Easy to setup, and very reliable, didn't have any issue since the moment I plugged it in. Highly recommended.

I originally purchased to provide phone access to my satellite receiver. I was able to get the right lights between base and other unit initially but when I tried to use the phone access from the satellite receiver, the lights turned red. I eventually gave up. Later I tried to use the system for a fax machine but could never maintain a signal. I tried different combinations of outlet locations including outlets on the same wall and was never able to make it work. The manual is not very helpful for troubleshooting either. Based on other reviews, I'm not hopeful that a call to customer service is likely to resolve the problem.

Took minutes to install, and works great. I have my fax machine and phone attached.

We were already successfully using one Instajack set to hook up the DVR on our satellite TV system to the phone line on the other side of our living room. Later we wanted to add an additional telephone jack in a bedroom on the other side of our home. I purchased the second receiver and installed it in the room. This room, while on the same floor, is separated by about 50 feet and down a hall (with several walls) from the original transmitter. As far as the installation, I followed the instructions and had both receivers programed to the one transmitter in no time. Now both the DishDVR, and the telephone in the bedroom, dial and receive calls flawlessly.
For those Instajack users who are having problems dialing out with their satellite receivers, and also have DSL internet; we also initially had some trouble dialing out, but we realized that we had failed to put a DSL filter on the Instajack receiver. Since we've corrected that, we haven't had any further trouble.

I'm sure this is a great product if it works in your house. But it won't necessarily do that. I wanted to use it with my sattelit reciever, but I was having problems, so I tried a regular phone and still not working, moved it closer, still nothing until I was lierally right next to the base unit and I still couldn't get anything. So I call up the help line and I'll admit they were very nice and helpfull. However the customer service rep did expain that it was probably the wireing in my house! How often does that happen? I asked. Well a fair bit, I was told. So if you do buy this keep the packaging :)