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PING Usage and Limitations
Ping is a protocol used to verify device availability, response time, and packet loss in a network by sending ICMP (Internet Control Messaging Protocol) Echo Request frames to an end network device and listening for the Echo Reply frames from the device. In other words, if the end device receives and returns the Ping, then you have connectivity to the device.
Know the Relationship Between QoS and Voice Over Wi-Fi
Packet drops and jitter can greatly reduce the quality of a Voice Over Wi-Fi call. When troubleshooting Voice Over Wi-Fi call quality issues the following