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Automated Network Jitter Test

Continuously measure jitter, latency, and packet loss across your network paths, with alerting when values exceed your thresholds

Free download
PRODUCT OVERVIEW

What Does a Network Jitter Test Actually Measure?

Jitter is the variation in packet delay: how consistently (or inconsistently) data packets arrive over time, measured in milliseconds. A proper jitter test captures more than just jitter: it also tracks latency, round-trip time, packet loss, and depending on the sensor, MOS scores for VoIP call quality assessment. Achieving low latency and consistent packet delivery is what real-time applications depend on. PRTG measures both continuously on a configurable polling cycle, not just when someone thinks to run a manual test. That means you get a running record of network performance metrics over time, not isolated snapshots you have to piece together afterwards.  

For vendor-agnostic environments, Paessler PRTG offers the Ping Jitter sensor (ICMP), QoS (Quality of Service) One Way sensor (UDP), and QoS (Quality of Service) Round Trip sensor (UDP), compatible with any IP-reachable device from Cisco, Juniper, HP, and others. For Cisco IOS-based infrastructure specifically, the Cisco IP SLA sensor and SNMP Cisco CBQoS sensor are also available.

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What you will find on this page

  • Continuous Jitter Monitoring
  • How to Measure Network Jitter
  • Manual Jitter Testing vs. PRTG
  • FAQs

PRTG is compatible with all major vendors, products, and systems

compatible with all major vendors, products, and systems

Continuous Jitter Monitoring Across Every Network Path

See Jitter Patterns, Not Just Snapshots

Jitter problems are often intermittent. They show up during peak traffic, network congestion, or at times nobody's actively watching, and they're gone by the time someone opens a terminal to check. A one-off ping or speed test gives you a single data point in time. That's rarely enough to act on.  

PRTG runs jitter tests automatically on a configurable polling cycle and stores every reading. Trend graphs show how values behave over hours, days, or weeks. You move from "we had a complaint and ran a test" to "here's what high jitter looked like, reading by reading, over the past 30 days."

  • 24/7 automated measurement
  • Configurable polling interval per sensor
  • Historical trend graphs with timestamps
  • Threshold-based alerting via email, SMS, or push notification
  • Alert contacts configurable per threshold level

One Platform for All Your Jitter and QoS Testing

The typical manual setup (ping for basic delay, iperf for UDP throughput, Wireshark for packet inspection) gets the job done for a one-time check. But it requires setup every time, produces no alerts, and retains nothing between sessions. There's nothing to look back at.  

PRTG's dedicated jitter sensors run without manual intervention and store everything in one place. Ping Jitter (ICMP) handles lightweight, vendor-agnostic tests with response time reporting. QoS One Way and Round Trip (UDP) measure between two probe locations for directional accuracy. Cisco IP SLA taps into Cisco IOS infrastructure directly. All the test results land in one dashboard.

  • 4 sensor types covering different environments and precision needs
  • No coding or scripting required
  • Live dashboards alongside historical data
  • Exportable measurement data for reporting
PRTG Ping sensor graphs showing response time, min, max, and packet loss over time

Ping response and packet loss

PRTG web interface showing live performance graphs for a Probe Health sensor

Live graphs, real-time performance data

PRTG reports list showing scheduled monitoring reports with run times and sensor counts

Scheduled reports, always on time

See Why IT Professionals Trust PRTG

Start monitoring your infrastructure in minutes. No professional services, no complex configuration, no risk.

Free download
PRODUCT OVERVIEW

Timestamped Measurement Data for Every Provider Conversation

Timestamped measurement history gives you an objective starting point for any provider conversation about call quality or network degradation. Per-path data tells you which link the issue is on before the conversation even starts. When choppy audio hits a VoIP call, video conferencing drops, or network quality degrades, the data from that window is already there. You don't have to reconstruct what happened, and the metrics speak for themselves.

  • Timestamped readings for all sensor values
  • Exportable reports for sharing with your internet service provider, VoIP provider, or internal stakeholders
  • Latency and packet loss measured alongside jitter
  • MOS scores for VoIP quality assessment via Cisco IP SLA sensor
  • Per-path data to help distinguish whether issues are internal or on the provider's side
PRTG tickets list showing system notifications, report completions, and update alerts

Tickets keep your team aligned

PRTG web interface showing device tree and full device list with sensor status badges

Full device list, instant overview

PRTG web interface showing Probe Health sensor with health and storage gauge widgets

Probe health at a glance

Know Which Path Has the Problem

A network-wide view tells you something's wrong, but it often doesn't tell you where. When one office, one WAN link, or one wi-fi segment has elevated jitter, a global health status isn't enough. You need per-path visibility to optimize your troubleshooting and avoid changes that don't fix anything.  

