Charts

Charts

Charts are used to plot various data sources like number of concurrent calls or quality of calls over time. Data sources can be combined to one chart allowing the viewer to see the correlation of desired data sources like SIP 4XX/5XX responses on ASR. The graph itself is interactive – clicking on a particular legend hides the datasource. Hovering on a datasource highlights it and shows the local value.

Charts are also present in the CDR window in the right mini-window sharing the same functionality with only difference that in CDR section the graph takes data from the current filter.

Add chart

To create new graph click on the + button.

Chart configuration

Chart configuration contains three tabs at the top – base chart data, filters – common and filters – rtp. The filters tab is used to filter data sources by various criteria – for detailed description please refer to CDR chapter.

The chart configuration panel is divided to three sections. Date range, series and description.

Templates

template field contains predefined chart configurations and custom templates which you can create / modify. To create new template - write name of it to description title field which shows save template button next to templates combo box.

Date range

• Time interval

• Time axes is density on the X axis.

series

Series section contains data sources for the charts.

series column

Series column chooses which data source will be plotted.

• number of calls shows min/max/avg simultaneous calls distribution and total calls distribution

  

  *MOS / jitter / delay / packet loss shows RTP statistics *RTCP shows RTCP protocol values*ACD, ASR, PDD, SIP responses shows signalization related values*codecs shows codec distribution*CallPerSec shows Calls Per Second (CPS) rate over time - use the CallPerSec template for quick CPS visualization

• ACD average shows averaged call duration for all calls which started in the given interval.

• ACD immediate shows averaged call duration for all calls which are ongoing in the given interval. Thus this chart will show higher ACD for short intervals.

param

Param column specifies SIP response code

axis side

Axis side is used to assign data source to the left Y axis or to the right Y axis.

primary

Primary checkbox is used in case where more datasources are drawn on left or right Y. The primary checked datasource fills the whole Y axe and non-primary datasources use that scale. Here is example:

type

Type of graph

Line

Decoration for line type chart

Color

Color of chart

Fill / Markers / Smooth

• Fill fills area below the line type chart
• Markers plot dots at line
• Smooth draw smoothes line instead of straight lines between points

Description

Description names graph, axis and sets legend position (top/left/right/bottom or no legend).

Setting your own title will allow to save a created graph for repetitive use. Once the title is filled or changed, the save button will appear next to type chart.

Using Groups to Filter Charts by Provider

IP groups allow you to efficiently filter charts by specific providers or destinations without manually configuring individual IP addresses for each chart. This is the recommended approach for monitoring multiple providers.

Step-by-Step: Charting Jitter for a Specific Provider

1. Create IP Groups:

• Navigate to GUI → Groups → IPs
• Click "New group"
• Enter a group name for your provider (e.g., "Provider A Trunk")
• Add the provider's IP addresses or CIDR ranges, one per line
• Save the group

Repeat for each provider you want to monitor.

1. Create the Chart:

• Navigate to CDR tab in the GUI
• Click the Charts button
• Click the + button to create a new graph

1. Configure the Data Source:

• In the Series table, select "MOS / jitter / delay / packet loss" as the series type
• Set axis side (Left or Right) as needed

1. Apply the IP Group as a Filter:**

• Go to the Filters - common tab
• In the "Group Filters" section, select your IP group from the "Called Groups" or "Caller Groups" dropdown

1. Optional: Filter for Successful Calls:

• In the Filters - common tab, add a filter for "Last SIP response = 200" to chart only successful calls

1. Optional: Compare Multiple Providers:**

• Add additional series to the same chart
• For each series, apply a different IP group filter
• Use the tools icon (settings icon) next to the filter to name each series
• The names will appear in the chart legend for easy identification

This approach allows you to monitor jitter, MOS, delay, and packet loss across multiple providers on a single chart or create separate charts for each provider.

Filters - common

Filters CDR data in the same way as CDR filter formular except date range which is in the first base chart data section.

Filters - RTP

Filters CDR data in the same way as CDR filter formular

Common Issues

Why do SIP response codes change colors in dashboard graphs?

When viewing SIP response codes in charts or dashboard graphs, the colors are not fixed and may rotate or change over time.

• Current behavior: The dominant (most frequent) SIP response code automatically receives the 'green' color, while other codes get different colors. If 200 OK is the dominant code today, it will be green. If 404 Not Found becomes dominant tomorrow, 404 will become green and 200 OK will shift to a different color.

• Impact on monitoring: This color rotation makes it difficult to interpret trends consistently over time, as you cannot rely on a specific color always representing a specific SIP response code.

