I'm not a current or prior Xfinity customer so not up on their equipment and service.

I was visiting my Mom and her sister yesterday at Mom's apartment prior to meeting my brother and his wife for a family dinner. My Aunt asked me to help get her laptop connected to the internet. Mom signed up for Xfinity internet a few months ago. I found out she has never used it. She has a PC but hasn't used it in a good while because her arthritis makes it difficult to use the keyboard. After decrypting her confusing notes on folded papers, I tried logging in to WiFi on my phone. Success but I was connected without internet. I started digging around and found that her cable modem isn't connected to anything other than power. There's a coax cable on it but it's not connected to anything on the other end. She has Xfinity for TV service and that works fine. There's a coax cable coming out of a hole in the wall (no plate) that connects to the TV box (XiD-P). No other port/cable for the modem.

What is supposed to be provided to connect the B6?

I'm an hour and a half away from her so not readily available but have a tech savvy nephew that lives in the area that could help her talk to Xfinity so they get a clear picture of the situation. Mom is 93 Good job and not as sharp as she used to be.

Sounds like you need a splitter to attach from the wall coax, so you end up with it going to the tv and the modem. But that was the old school way, not sure if the modem has an 'out' to go to the tv, where you would just connect the wall coax to the modem.

I also assume it's a modem/router combo.

Pictures of the modem might help if you can swing it.

XB6 "Advanced Gateway" (Technicolor model CGM4140COM)



Xfinity XiD-P TV box. The cable connected to the XB6 does not fit the Cable Out BNC female on the box.

That "cable out" connector does not look like a BNC, but it also doesn't look like an F connector (are there any threads, hard to tell from the angle of the pic). You typically don't see BNC connectors on consumer video gear.

Agree with the above recommendation, just get a splitter and an extra length of RG6 and be done with it. Make sure you get one that's rated up to 2 GHz or so, for future-proofing if your area migrates to DOCSIS 4.

Like this:

https://www.amazon.com/BAMF-2-Way-Splitter-Bi-Directional-5-2300MHz/dp/B0113JAN8K

akaggie05 said:

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That "cable out" connector does not look like a BNC, but it also doesn't look like an F connector (are there any threads, hard to tell from the angle of the pic). You typically don't see BNC connectors on consumer video gear.

Agree with the above recommendation, just get a splitter and an extra length of RG6 and be done with it. Make sure you get one that's rated up to 2 GHz or so, for future-proofing if your area migrates to DOCSIS 4.

Like this:

https://www.amazon.com/BAMF-2-Way-Splitter-Bi-Directional-5-2300MHz/dp/B0113JAN8K

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You're right, it's a threaded F connector. Not sure where BNC came from other than the recesses of my memories from working with vibration monitoring eqpt back in the day.

I wasn't sure if the incoming cable used for the "TV box" would also include the internet service.

Yes, same cable.

OK, great!