Deploy a remote probe at the branch or remote site, and PRTG's QoS sensors measure that specific internet connection directly, whether over ethernet cable, VPN, or wireless infrastructure. This is a one-time setup step. Once the probe is in place, measurement runs continuously. Cisco IP SLA handles the same for Cisco IOS-based branch infrastructure. You narrow the problem to a specific link before touching anything else, saving time and avoiding blind infrastructure changes.

  • Remote probes for per-path and per-site measurement
  • QoS One Way and Round Trip sensors for directional and bidirectional testing
  • Works over VPN-connected networks
  • Geo-map visualization of probe locations
  • Cisco IP SLA for Cisco-based branch infrastructure

How PRTG Measures Network Jitter

PRTG uses different measurement methods depending on your environment and the level of detail you need. Here's what each approach covers technically: the protocol, what's measured, and what output you get.

ICMP Jitter Measurement

The Ping Jitter sensor sends a series of ICMP echo requests to a target URI and measures the statistical variation in reply timing. It reports response time and a statistical jitter value in milliseconds. This is a light-weight method: no special hardware, no remote probe, no vendor dependency. Works with any device from any vendor.

UDP Probe Measurement

The QoS (Quality of Service) One Way and QoS (Quality of Service) Round Trip sensors send UDP packets between two PRTG probe locations. One Way measures jitter and packet delay variation in a single direction. Round Trip adds round-trip time to the picture. Both sensors work with any vendor's hardware, but require a remote probe placed at each end of the path you want to test.

Cisco IP SLA

The Cisco IP SLA sensor uses the IP SLA functionality built into Cisco IOS devices. The Cisco device itself generates and measures the test traffic. PRTG reads the results via SNMP. Confirmed metrics: Average Jitter, Average RTT, ICPIF, MOS (calculated by the Cisco device), Packets Lost, Packets Out of Sequence, Packets Late. Cisco IOS hardware required.

CBQoS Policy Verification

The SNMP Cisco CBQoS sensor doesn't measure jitter directly — that's not what it's for. It monitors how Cisco's Class-Based QoS policies are being enforced: pre- and post-policy packet counts, drop packets, queue depth, and drop sizes per traffic class, read via SNMP.  

Where it fits alongside jitter monitoring: if jitter is elevated despite quality of service policies being configured, CBQoS data shows whether the traffic prioritization is actually being applied as intended.  

Requires Cisco devices with CBQoS support and MQC configured. Refer to Cisco documentation for specific IOS version requirements.

free downLoad

Manual Jitter Testing vs. Continuous Jitter Monitoring with PRTG

Capability

Manual spot-checking (ping / iperf / Wireshark)

Manual spot-checking (ping / iperf / Wireshark)

Continuous monitoring with PRTG

Continuous monitoring with PRTG

Ongoing jitter measurement

Manual spot-checking (ping / iperf / Wireshark)
not included

Runs only when triggered

Continuous monitoring with PRTG
included

24/7, configurable polling interval

Historical trend data

Manual spot-checking (ping / iperf / Wireshark)
not included

No retention between sessions 

Continuous monitoring with PRTG
included

Full history, exportable 

Alerting on threshold breaches

Manual spot-checking (ping / iperf / Wireshark)
not included

Manual check required

Continuous monitoring with PRTG
included

Email, SMS, push notifications

Per-path measurement

Manual spot-checking (ping / iperf / Wireshark)
not included

Manual probe setup each time

Continuous monitoring with PRTG
included

Persistent remote probe per location

MOS score for VoIP quality

Manual spot-checking (ping / iperf / Wireshark)
not included

Not available in ping/iperf

Continuous monitoring with PRTG
included

Via Cisco IP SLA sensor (Cisco devices)

Unified dashboard across paths

Manual spot-checking (ping / iperf / Wireshark)
not included

Separate output per tool

Continuous monitoring with PRTG
included

All paths in one view

free downLoad

“PRTG helps us to keep control of our IT by making issues visible immediately – and everywhere. We always have an eye on the performance and availability of our IT and can react in time if any failures occur. On a long-term perspective, the monitoring data helps us with capacity planning so that we can deliver the required resources for our own systems as well as for our customers, without wasting money on unwarranted redundancies.”

Stein Erik Høybakk, Senior Network Engineer
TAFJORD

“All our production and business processes depend on SAP. But, of course, IT and production systems also play a crucial role in securing these processes. By incorporating SAP, production, and IT into one centralized monitoring system, we can quickly detect critical drops in performance and identify the causes of these issues. In fact, thanks to PRTG and itesys, this couldn’t be any easier.”

Andreas Schmidt, Senior Systems Engineer
Truma

“Any downtime could be detrimental to our customers. We also strive to provide the best possible service to our customers. PRTG allows us to see the health and performance of the network. Using these measurements we can make decisions on how to repair a piece of equipment before it fails and causes a service interruption.”

