Hello Avrom,

The FaxFinder does not support the use of traditional Caller ID (FSK signal in-between 1st and second ring on analog line).

The analog line (usually an extension port on a PBX) needs to provide/transmit a string of DTMF digits to the FaxFinder port, right after the FF port goes off hook to answer the ring.

The string of DTMF digits is usually the last X number of digits dialed by the originating/calling side fax machine (AKA the DID digits).

After we receive the DID digits from the PBX, we proceed to answer as a fax machine and negotiate the fax. After we have completed the fax session/call – we then look to match the string of DID digits with an email address in our Fax Recipient routing table (so we know who to email the received fax to).

Sincerely

Jeff Blees

Engineering Technician