AFX-160 Fax Switch (430-1241) Troubleshooting Faxback Doc. # 17315 Q: The AFX-160 when hooked up to a TAD-265 (430-0730) or TAD-276 (430-0762) always switches to Fax instead of the telephone. A: If either of these answering machines (TAD-265 or TAD-276) is slightly off spec, they might generate an 1100 Hz tone to tell you to leave a message. This can eventually activate the fax line on the fax switch.