I have an all in one, an answering service and a desktop.
I included two photos of a device attached to my gateway from Comcast to better illustrate what I am trying to understand.
An ethernet cable runs from my all in one to my router as does my desktop. This I understand.
What puzzles me is the name of the device that is inserted to the upper left of the Gateway.
It appears it is inserted in the upper left of the telephone section then two ports come out of it. One seems to go to the wall and the other to a splitter. The splitter goes to the printer then the other side goes to the answering machine.
The answering machine answers on 4 rings and the fax or all in one on 5. It all works.
What is that device and what is its function.
I always thought it was an RJ45 and changes the ethernet to analog but know I am off base.
PS I attached two shots to give you a better idea. The gateway only says Xfinity on it.