Voice Delay

It always caused by the network delay. You can test the delay by using a PC which connects to Internet and in the same subnet of your RJ45 phone. Refer to General Question 1 for detailed testing instruction.

Voice jitter

It always caused by the network jitter. You can test the jitter by using a PC which connects to Internet and in the same subnet of your RJ45 phone. Refer to General Question 1 for detailed testing instruction.

Voice loss

It always caused by the package loss of the network. You can test the package loss percentage by using a PC which connects to Internet and in the same subnet of your RJ45 phone. Refer to General Question 1 for detailed testing instruction.

To protect the voice quality, require the network:
Delay: less than 400ms
Jitter: less than 100ms
Package loss percentage: less than 10%
Bandwidth: more than 30Kbps