940-566-1615

Call came in on a cell phone.  I called back using a landline.  When the call was answered, several tones sounded.  I suspect that the tones were to make your cell phone redial another number

Also got a call from this number, nobody there, I have had a lot of similar calls lately. The last one was 11/20/08

occurred exactly the same way, with several tones sounding when I returned the call.

This number, and a string of other 940 and 817 numbers, has called our business 800 numbers multiple times.  No fax (though, sounds like a fax tone), no one on the phone, no way to look them up or ask them to stop calling.  Filing a Junk Fax 1088 Form with the FCC, recommend you do so as well, or you can fill out a Do Not Call Complaint with the FTC if you're not a business.  The more people who report this, the louder we are, the faster we get the FCC's attention, the more likely they do something about it.

FCC:        
https://esupport.fcc.gov/form1088/consumer.do?form_page=1088A

FTC:
https://www.donotcall.gov/complaint/complaintcheck.aspx