James Ott Jr., Communications System Technician and IT Administrator
Federal Radio

Paessler PRTG Network Monitor licenses & pricing

Choose the PRTG Network Monitor subscription that's best for you.

License NameLicense descriptionPriceLicense DetailsGet startedPricing Details
PRTG 500$200per month paid annuallyBuy nowBuy now

Enough to monitor multiple aspects of 50 devices

PRTG 1000$358per month paid annuallyBuy nowBuy now

Enough to monitor multiple aspects of 100 devices

PRTG 2500$742per month paid annuallyBuy nowBuy now

Enough to monitor multiple aspects of 250 devices

PRTG 5000$1,300per month paid annuallyBuy nowBuy now

Enough to monitor multiple aspects of 500 devices

PRTG 10000$1,642per month paid annuallyBuy nowBuy now

Enough to monitor multiple aspects of 1000 devices

Over 100,000 Customers Worldwide Love Paessler  

customer success stories

Network Jitter Test: Frequently Asked Questions

 

What is network jitter and why does it affect VoIP and video calls?

Jitter is the variation in how long it takes packets to travel from one point to another, measured in milliseconds. In applications like VoIP calls or video conferencing, packets need to arrive in a consistent, steady stream. When they don't, the result is choppy audio, dropped words, or video that freezes and catches up. Unlike file transfers or web browsing, real-time communication has no tolerance for irregular delivery.

What's an acceptable jitter level for real-time applications?

A commonly referenced threshold for VoIP calls and video calls is below 30ms. Above that, quality tends to degrade noticeably. What counts as acceptable depends on your environment and the applications in use. PRTG lets you define your own thresholds per sensor and alerts when values exceed them. It doesn't prescribe what your limit should be.

How is a continuous jitter monitoring tool different from a one-off speed test?

An internet speed test gives you a snapshot: download speed, upload speed, and latency at a single point in time. A continuous jitter monitoring tool like PRTG runs measurements on a recurring schedule, stores every reading, and alerts you when something exceeds your thresholds. The difference is visibility over time vs. a number that's already stale by the time you see it.

Does jitter monitoring require Cisco hardware?

No. The Ping Jitter (ICMP) and QoS One Way/Round Trip (UDP) sensors work with any IP-reachable device: routers, switches, or endpoints from any vendor, connected via ethernet cable or wi-fi. The Cisco IP SLA and SNMP Cisco CBQoS sensors require Cisco IOS-based hardware. They rely on Cisco-specific IOS functionality (IP SLA operations and CBQoS MIBs) that isn't available on non-Cisco devices.

How does jitter relate to latency, packet loss, and bandwidth?

They measure different things. Latency (or network latency, average latency) is how long a single packet takes to reach its destination. Jitter is how much that delay varies from packet to packet. Packet loss is how many packets don't arrive at all. Bandwidth (measured in Mbps) is how much data the connection can carry. High latency, high jitter, and packet loss all degrade real-time application quality, but in different ways. Bandwidth alone doesn't tell the full story: a high-bandwidth connection with high jitter will still produce poor VoIP call quality.

Can a jitter test help determine whether the problem is on my network or my ISP's side?

Per-path measurement helps narrow it down. If PRTG's QoS sensors show elevated jitter on the path between your internal probe and an external endpoint, and the same pattern appears in timestamped history, you have objective data to bring to the conversation with your internet service provider. It won't automatically root-cause the issue, but it gives you a starting point grounded in measurement rather than assumption.

Does jitter affect anything besides VoIP and video conferencing?

Yes. Online gaming is particularly sensitive to jitter — inconsistent packet delivery translates directly to lag and poor responsiveness. Video streaming can also be affected: buffering behavior is partly a response to irregular data delivery. Any real-time application that relies on a steady data flow can be impacted by high jitter, not just VoIP calls.

Paessler PRTG

Paessler PRTG

Network Monitoring Software – Version 26.1.116.1532 (February 9th, 2026)

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PRODUCT OVERVIEW

Products

  • Paessler PRTG
    Paessler PRTGMonitor your whole IT infrastructure
    • PRTG Network Monitor
    • PRTG Enterprise Monitor
    • PRTG Hosted Monitor
    • PRTG UVexplorer
    • PRTG extensions
      Extensions for Paessler PRTGExtend your monitoring to a new level
  • Icon Features
    FeaturesExplore all monitoring features

Monitoring with PRTG

  • Network monitoring
  • Bandwidth monitoring
  • SNMP monitoring
  • Network mapping
  • Wi-Fi monitoring
  • Server monitoring
  • Network traffic analyzer
  • NetFlow monitoring
  • Syslog server

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Contact

Paessler GmbH
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90411 Nuremberg 
Germany

[email protected]

+49 911 93775-0

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