Viking FAXJ 300 Phone/Fax Switch

The Fax Jack allows your fax or modem to conveniently share your existing voice line. NO LONGER AVAILABLE - Voice calls continue to ring to your phone, but automatic faxes will be sent directly to your fax machine. If someone sends a manual fax, the call can also be instantly transferred to the fax machine from your Touch Tone telephone.

Viking FAXJ-300 Technical Manual