dashboard

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Open from VoIP collector fly-out menu – active and completed calls Open from Lync and CUCM collectors – completed calls only


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Active Calls Dashboard

Dashboard tracks ongoing, active calls and calls completed for VoIP collectors; omits active calls for Lync and CUCM collectors.

Dashboard time period - last 60 minutes from time when dashboard was opened

Each call is a single row Refresh option

Ranges from Never to 60 minutes Setting automatically refreshes the data, manually refreshing is not

necessary

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Active Calls Dashboard (continued)

VoIP - drill down from an active or completed call record Lync and CUCM – drill down from a completed call record

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Active Calls Dashboard – Call Summary

Call Summary page Top section– Call Summary

Active call (VoIP) - Basic QoS metrics Completed call (VoIP/Lync/CUCM) - Expanded QoS metrics

Bottom section – Call Path/Call Details Records Route (IP addresses) a call takes between endpoints

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Active Calls Dashboard – Live View – VoIP Collector

Live View page Open from an active call in the Active Calls dashboard Four QoS charts

MOS, Latency, Jitter, Loss Trend lines track metrics for each endpoint (not Min/Max or Max/Avg)

Call Path details – measures round trip for packets

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Active Calls Dashboard Filter – VoIP Collector

Call filter Active Calls dashboard shows only this call

Right click on call to open Call Summary or Live View for that call

Click the ‘Clear Filter’ icon to return to the full active calls display

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Printing and Saving Dashboard Graphs/Charts

Printing a graph/chart Right click on the graph and select Print Chart

Saving a graph/chart Right click on a graph and select a file format Live View charts cannot be saved

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Dashboard Management Techniques

Opening center and collector views Left-click – tab replacement Right-click – opens new tab, existing tab(s) still displayed

Tab management Close tab

Save tab

Open tab in new browser window

Additional management techniques (for tables) Split-column menu Filter (upper right corner of window)

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Drill-down Techniques from Performance Dashboard

From the Collector QoS portlet

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Left-click – VoIP/Lync/CUCMRight-click – VoIP – as shownRight-click – Lync/CUCM – Scatter Plot only


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Drill-down Options from the Performance Dashboard

From the Endpoint QoS portlet

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Left-click: Endpoint Scatter Plot Left-click: Collector Scatter Plot


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Drill-down Options from the Performance Dashboard

From the Endpoint QoS portlet Scatter Plot – VoIP/Lync/CUCM Live View and Traceroute - VoIP collectors only

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Right-click: Source Endpoint menu

Right-click: Collector

ReliaTel Operator Training Release 4.1.1 Voice Quality Dashboard

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