Random Disconnects and Disruptions. Are these levels ok?

I continue to get these types of errors on my Motorola MB8600:

16 consecutive T3 timeouts while trying to range on upstream channel 2

Unicast Ranging Received Abort Response - Re-initializing

This collection of errors results in the modem resetting and disruption in internet service. This happens multiple times per day. My modem readings are below. It seems like upstream channel 2 is out of spec. Upstream rate doesn't seem right at all and the power is supposed to be 35 at a minimum, according to Motorola. 

The Cox line comes from a green box in my yard and is directly connected to the line that goes to the modem in my house. There are no splitters or other devices/services in the mix, all rooms with a coax hookup are single runs to the interface box on the side of my house. 

This modem was only up for a few hours (after it's last auto-reset) and I have this many errors, including uncorrectables. I've asked support if there is an issue or if someone can come out and look and they told me everything was fine. 

Any thoughts on this? The forum is full of similar issues and some folks have better luck than others getting resolution through proper channels. Any help is appreciated. 

Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
1 Locked QAM256 41 405.0 4.0 40.7 261 0
2 Locked QAM256 1 783.0 5.5 40.6 273 0
3 Locked QAM256 2 789.0 5.2 40.4 253 0
4 Locked QAM256 3 795.0 5.0 40.6 285 0
5 Locked QAM256 4 801.0 5.2 40.5 308 0
6 Locked QAM256 9 831.0 3.1 39.5 313 0
7 Locked QAM256 10 837.0 3.1 39.4 305 0
8 Locked QAM256 11 843.0 3.1 39.3 302 0
9 Locked QAM256 12 849.0 3.0 39.1 286 0
10 Locked QAM256 17 879.0 2.6 38.9 315 0
11 Locked QAM256 18 885.0 2.4 38.8 282 19
12 Locked QAM256 19 891.0 2.4 38.7 356 0
13 Locked QAM256 20 897.0 2.6 38.8 311 0
14 Locked QAM256 21 903.0 2.6 38.7 315 0
15 Locked QAM256 22 909.0 2.6 38.8 308 0
16 Locked QAM256 25 927.0 2.9 38.9 329 0
17 Locked QAM256 26 933.0 3.2 39.1 324 0
18 Locked QAM256 27 939.0 3.0 38.9 324 0
19 Locked QAM256 28 945.0 3.3 39.0 303 0
20 Locked QAM256 29 951.0 3.9 39.3 289 0
21 Locked QAM256 30 957.0 3.8 39.3 302 0
22 Locked QAM256 33 357.0 2.8 40.4 341 0
23 Locked QAM256 34 363.0 2.7 40.3 304 0
24 Locked QAM256 35 369.0 2.8 40.2 328 0
25 Locked QAM256 36 375.0 2.8 40.3 315 0
26 Locked QAM256 37 381.0 3.0 40.4 282 0
27 Locked QAM256 38 387.0 3.1 40.4 307 0
28 Locked QAM256 42 411.0 3.9 40.8 259 0
29 Locked QAM256 43 417.0 3.4 40.6 301 0
30 Locked QAM256 44 423.0 3.2 40.6 314 0
31 Locked QAM256 45 429.0 3.0 40.3 288 0
32 Locked QAM256 46 435.0 2.9 40.4 291 0
33 Locked OFDM PLC 159 300.0 0.0 41.5 0 0



   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
1 Locked SC-QAM 3 5120 29.8 36.5
2 Locked SC-QAM 1 2560 18.4 34.3
3 Locked SC-QAM 2 5120 23.3 35.3
4 Locked SC-QAM 4 5120 36.3 36.3
  • Hi Stanfield. You technically only need one upstream channel as our max upstream is 38 mbps. Also, our minimum upstream signal is 31, which is a little less than Motorola's. If you wish to troubleshoot, please email us at cox.help@cox.com with your complete address and name on the account and we will be glad to assist you. Thanks, Lisa - Cox Support Forums Moderator
  • Do you notice if your upstream power levels, specially channel 2, changes when you get the T3 errors? It might help to try a 3dB pad on the upstream. Not sure if this is the exact one you want, but something like this.