Community Forum

do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconnects

Frequent Visitor

do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconnects

Index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Lock Status
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Frequency
651.00 MHz
531.00 MHz
537.00 MHz
543.00 MHz
549.00 MHz
555.00 MHz
561.00 MHz
567.00 MHz
573.00 MHz
579.00 MHz
585.00 MHz
591.00 MHz
597.00 MHz
603.00 MHz
609.00 MHz
615.00 MHz
621.00 MHz
627.00 MHz
633.00 MHz
639.00 MHz
645.00 MHz
657.00 MHz
663.00 MHz
669.00 MHz
 
 
 
 
 
 
 
 
SNR
37.36 dB
38.61 dB
38.61 dB
38.61 dB
37.64 dB
38.98 dB
38.61 dB
38.61 dB
37.64 dB
37.64 dB
37.64 dB
37.64 dB
37.36 dB
37.36 dB
37.64 dB
37.64 dB
38.61 dB
37.64 dB
37.36 dB
37.64 dB
37.36 dB
37.36 dB
37.36 dB
37.36 dB
 
 
 
 
 
 
 
 
Power Level
2.50 dBmV
5.40 dBmV
5.40 dBmV
5.40 dBmV
5.60 dBmV
5.40 dBmV
5.30 dBmV
5.20 dBmV
4.70 dBmV
4.40 dBmV
3.90 dBmV
3.30 dBmV
3.30 dBmV
4.20 dBmV
5.10 dBmV
5.60 dBmV
5.60 dBmV
5.50 dBmV
4.90 dBmV
4.00 dBmV
3.00 dBmV
2.40 dBmV
2.90 dBmV
3.30 dBmV
 
 
 
 
 
 
 
 
Modulation
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
Upstream
Channel Bonding Value
Index
1
2
3
4
5
6
7
8
Lock Status
Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Not Locked
Frequency
35.80 MHz
23.00 MHz
29.40 MHz
 
 
 
 
 
Symbol Rate
5120 KSym/s
0 KSym/s
0 KSym/s
 
 
 
 
 
Power Level
48.25 dBmV
0.00 dBmV
0.00 dBmV
 
 
 
 
 
Modulation
64 QAM
QPSK
QPSK
 
 
 
 
 
Channel Type
DOCSIS2.0 (ATDMA)
(Unknown)
(Unknown)
Expert

Re: do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconne

The upstream power is on the high side and the modem is locking on to only a single upstream channel. Have you first tried power-cycling / re-starting the modem ?



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
Frequent Visitor

Re: do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconne

Yes
Expert

Re: do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconne

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
Frequent Visitor

Re: do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconne

im also getting this for CM errors. 

CM Error Codewords
Unerrored Codewords
175702613
170326002
170477738
170717747
170803932
170941090
171343647
171629818
172428591
173567146
173902676
173579239
172452057
172133409
172220908
172273239
171886899
171714350
172261987
173828673
175277805
175158791
174039534
173750066
0
0
0
0
0
0
0
0
Correctable Codewords
9979270
11072353
11353073
11530890
11542860
11583140
11790823
11816108
11790081
11390410
11247100
11413526
11890680
11950286
11881284
11869923
11895180
11893476
11831613
11251495
10319845
10427706
11169962
11335563
0
0
0
0
0
0
0
0
Uncorrectable Codewords
443588
4726098
4296162
3886143
3784684
3620029
3018964
2699303
1924541
1180274
1004882
1162405
1790100
2075839
2028297
1996692
2364293
2538926
2047463
1072946
568903
579320
946535
1077077
0
0
0
0
0
0
0
0
Frequent Visitor

Re: do these values look correct speed went down to 10-15Mbps from 250-280Mbps and constant disconne

values better today just now wondering if there is work in the area speeds up to 100Mbps

M Error Codewords
Unerrored Codewords
478100346
504478369
504476744
504481675
504472596
478105377
478105601
478106045
478105843
478105184
478106448
478106916
478107019
478107263
478107466
478106157
478107172
478104070
478104773
478102226
478101614
497465760
504468421
504481309
0
0
0
0
0
0
0
0
Correctable Codewords
198
1656
1884
922
826
48
62
69
270
270
175
46
207
84
81
882
1165
1555
933
1441
2352
17192
10184
1169
0
0
0
0
0
0
0
0
Uncorrectable Codewords
1824
31361
25536
28933
34019
11268
11244
11342
11663
12576
11633
11614
11545
11736