Reddit reviews Multi-link 4 Port Fax/Modem Switch Stick
We found 1 Reddit comments about Multi-link 4 Port Fax/Modem Switch Stick. Here are the top ones, ranked by their Reddit score.
Factory-direct support & programmingQuality "ring back" toneMaintains regular phone service in a power outageBarge-In protection
It's as Mango123456 said. However, you could add a device like The Stick http://amzn.to/1RYLwZb which comes after your OBI and has a Fax port and a Phone port. It will listen for the fax tones on incoming calls and route the call to the appropriate port. If you turn the ringer off on your fax then you will not get a ring when a fax comes in.