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Forum Discussion
CM1200 Modem Dropping Connection
Just recently installed the Netgear CM1200 modem to support the 1G Internet service I upgraded to from my ISP "RCN" here in Pennsylvania. I also have an RAX70 Netgear Nighthawk (also new) attached an...
Well I've tried twice to add the Cable Connection snippet and twice my post disappears. Any other way to add this?
Click on "choose file" when adding. You'll only be able to add one at a time.
Lets try this. See attached pdf.
NOt all your down channels are locked in. For a 1G service you should be getting all 31 or 32 channels lock in. Something to check with the ISP about.
Heres mine:
Startup Procedure Procedure Status Comment Acquire Downstream Channel 837000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ IP Provisioning Mode Honor MDD honorMdd(4) Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 31 837000000 Hz -2.5 dBmV 37 dB 0 0 2 Locked QAM256 2 657000000 Hz -2.4 dBmV 36.5 dB 0 0 3 Locked QAM256 3 663000000 Hz -2.2 dBmV 36.6 dB 0 0 4 Locked QAM256 4 669000000 Hz -2.1 dBmV 36.6 dB 0 0 5 Locked QAM256 5 675000000 Hz -2 dBmV 36.6 dB 0 0 6 Locked QAM256 6 681000000 Hz -1.8 dBmV 36.8 dB 0 0 7 Locked QAM256 7 687000000 Hz -1.7 dBmV 36.8 dB 0 0 8 Locked QAM256 8 693000000 Hz -1.5 dBmV 36.8 dB 0 0 9 Locked QAM256 9 699000000 Hz -1.3 dBmV 37 dB 0 0 10 Locked QAM256 10 705000000 Hz -1.3 dBmV 36.8 dB 0 0 11 Locked QAM256 11 711000000 Hz -1.2 dBmV 36.9 dB 0 0 12 Locked QAM256 12 717000000 Hz -0.7 dBmV 37.1 dB 0 0 13 Locked QAM256 13 723000000 Hz -0.8 dBmV 36.9 dB 0 0 14 Locked QAM256 14 729000000 Hz -0.7 dBmV 36.9 dB 0 0 15 Locked QAM256 15 735000000 Hz -0.5 dBmV 37 dB 0 0 16 Locked QAM256 16 741000000 Hz -0.5 dBmV 37.1 dB 0 0 17 Locked QAM256 17 753000000 Hz -0.6 dBmV 37.1 dB 0 0 18 Locked QAM256 18 759000000 Hz -0.8 dBmV 37.1 dB 0 0 19 Locked QAM256 19 765000000 Hz -1.2 dBmV 37.1 dB 0 0 20 Locked QAM256 20 771000000 Hz -1.2 dBmV 37.2 dB 0 0 21 Locked QAM256 21 777000000 Hz -1.4 dBmV 37.3 dB 0 0 22 Locked QAM256 22 783000000 Hz -1.6 dBmV 37.3 dB 0 0 23 Locked QAM256 23 789000000 Hz -1.7 dBmV 37.3 dB 0 0 24 Locked QAM256 24 795000000 Hz -1.8 dBmV 37.3 dB 0 0 25 Locked QAM256 25 801000000 Hz -2 dBmV 37.1 dB 0 0 26 Locked QAM256 26 807000000 Hz -2 dBmV 37.2 dB 0 0 27 Locked QAM256 27 813000000 Hz -2.1 dBmV 37.2 dB 0 0 28 Locked QAM256 28 819000000 Hz -2.5 dBmV 37 dB 0 0 29 Locked QAM256 29 825000000 Hz -2.3 dBmV 37.2 dB 0 0 30 Locked QAM256 30 831000000 Hz -2.4 dBmV 37 dB 0 0 31 Locked QAM256 32 843000000 Hz -2.5 dBmV 37 dB 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 1 5120 Ksym/sec 36000000 Hz 39 dBmV 2 Locked ATDMA 2 5120 Ksym/sec 29000000 Hz 37.8 dBmV 3 Locked ATDMA 5 5120 Ksym/sec 22000000 Hz 38.3 dBmV 4 Locked ATDMA 6 2560 Ksym/sec 16000000 Hz 37 dBmV 5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock
StatusModulation /
Profile IDChannel
IDFrequency Power SNR /
MERActive Subcarrier
Number RangeUnerrored
CodewordsCorrectable
CodewordsUncorrectable
Codewords1 Locked 0 ,1 ,2 33 547000000 Hz -4.0 dBmV 36.6 dB 1108 ~ 2987 713286238 549483486 9 2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV - My ISP RCN tech told me tonight in the 2-3 years he’s handled troubleshooting 1G service he’s only ever seen 16-channels locked. He thinks it’s an issue with the equipment itself. He saw no drop issues overnight when I lost service so he thinks possible bad modem.