• Status: This is a known limitation. A feature request (VG-3031) has been created to make colors for response codes settable/configurable in a future release.

• Workaround: There is currently no workaround to lock colors to specific SIP response codes. You must wait for a future release where this feature will be implemented.

Why do flow diagrams and pie charts show different SIP response percentages?

Flow diagrams (time-series charts in the Charts module) and pie charts (CDR dashboard sections) may show different percentages for the same SIP response codes even when they appear to cover the same time period. This typically has two causes:

Different Time Intervals

The most common cause is that the charts are actually configured for slightly different time ranges.

• Resolution: Ensure both the pie chart (CDR Dashboard) and the flow diagram (Charts module) are configured with exactly the same time interval. Check the time filters in both views carefully - the Dashboard pie chart uses the CDR view's time range, while Charts has its own independent "Date range" settings.

Flow Diagrams Near Current Time Show Lower 200 OK

For time periods very close to the current time, flow diagrams will naturally show a lower percentage of 200 OK responses compared to pie charts, even with identical time intervals.

This occurs because of how VoIPmonitor captures and records calls:

• Calls in progress: Calls that are still active when you query the data have not yet completed their SIP signaling and cannot be classified with a final response code. They are excluded from flow diagram calculations.
• Database latency: Even after calls complete, there is a delay before they are processed, saved to the database, and become available for chart queries. This negative caching period means that very recent calls may not be included in flow diagrams yet.
• Result: The flow diagram shows the percentage of completed/categorized calls, which skews toward lower success rates for periods close to "now" because many 200 OK calls are still in progress or not yet written to the database.

• Resolution: For accurate, consistent comparisons between flow diagrams and pie charts, use a time period that is at least several minutes old (older than your typical call duration plus database write latency). Historical time periods will show consistent percentages across both chart types.

AI Summary for RAG

Summary: Charts in VoIPmonitor visualize call data over time with interactive graphs. Create charts by clicking + and configuring date range, series (data sources), and description. Available data sources include number of calls, MOS/jitter/delay/packet loss, RTCP values, ACD/ASR/PDD/SIP responses, codecs, and CallPerSec for calls per second metrics. Templates provide quick chart configurations. Filters (common and RTP) can be applied to CDR data same as CDR filter forms. Use IP groups to efficiently filter charts by specific providers: create IP groups for providers in GUI → Groups → IPs, then apply them as filters using the Group Filters section in Filters - common tab. This allows monitoring jitter, MOS, delay, and packet loss for specific destinations or comparing multiple providers on a single chart with named series. Common issue 1: SIP response codes in charts and dashboard graphs have colors that are not fixed - the dominant response code automatically gets the 'green' color and colors rotate based on which code is dominant. This is a known limitation (feature request VG-3031) and there is currently no workaround to lock colors to specific SIP response codes. Common issue 2: Flow diagrams (time-series charts) and pie charts (CDR dashboard) may show different SIP response percentages due to different time intervals or because flow diagrams near current time show lower 200 OK percentages - calls in progress are not yet categorized and there is database latency before calls are available for chart queries. For accurate comparisons, ensure both charts use exactly the same time interval and use historical periods (several minutes old) to avoid in-progress call effects.

Keywords: charts, graphs, visualization, number of calls, CallPerSec, CPS, calls per second, MOS, jitter, delay, packet loss, RTCP, ACD, ASR, PDD, codecs, templates, filters, time interval, IP groups, provider filtering, Group Filters, Called Groups, Caller Groups, filter by provider, compare providers, series naming, flow diagram, pie chart, SIP response percentage, different percentages, in-progress calls, database latency, negative cache, CDR dashboard, color rotation, automatic color, dominant response, colors change, fixed colors, color assignment, VG-3031 Key Questions:

• How to create charts in VoIPmonitor GUI?
• How to view Calls Per Second (CPS) in a graph?
• What metrics can I visualize in VoIPmonitor charts?
• How to monitor MOS, jitter, delay, and packet loss over time?
• How to use CallPerSec template for CPS visualization?
• How to create a chart for jitter towards a specific provider?
• How to use IP groups to filter charts by provider?
• How to compare multiple providers on the same chart?
• Why do SIP response code colors change in charts and dashboard?
• Why is the green color rotating between different response codes?
• How to fix colors for specific SIP response codes in graphs?
• Why do flow diagrams and pie charts show different SIP response percentages?
• Why does the flow diagram show lower 200 OK percentage than pie chart for recent time periods?