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I am subscribed to Xfinity Triple Play (TV, Internet, Voice) which includes Blast! with speeds of 105Mbps.
I am getting nowhere near that speed with peak being 34 down and 12 up on a good day. Usually I'm stuck at 3Mbps down with my upload still at 12.
I've had techs come out and run new wire from the ground block, put an amp in, and upgrade the ALL my devices. When I talk to support, they recommend power cycling everything or they send a "refresh signal."
The Router / Modem / VoIP is a Cisco DPC3941T provided by Comcast.
Speeds from a direct connection are as follows;
(XFINITY Speed Test)
Test 1: 34.23Mbps Download, 12.13Mbps Upload.
Test 2: 24.22Mbps Download, 11.99Mbps Upload.
IPv6 shows slower speeds at 6.49Mbps down, 11.84Mbps up.
Signal Status (Simplified status page so it would fit):
SNR on channel 2 is usually poor at 16dB.
This is the wiring job a technician did.
Any help is appreciated.
The downstream power levels are weak. The SNR's are out of spec on some of the channels. And the upstream power is almost out of spec as well. It may indeed be fluctuating farther out of spec intermittently. You need to get them back out there until they fix it right.
Update: I have installed new coax to replace the older RG-59 with RG-6, installed 75ohm caps, and installed a new ground block outside since the current one was showing age.
Speeds are holding steady at 105+Mbps down. Downstream and upstream levels are now in the acceptable levels, and TV does not cut out as it did before.
I think I've fixed the problem, I'll post an update in a day or so.
For curiosity, what do the signal stat figures look like now ?
You should also reduce the severity of this coax bend (if you haven't already) behind the modem.
Well, the issue still exists. Downstream channel 2 has no lock and has an SNR of 5.438 dB. All the other channels are fine. What could be the issue?
There ya' go. Happy surfing !