Wow, I am having the same issues. Send tech out. Always blames my modem. My modem is a Motorola MB8600 that I bought 6 months ago when they blamed my other modem. Checked my modem logs after the tech left. I see this over and over. Seems to be a connection issue from the headend master facility.
Can anyone recommend an alternative to Cox? I'm tired of giving them money and them telling me it's my modem.
| Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out |
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
No Ranging Response received - T3 time-out
| Dynamic Range Window violation |
T4 Timeout - Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received
DOCSIS event error message R04.0, Ranging Request
Cable modem did not receive a station maintenance opportunity in which to transmit a Ranging Request (RNG-REQ) message within the T4 timeout period (30 to 35 seconds). The cable modem is resetting and restarting the registration process.
Typically, this indicates an occasional, temporary loss of service, but if problem persists, check for possible service outages or maintenance activity on this particular headend system.
headend is a general term that refers to the point at which all cable television programming is collected and formatted for placement on the cable system.
The headend master facility is typically a secure building (or PLC substation) housing several large satellite dishes for reception of cable/satellite TV networks, antennae, and/or fiber optics, as well as electronic equipment used to receive, process and re-transmit video and data over the local cable infrastructure.
