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Regular Contributor
l3oss_is_back
Posts: 25
Registered: ‎08-06-2011

No Ranging Response received - T3 time-out

Downstream
     Freq/Power:     771.000 MHz     7 dBmV      
     Signal to Noise Ratio:      39 dB      
     Modulation:    QAM256     
Upstream
     Freq/Power:    21.800 MHz     47 dBmV      
      Channel Type:     DOCSIS 1.x (TDMA)     
      Symbol Rate:     2560 kSym/sec     
      Modulation:     QAM16      

 Status
System Uptime:     1 days 11h:26m:45s
Computers Detected:    1
CM Status:    Telephony-AC Power Iso OFF Reg Complete
Time and Date:    SAT SEP 10 15:42:55 2011

 

8/5/2011 23:03     20000200     3     No Ranging Response received - T3 time-out

8/6/2011 7:51     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout

8/6/2011 7:51     17000100     3     SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

8/7/2011 5:43     20000200     3     No Ranging Response received - T3 time-out

8/8/2011 0:59     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout


8/15/2011 8:23     20000200     3     No Ranging Response received - T3 time-out

8/18/2011 0:35     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout

*****     20000200     3     No Ranging Response received - T3 time-out


*****     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout

8/21/2011 20:38     20000200     3     No Ranging Response received - T3 time-out

8/27/2011 0:32     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout

9/4/2011 15:28     20000200     3     No Ranging Response received - T3 time-out

9/6/2011 0:33     20000400     3     Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout

New Visitor
sidmonee911
Posts: 4
Registered: ‎09-08-2011

Re: No Ranging Response received - T3 time-out

Hi,

 

I was having similar issues to these errors you are seeing as well. 

 

Basically whenever T3 time-out would happen my internet would cut out for a brief moment.  I'm of course not an expert but along with having the tech coming out (3 times) they replace practically everything (the connectors, splitter, modem, checked all lines and even checked the connection at the poles.  

 

A fellow community member "b-slice" offered the following prior to calling into comcast that may help in this case.

 

"Start monitoring your upstream power levels.  When my issue was happening, the UPS power level were fluctuating up to 50dBmV or so... "

 

So to recap my situation:  A 2nd level tech came out and saw that the original tech actually just ran a new line into my room while still using part of the "old cable".  It turned out the "old cable" had some punctures from the carpet nails which most likely was affecting my intermittent disconnects.  It's been a full day with no issues thus far, but the true test will be during the weekdays when I'm online working from home and during my web trainings to see if this fully resolve. 

 

I'll post back on Monday night to share in case this ends up helping anyone.

 

Best of luck!

Regular Contributor
l3oss_is_back
Posts: 25
Registered: ‎08-06-2011

Re: No Ranging Response received - T3 time-out

20 mins latter

 

Downstream
     Freq/Power:     771.000 MHz     7 dBmV      
     Signal to Noise Ratio:      39 dB      
     Modulation:    QAM256     
Upstream
     Freq/Power:    25.200 MHz     47 dBmV      
      Channel Type:     DOCSIS 2.0 (ATDMA)     
      Symbol Rate:     2560 kSym/sec     
      Modulation:     QAM64      

 Status
System Uptime:     1 days 11h:45m:55s
Computers Detected:    1
CM Status:    Telephony-AC Power Iso OFF Reg Complete
Time and Date:    SAT SEP 10 16:02:05 2011


Regular Contributor
l3oss_is_back
Posts: 25
Registered: ‎08-06-2011

Re: No Ranging Response received - T3 time-out

 RF Parameters

Downstream
 Freq/Power:765.000 MHz8 dBmV 
 Signal to Noise Ratio: 40 dB 
 Modulation:QAM256 

Upstream
 Freq/Power:36.000 MHz47 dBmV 
 Channel Type:DOCSIS 1.x (TDMA) 
 Symbol Rate:2560 kSym/sec 
 Modulation:QAM16