Avanquest Software Command Communications CS5500
Command Fax Switch 3 Port * Fax switch * 3 Port device (2 ports are linked) * For use with devices such as telephones, answering machines, fax machines, modems, etc. * Automatic or semi-automatic mode...
Pros: Small, yet durable. Works as advertised. Easy to program.
Cons: Smart ring is detected by the device, but is not audible.