The SPA 3102 from LinkSys supports 1 PSTN line and an analog device. Our calls will come in via a single PSTN line with one phone number. I would like to detect from the incoming call that it is a fax or voice call and handle it accordingly. Is this possible with 3CX? The faxes will be recieved by the 3CX server as PDF, but for sending we want to be able to use both 3CX (digital) and our analog fax device. I do not want to receive faxes with the analog fax. Is this possible? Do I need a seperate SPA 3102 or SPA2102 for this fax? Or can I connect it to the analog port of the SPA3102 that also handles the conversion from PSTN to VOIP?