Welcome to the Cox Community
Our community is a collaborative place to learn about Cox products and services. Jump into the conversation today!
Messages
Selected Messages
Our community is a collaborative place to learn about Cox products and services. Jump into the conversation today!
New Contributor III
•
16 Messages
Closed
My Cox internet connection is via a legacy Arris NIU. The coax from the street connects to the Network port and the coax feeding my cable modem connects to the Home port. There are a couple of voice ports which are disconnected since I have my own VOIP provider and a separate box for that on my LAN.
I have some noise on my network so I think removing this obsolete equipment and replacing it with a simpler junction box is probably a good idea. I think the NIU must provide some type of filtering and surge/lightning protection so I don't think you can just screw the two ends of coax together with a grounded coupler.
Does anyone know what these old boxes are replaced with when all you need is the cable connection for internet?
Discussions
•
Updated
238
3
0
0
Reset Modem Often!
Discussions
1
0
Cox/Spectrum is deceptive!
Discussions
1
0
Slow Internet
Discussions
1
0
Still no internet? 13 of 15 days with an outage?
Discussions
1
0
Reset Modem Often!
Discussions
1
0
Bill
Discussions
3
0
NBA League Pass vs NBA TV
Discussions
1
0
Cox/Spectrum is deceptive!
Discussions
1
0
WiderMouthOpen
+6 more
Esteemed Contributor III
•
Should just need a grounding block, assuming the NIU was correctly grounded. However the NIU is Cox property so just contact them to come out and remove it and do everything required. No replacement since it isn't used anymore and serves no function. If anything, it just causes problems. I am surprised it's still there. When was the last time you had a technician out?
5
0
WiderMouthOpen
+6 more
Esteemed Contributor III
•
I saw this previous post which pointed to a possible ground hum issue. Did you ever get that looked at and fixed? I know you likely have, since it was 10 years ago, but that would line up around the time Cox used NIU's, so it's possible a tech hasn't been out in that long.
2
0
Tcox
New Contributor III
•
Tired of waiting, I pulled the NIU and put in a grounding block, and put my garage back in order.
The CM numbers are within the recommended ranges across all channels with no errors so far:
Downstream +8 to -8 dBmv (meas -2.2 to -4.3dBmv)
Upstream 40 to 50 dB (meas 45 to 47dBmv)
SNR 35 to 45dB (meas 40 to 42dB)
Looks like I didn't need a service call for this.
0
0