I am not reliably getting my contracted download speed of 50 mbps. Sometimes 50+, but then also 22, 10, 6, or 2 mbps. Have done all the regular repowering and refreshing modem. Cox can sometimes send a refresh to modem and modem speed will return to 50+, then later speed falls. Modem is direct connected to computer so not a wi-fi router issue. Modem is Arris SB6183, a Cox approved modem. Modem is 4 months new. Arris states that my SNR should be >33 db. Out of 16 downsteam channels, my highest is 30.6, my lowest are 0 and 26.8 db. Arris states my upstream power should be between 45-51, all four of my upstream channels are 53.5 dbmv. How can I get a better downstream SNR from Cox? and a better upstream power level?
| Downstream Bonded Channels |
| Channel |
Lock Status |
Modulation |
Channel ID |
Frequency |
Power |
SNR |
Corrected |
Uncorrectables |
| 1 |
Locked |
QAM256 |
29 |
849000000 Hz |
-10.2 dBmV |
29.3 dB |
7416 |
0 |
| 2 |
Locked |
QAM256 |
17 |
777000000 Hz |
-9.1 dBmV |
29.7 dB |
2308 |
0 |
| 3 |
Locked |
QAM256 |
18 |
783000000 Hz |
-10.4 dBmV |
28.8 dB |
37415 |
0 |
| 4 |
Locked |
QAM256 |
19 |
789000000 Hz |
-8.3 dBmV |
30.6 dB |
144 |
0 |
| 5 |
Locked |
QAM256 |
20 |
795000000 Hz |
-8.8 dBmV |
30.2 dB |
278 |
0 |
| 6 |
Locked |
QAM256 |
21 |
801000000 Hz |
-9.1 dBmV |
29.8 dB |
1569 |
0 |
| 7 |
Locked |
QAM256 |
22 |
807000000 Hz |
-9.5 dBmV |
29.6 dB |
2624 |
0 |
| 8 |
Locked |
QAM256 |
23 |
813000000 Hz |
-8.6 dBmV |
30.5 dB |
1891964 |
177 |
| 9 |
Locked |
QAM256 |
24 |
819000000 Hz |
-10.3 dBmV |
29.0 dB |
19128 |
0 |
| 10 |
Locked |
QAM256 |
25 |
825000000 Hz |
-9.2 dBmV |
29.6 dB |
531228 |
5 |
| 11 |
Locked |
QAM256 |
26 |
831000000 Hz |
-9.7 dBmV |
29.1 dB |
18728 |
0 |
| 12 |
Locked |
QAM256 |
27 |
837000000 Hz |
-9.2 dBmV |
29.7 dB |
2444531 |
495 |
| 13 |
Locked |
QAM256 |
28 |
843000000 Hz |
-13.3 dBmV |
0.0 dB |
66254 |
253819 |
| 14 |
Locked |
QAM256 |
30 |
855000000 Hz |
-12.5 dBmV |
27.2 dB |
23751032 |
1723587 |
| 15 |
Locked |
QAM256 |
31 |
861000000 Hz |
-10.8 dBmV |
28.5 dB |
193868 |
0 |
| 16 |
Locked |
QAM256 |
32 |
867000000 Hz |
-13.1 dBmV |
26.8 dB |
9117421 |
736018 |
| Upstream Bonded Channels |
| Channel |
Lock Status |
US Channel Type |
Channel ID |
Symbol Rate |
Frequency |
Power |
| 1 |
Locked |
ATDMA |
1 |
5120 Ksym/sec |
36800000 Hz |
53.5 dBmV |
| 2 |
Locked |
ATDMA |
2 |
5120 Ksym/sec |
30400000 Hz |
53.5 dBmV |
| 3 |
Locked |
ATDMA |
3 |
5120 Ksym/sec |
24000000 Hz |
53.5 dBmV |
| 4 |
Locked |
ATDMA |
4 |
5120 Ksym/sec |
17600000 Hz |
53.5 dBmV |
Also, various T2 and T3 time out events.
| Time Not Established |
Critical (3) |
No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.0;CM-VER=3.0; |
| Sun Aug 01 21:54:35 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Sun Aug 01 22:11:13 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Sun Aug 01 23:04:33 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 00:11:42 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 01:10:20 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 01:22:16 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 02:49:29 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 04:22:45 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 04:43:59 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 05:31:14 2021 |
Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
| Mon Aug 02 16:14:13 2021 |
Critical (3) |
Resetting the cable modem due to docsDevResetNow |
| Mon Aug 02 17:08:25 2021 |
Critical (3) |
Resetting the cable modem due to docsDevResetNow |
| Time Not Established |
Critical (3) |
No Ranging Response received - T3 time-out |
| Time Not Established |
Critical (3) |
No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established |
Critical (3) |
No Ranging Response received - T3 time-out |
| Time Not Established |
Critical (3) |
No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established |
Notice (6) |
Honoring MDD; IP provisioning mode = IPv4 |
| Time Not Established |
Warning (5) |
DHCP WARNING - Non-critical field invalid in response ;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.0;CM-VER=3.0; |
| Time Not Established |
Warning (5) |
ToD request sent - No Response received;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.0;CM-VER=3.0; |
| Mon Aug 02 18:17:24 2021 |
Notice (6) |
TLV-11 - unrecognized OID;CM-MAC=f8:a0:97:b7:14:3b;CMTS-MAC=b4:de:31:2b:ad:5e;CM-QOS=1.1;CM-VER=3.0; |
