User guide

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Step 4: Select FXS gateway’s Caller ID Mode. See Figure 22 and 23.
FXS Gateway Caller ID generation is able to configure which Caller ID mode in
order to match analog phone set’s Caller ID specification. Go to FXS Setting

Caller ID

Caller ID Mode to select one of Caller ID Mode ( DT M F, FSK
Bellcore, FSK ETSI, See Figure 23 ). There are other options you may need to
pay attention at Polarity Reverse Before Caller ID, Dual Tone Before Caller ID,
Caller ID Present, DTMF Caller ID start and stop digit. See Figure 22.
Figure 21. Caller ID feature enable.
Figure 22. Select Caller ID Mode.