Random disconnected.

Changed modem and router. Had 2 different techs come check my line. I get alot of error in the modem logs.

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-

Tons of these 

DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-

Dynamic Range Window violation

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-

This has been going on for 4 weeks and seems no one can fix it.