D-Link DVX-2002F User Manual page 52

These options are used to teach the DVX IPPBX system how to detect caller identity(caller ID)
from the PSTN lines on FXO ports.
Caller ID Detection: Enable/Disable Caller ID Detection.
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Caller Name:In some countries/regions caller name can be passed through the PSTN lines,
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by enabling this option the caller name will be received by the IPPBX system along with the
caller ID.
Caller ID Signaling: The signaling type applied on the PSTN lines to pass caller ID.
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Bell-US—Also known as BellcoreFSK. Used in the Canada, China, Hong Kong and US.
DTMF—Dual Tone Multi-Frequency. Used in Denmark, Finland and Sweden.
V23—Mostly used in UK.
V23-Japan—Mostly used in Japan.
Caller ID Start: Defines whenthe caller ID starts.
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Ring—Caller ID starts when a ring is received.
Polarity—Caller ID starts when polarity reversal starts.
Polarity(India)—Can be used in India.
Before Ring—Caller ID starts before a ring received.
CID Buffer Length: The buffer length can be used to store caller ID info.
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Ring Debounce:Sets the minimum time in milliseconds to debounce extraneous ring events.
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DTMF Hits Begin:Sampling matching value of DTMF caller ID digits, you can choose 1 to 5
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digits been matched then to consider it as part of the Caller ID.
DTMF Miss End:Sample matching value of DTMF caller ID digits, you can choose 1 to 5 digits
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been mismatched then to consider it's not part of the caller ID.
Detect Caller ID After:Sets the IPPBX to detect Caller ID after how many rings been detected.
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DVX IPPBX