Question about RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

2 Answers

No Ranging Response received - T3 time-out

Regards.. something wrong at last few day.. my THG520 cable modem disconect 4-5times/h. the event log says:

Date/Time Event ID Event Level Description 03/13/2008 23.34 68000300 03 DHCP WARNING - Non-critical field invalid in response. 03/13/2008 23.34 82000200 03 No Ranging Response received - T3 time-out 03/13/2008 23.34 82000400 03 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout 03/13/2008 23.33 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 23.16 73000200 03 REG RSP not received 03/13/2008 23.16 68000300 03 DHCP WARNING - Non-critical field invalid in response. 03/13/2008 23.16 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 23.16 82000200 03 No Ranging Response received - T3 time-out 03/13/2008 23.15 82000400 03 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout 03/13/2008 23.15 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 23.08 68000300 03 DHCP WARNING - Non-critical field invalid in response. 03/13/2008 23.08 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 23.08 82000200 03 No Ranging Response received - T3 time-out 03/13/2008 23.07 82000400 03 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout 03/13/2008 23.07 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 23.06 82000200 03 No Ranging Response received - T3 time-out 03/13/2008 23.06 82000400 03 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout 03/13/2008 23.06 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 03/13/2008 22.30 68000300 03 DHCP WARNING - Non-critical field invalid in response. 01/01/1970 00.01 68000300 03 DHCP WARNING - Non-critical field invalid in response. 01/01/1970 00.01 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 01/01/1970 00.01 68000300 03 DHCP WARNING - Non-critical field invalid in response. 01/01/1970 00.01 68000300 03 DHCP WARNING - Non-critical field invalid in response. 01/01/1970 00.01 82000500 03 Started Unicast Maintenance Ranging - No Response received - T3 time-out 01/01/1970 00.01 82000200 03 No Ranging Response received - T3 time-out 01/01/1970 00.01 82000200 03 No Ranging Response received - T3 time-out 01/01/1970 00.01 82000300 03 Init RANGING Critical Ranging Request Retries exhausted 01/01/1970 00.01 82000200 03 No Ranging Response received - T3 time-out 01/01/1970 00.01 82000200 03 No Ranging Response received - T3 time-out 01/01/1970 00.00 68000300 03 DHCP WARNING - Non-critical field invalid in response. 01/01/1970 00.00 82000200 03 No Ranging Response received - T3 time-out 01/01/1970 00.00 82000200 03 No Ranging Response received - T3 time-out

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  • crocco Nov 29, 2008

    I have the same issue, tried 2 modems , keeps saying in the LOG Started Unicast Maintenance Ranging - No Response received - T3 time-out my downstream and upstream are great SNR is good even the Charter Tech's are unable to fix, they seem to think it's a Mainline issue,, if anybody has any answers please help

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Below 55dBmv TX is a lot better. Could be a bad service line. Also if you call the cable company and have them come out again. Have them put their DSAM meters on the house lines as well as the service tap and have them check for upstream ingress. a lot of things can cause this. It could be a loose fitting somewhere in the house. A t.v.'s shielding may be going out causing unwanted frequencies bleeding in and creating all kinds of noise on the upstream spectrum going back to the node. It could even be a neighbor causing this with their own equipment. If that's the case their maintenance techs should be able to find that.

Posted on Mar 11, 2009

Bad upstream transmit path call your cable company, what are the stats off of the diagnostics page. upstream transmit should be below 58 when connected.

Posted on May 02, 2008

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