said by dvd536:
That boosted your upstream power levels which isn't good.
two things to point out here
First, the modem adjusts it's upstream power levels based on commands from the CMTS. short of a tech coming out and redesigning the plant or putting in pads somewhere this is not something that "they" do but rather a setting that is variable and done by the modem...and it will change some over time due to changes in the physical plant due to temperature changes
Second, higher power levels are actually a good thing, especially in the upstream because it gets the signal as high above the noise as possible so that the SNR is higher.
As long as the levels aren't ever going above the DOCSIS standard of 55db then the higher the better