How long does it take to receive a Mobile Terminated (MT) Fax?

This will vary, depending on the number of pages, the content of each fax page, and also the currently set Polling Interval of the Fax adapter. For example, if you have a polling interval of 10 minutes, and someone sends a fax to your device just after it has already polled for new faxes, it will take at least 10 more minutes plus the time to dlownload the fax page(s).