Download Speed
Mbps
Upload Speed
Mbps
Packet Loss
%
Latency
ms
Jitter
ms

| DATE | LOCATION | DOWNLOAD | UPLOAD | PACKET LOSS | LATENCY | JITTER | MOS | IP ADDRESS | |
Factors That Affect Results >>
This application tests broadband speed and quality and is not intended to troubleshoot phone call quality issues. It may be used for network validation to determine if changes should be made prior to adding services, such as VoIP, over your network connection.
| What's Measured | What Is It? | How It's Measured | Why It Matters |
|---|---|---|---|
MOS |
A numerical score of the perceived quality of a voice call. | Calculated using the results of the packet loss, latency and jitter tests on a scale from 1 (worst) to 5 (best). | Used to predict the quality of voice calls over your current network. A score of 4.4 is the perceived maximum for a VoIP call with a 4.0 considered good. |
Download Speed |
The capacity of information that can be received by your computer from the Internet. | Measured in Mbps (Megabits per second) To convert to kbps (kilobits per second), multiply by 1000. |
You should have enough downstream capacity to accommodate office needs. VoIP calls, video streaming, web browser, and email transfers all require downstream throughput. |
Upload Speed |
The capacity of information that can be sent by your computer to the Internet. | Measured in Mbps (Megabits per second) To convert to kbps (kilobits per second), multiply by 1000. |
Critical for VoIP calls, sending large files, and hosting websites. Most residential and cable services are asymmetric with lower upload transfer rates than download. |
Packet Loss |
Occurs when data units, or packets, fail to reach their destination. | Measured as a percentage of the total data packets attempted. | Packet loss can severely impact voice call quality by making calls sound choppy. In data usage, buffering and delays will be noticed as packets need to be resent. |
Latency |
The time it takes for a packet of data to make a round trip between two designated points. | Measured in ms (milliseconds) as the average time of total data packets attempted. | High latency will be noticed on voice calls through delays in conversation and periods of silence. In addition, web pages may load more slowly. |
Jitter |
The variation over time of the latency across a network. | Measured in ms (milliseconds) as the average variation of time of total data packets attempted. | High jitter values may cause voice packets to be delivered out of order, which can result in echo or talk-over effects. |
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