Visitor
•
8 Messages
Unable to reach 200Mbps upload, no OFDMA upload channel
Hello Xfinity, I recently got notice that I was upgraded to the 200Mbps upload speed tier and was sent a technician yesterday to check physical connections around my home. After the technician cut and rejoined all connection points, I did some tests overnight and was not able to reach 200Mbps upload speeds.
Around 12pm I tested 70Mbps upload, 6pm 40Mbps, 12am 7Mbps, 6am 40Mbps, 12pm 70Mbps
I am using an XB8 that was newly installed by yesterday's technician's visit.
Below are values from the modem. I will note that I have not seen an OFDMA channel appear in the upload section.
Thank you for your time!
|
Downstream
|
Channel Bonding Value | ||||||||||||||||||||||||||||||||
| Channel ID |
4
|
1
|
2
|
3
|
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
|
193
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
| Frequency |
435 MHz
|
417 MHz
|
423 MHz
|
429 MHz
|
441 MHz
|
447 MHz
|
453 MHz
|
459 MHz
|
465 MHz
|
471 MHz
|
477 MHz
|
483 MHz
|
489 MHz
|
495 MHz
|
501 MHz
|
507 MHz
|
513 MHz
|
519 MHz
|
525 MHz
|
531 MHz
|
537 MHz
|
543 MHz
|
549 MHz
|
555 MHz
|
561 MHz
|
567 MHz
|
573 MHz
|
579 MHz
|
585 MHz
|
591 MHz
|
597 MHz
|
603 MHz
|
957000000
|
| SNR |
44.9 dB
|
45.1 dB
|
44.9 dB
|
45.0 dB
|
44.8 dB
|
44.8 dB
|
45.1 dB
|
45.0 dB
|
45.0 dB
|
44.7 dB
|
45.0 dB
|
45.1 dB
|
44.9 dB
|
44.6 dB
|
40.7 dB
|
37.9 dB
|
42.3 dB
|
44.6 dB
|
44.1 dB
|
44.5 dB
|
44.6 dB
|
44.7 dB
|
44.5 dB
|
44.5 dB
|
44.6 dB
|
44.5 dB
|
44.5 dB
|
44.6 dB
|
44.7 dB
|
44.5 dB
|
44.5 dB
|
40.0 dB
|
39.5 dB
|
| Power Level |
6.3 dBmV
|
6.5 dBmV
|
6.3 dBmV
|
6.3 dBmV
|
6.0 dBmV
|
6.2 dBmV
|
6.6 dBmV
|
6.5 dBmV
|
6.5 dBmV
|
6.4 dBmV
|
6.5 dBmV
|
6.6 dBmV
|
6.6 dBmV
|
6.0 dBmV
|
6.1 dBmV
|
6.4 dBmV
|
6.2 dBmV
|
6.2 dBmV
|
6.4 dBmV
|
6.2 dBmV
|
6.1 dBmV
|
6.3 dBmV
|
6.2 dBmV
|
6.1 dBmV
|
6.5 dBmV
|
6.4 dBmV
|
6.2 dBmV
|
6.3 dBmV
|
6.6 dBmV
|
6.3 dBmV
|
6.3 dBmV
|
6.3 dBmV
|
-2.7 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
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
OFDM
|
|
Upstream
|
Channel Bonding Value | ||||
| Channel ID |
17
|
18
|
19
|
20
|
|
|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
|
| Frequency |
16 MHz
|
22 MHz
|
29 MHz
|
35 MHz
|
|
| Symbol Rate |
5120
|
5120
|
5120
|
5120
|
|
| Power Level |
46.5 dBmV
|
47.5 dBmV
|
48.5 dBmV
|
48.5 dBmV
|
|
| Modulation |
QAM
|
QAM
|
QAM
|
QAM
|
|
| Channel Type |
ATDMA
|
ATDMA
|
ATDMA
|
ATDMA
|
|
| CM Error Codewords | |||||||||||||||||||||||||||||||||
| Channel ID |
4
|
1
|
2
|
3
|
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
|
193
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unerrored Codewords |
1665999995
|
16514765
|
16522095
|
16526358
|
16533866
|
16535972
|
16543892
|
16548000
|
16554311
|
16560439
|
16564880
|
16570790
|
16574552
|
16581832
|
16589901
|
16593906
|
16600884
|
16609058
|
16615709
|
16620015
|
16628224
|
16632374
|
16640052
|
16645416
|
16650456
|
16658697
|
16664758
|
16670022
|
16677460
|
16682693
|
16683997
|
16687226
|
1665999995
|
| Correctable Codewords |
685114348
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
685114348
|
| Uncorrectable Codewords |
5
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
5
|
Accepted Solution
jjexpat00
Visitor
•
8 Messages
7 months ago
Working with the online support in this forum was fruitless and kept a cycle of send info, send tech out, no resolution by tech, repeat. This issue was finally resolved via an escalation by consumer complaint at the FCC. [Edited: "Solicitation"]
After my complaint was made (Jan 11, 2023), I was immediately put in contact with a representative from Xfinity Executive Customer Relations (Jan 13, 2023). After several weeks of discussion with network teams alongside several service visits by technicians to provide diagnostics, the representative was able to identify issues with:
Following changes made to both of the above (Feb 8, 2023), my XB8 modem identified the OFDMA channel successfully, and wired upload speeds reached 200 Mbps.
(edited)
3
0
XfinityRyanE
Official Employee
•
1.1K Messages
11 months ago
Hello @jjexpat00, thanks for refacing out for help with your connections. Our team will be glad to take a look at your account and location in more detail. To get started, please use the chat icon in the upper right to enter Direct Messaging and send us a message with your full name and full address.
Here are the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "direct messaging" icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message
Please let me know if you have any questions or run into any problems.
1
0
user_xv26h6
1 Message
9 months ago
Hi! Were you able to fix your issue? I also only have 4 ATDMA bonded channels for upstream. Thanks!
2
0
jjexpat00
Visitor
•
8 Messages
8 months ago
Still no resolution to this issue. Ran a speed test today and am getting 1200 down and 6 up.
0
0
user_noname
Contributor
•
168 Messages
7 months ago
@jjexpat00 - based on the Upstream information you posted above, it looks like based on the frequencies, you still have the Sub-Split (5-42MHz) and in order to get 200Mbps upload speed you must have the Mid-Split upstream spectrum (5-85MHz), Xfinity has documented this in this Article (scroll down about half way)
0
0
user_izk211
5 Messages
5 months ago
I have the same issue at my home. How can I get help? I get only 80mbps and not the 200 mbps upload (I get the full 1200 mbps download). Who can help me from Xfinity? I have been in circles with Comcast support to no end.
0
0