User`s manual

FXO Features
2-wire loop start
Support auto-attendant (Tone or voice greeting)
PSTN polarity reversal detection
Provide 2
nd
dial tone to PSTN
Disconnect tone detection
Asking ping function with the incoming calls from PSTN side
Record and analyze the Tone from PSTN side
Environmental
Operation temp:0°C to 40°C
Humidity: 10% to 90% (Non-condensing)
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