Billion M500 User Manual page 82

Session Timeout: period of time after which if client hasn't been authorized itself with hotspot system,
the client login attempt proves failed, another try needed.
Idle Timeout: period of inactivity for each client. When there is no traffic from this client (literally client
computer should be switched off), once the timeout is reached, the link disconnect automatically.
Upload/Download Bandwidth: The maximum usage bandwidth to each client.
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