Configure the frequencies of disconnect tone. It is used to detect the incoming disconnect tone by FXO port.

Due to the disconnect tone is usually composed by two different frequencies, you must get these frequencies from your local telecom standards. Key the frequencies by Hz in Frequency1 and Frequency2 fields.

Tone On-Off Duration Setting:

Configure the cadence of disconnect tone. It is used to detect the incoming disconnect tone duration by FXO port.

If you know each duration value, turn CP Tone Auto Learning off. And, Key the time of tone on duration in Tone-Onfield.

Key the time of tone off duration in Tone-Offfield.

If you do not know each duration value, enable CP Tone Auto Learning. And, Save FXO settings.

Reboot the system.

Make a call through FXO port. After the callee reply and disconnect, wait for 10 seconds. Enter the FXO setting user interface again. You will find the Tone On-Off fields filled by values detected.

Turn CP Tone Auto Learning off.

Loop Current Shutdown Detection:

Select “YES” if you want to detect the status of loop current in FXO port. If not, select “NO”.

FXO Gain Control:

These fields are used to decrease or increase the gains in FXO output and input channels. Default gain values are all “zero”.

When you make a call from IP to PSTN, adjust FXO Input Gain Control (To PSTN) to a lower value if PSTN cannot recognize your numbers dialed after hearing the PSTN dial tone. For example, set “-6” to replace the default “0”.

Always use “6” as a unit for your first trial and find a best suitable number then. When you make a call from PSTN to IP, adjust FXO Output Gain Control (To IP) to a lower value if IP cannot recognize your numbers dialed after hearing the dial tone. For example, set “-6” to replace the default “0”.

Click Save FXO Setting to save all settings to FXO port.

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LevelOne 4100, 2110, VOI-1110, 2100 manual Tone On-Off Duration Setting, Loop Current Shutdown Detection, FXO Gain Control
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2110, VOI-1110, 2100, 4100 specifications

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