bfb86586_Test___Test_Your_ISP_Bandwidth__Why_It_Matters
[What's Measured] Packet Loss [What Is It?] Occurs when data units, or packets, fail to reach their destination. [How It's Measured] Measured as a percentage of the total data packets attempted. [Why It Matters] 
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.
MegaPath Bandwidth Test | Test Your ISP Bandwidth
Why It Matters