said by ikyuaoki:
Just ask the Cox tech to boost the upsteam power channel to make the T3 timeout error away if that works.
the techs won't be able to "boost upstream power channel" (sic)...upstream power is negotiated between the CMTS and CM. The CM adjusts it's return power based on how well the CMTS can "hear it"...it isn't a modifiable setting.
the techs can tweak what return power the CM establishes using pads but this would generally be used to adjust for too high a forward level and really should be adjusted long term by adjusting either the line amp or changing the tap value.
That said, adjusting levels won't likely do much for correcting incrementing T3s. If the modem is regularly logging T3s could e an indicator of a return path noise problem and that is something a tech would going to have to come out and trace down.
For the original poster, T3 errors are pretty common and in and of themselves don't necessarily indicate a service problem but can be used to correlate the cause of some service issues.
Other than noticing T3s in the modem logs, are there any other issues with your service?