SharkRF openSPOT3, Руководство пользователя

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The RSSI graph shows receive signal strength from the modem. The BER graph shows received Bit Error Ratio
during a call. BER is calculated also for packets received from the network, not just from the modem. The
dejitter queue graph (only shown if Advanced mode is enabled) shows the number of packets waiting in the
dejitter queue.
About the dejitter queue
All packets received from the network will first go to this queue to eliminate network jitter .
If the dejitter queue length is too short , the graph's line can touch zero during a call and the audio can stop for
a moment as the modem runs out of frames to transmit.
If the queue's length is too long , the delay can be uncomfortably high.
You can use this graph to set a proper dejitter queue length. There should be at least a few packets in the
dejitter queue when receiving a call from the network. You can set the dejitter queue length on the
Network
page (the setting only shows up if Advanced mode is enabled). As a general rule , if you have a good network
connection to the selected connector's server, set dejitter queue length to 500ms, and if you have a 3G/4G
internet connection or voice stutters a lot, try setting the length to at least 1000ms.
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