some one with more detailed knowledge can answer better, but id post your signal levels.
keep in mind these are in reverse, so they are actually..
Critical (3) Started Unicast Maintenance Ranging - No Response received
connection lost modem will now try to reconnectCritical (3) No Ranging Response received - T3 time-out
modem tried to range on known channel, but mediacoms equipment did not reply in timeCritical (3) Unicast Ranging Received Abort Response - Re-initializing MAC
mediacoms equipment has sent an abort request, modem will now try to reconnect and reprovisionCritical (3) DCC aborted unable to communicate on new upstream channel
mediacom told modem to use a different upstream channel, but modem cant talk to mediacom on this channel, it will now abort trying on this channel and try a different channelCritical (3) No Ranging Response received - T3 time-out
connection still lost, modem modem is still trying to reconnectWarning (5) DHCP WARNING - Non-critical field invalid in response
mediacom sent some weird info with the DHCP header, its not standard thus its invalid, modem will ignoreNotice (6) TLV-11 - unrecognized OID
this one i have no idea about, but its only a notice so not connection criticlethese are my best guesses and may be completely wrong, but its what i gather is going on based on years of troubleshooting my own connection before reaching out to mediacom, otheres may have more accurate information.
edit: and chad got in before i was done typing