VoIP – SIP (Voice over IP – Session Initiation Protocol) simulates the VoIP calls between two OpsRamp gateways in your network. This will help to analyze and identify the call response, quality, jitter, and calculate the Mean Opinion Score (MOS).
MOS grade
| MOS grade | QoE evaluation |
|---|---|
| 5 | Excellent |
| 4 | Good |
| 3 | Common |
| 2 | Bad |
| 1 | Very bad |
Prerequisites
- Enable SIP Agent before configuring the SIP synthetics monitor.
- Keep all SIP-enabled gateways in one client.
Configure Parameters
After selecting the synthetic monitor type to SIP, enter the follwoing details:
| Section | Field Name | Description | Values/Example | Field Type |
|---|---|---|---|---|
| SIP Configuration | Call Plan | Enter the IP address/host name of the synthetics. It should be accessible from Gateway.
| Dropdown | |
| Source Locations | Select source location from dropdown. | Dropdown | ||
| Destination Locations | Select destination location from dropdown. | Dropdown | ||
| Call Duration | Duration that verifies the call quality. Call duration cannot exceed the time configured for Call Frequency. | Dropdown | ||
| Codec Format | Codec format that determines the format of the voice packets received during the call. | Dropdown | ||
| Frequency | The time interval to monitor the chosen Gateways. | Dropdown |
After configuring, view metrics, and graphical representations for more information.
Metrics Graphical Representation
Supported Metrics
| Metric Name | Description | Units |
|---|---|---|
| availability.down.location.count | Location Count. Number of locations where the configured host is down | - |
| sip.call.latency | Latency. Time between the moment a voice packet is transmitted and the moment it reaches its destination | milliseconds |
| sip.call.pl | Packet loss. Percentage of packets dropped by the network on the way to the destination address | percent |
| sip.call.mos | Mean Opinion Score (MOS): Measure of voice quality | - |
| sip.call.jitter | Jitter. Time taken to measure the voice instability | milliseconds |
| sip.call.rtt | Round trip time. Duration for data to travel to the target destination for the speed test and back | milliseconds |