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Upstream Noise Causing T3 Timeouts & OFDMA Profile Drops (Daily Pattern)
Symptoms Repeated T3 timeouts (never T4) OFDMA profile flapping between 10 ↔ 11 ↔ 12 Occasional CCAP commanded power mismatch warnings Short upload freezes during noise bursts OFDMA always relocks afterward No downstream issues at all (SNR 40–41 dB, OFDM PLC 42–43 dB) My upstream transmit power stay
Question
The modem didn't crash last night (thankfully). Below is the log update, which shows events that I haven't seen before. Perhaps it's due to maintenance work. There has been a noticeable improvement during teleconferences throughout the day.
Upstream Noise Causing T3 Timeouts & OFDMA Profile Drops (Daily Pattern)
Symptoms Repeated T3 timeouts (never T4) OFDMA profile flapping between 10 ↔ 11 ↔ 12 Occasional CCAP commanded power mismatch warnings Short upload freezes during noise bursts OFDMA always relocks afterward No downstream issues at all (SNR 40–41 dB, OFDM PLC 42–43 dB) My upstream transmit power stay
Question
Price increase $60 since 2024
I started xfinity on a mid tier plan for $40 and after stead price increases over the past 2 years to $68 a month, today it jumped to $108. With all the frequent outages in my area and slow speeds, I’d like my monthly bill either lowered to a reasonable rate or cancelled
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Billing
Hi there, @user_whqpg6 I’m really sorry you’ve had to go through all of that it sounds incredibly frustrating and exhausting. Dealing with a damaged phone is stressful on its own, and having to visit multiple stores, speak to so many reps
Horrible Customer Service
Does anyone have good experiences with this company? My phone was damaged a week ago and since then, I have gone to 4 stores, talked to 17 customer service reps, been charged $600, and had hours an hours of my time wasted; oh and still no phone. I actually lost a job I needed due to no phone. A phon
Question
@user_793642 Did you block the other numbers?
SPAM block settings question
If I set the High, Medium & Low Spam Risk all to Block, does that mean any call that indicates SPAM in the caller ID will be blocked?
Question
I received the following email. Is it a scam? ... Yes, it is! Dozens of similar emails have been posted here. Such emails are scams. "Update" emails that have any sort of "do this or lose your access" demand are almost always scams, especial
Updated terms of service email
I received the following email. Is it a scam? MyXfinityEmail® Last week, we notified you about important updates to our Terms of Service, Security Policy, and Privacy Policy. As part of these updates, older versions of the Comcast/Xfinity Mail platform will be retired As from Today, June 10, 2026. T
Question
Xfinity Mobile show NO ACCOUNT yet I still have service and am being charged.
We have had Xfinity WiFi service for years and still currently four Xfinity Mobile lines. We no longer have Xfinity WiFi due to the constant lies told to us by Xfinity. We simply stopped paying the bill, which left us with a negative account and ultimately went to collections. Fast forward to my Son
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Plan
Horrible Customer Service
Does anyone have good experiences with this company? My phone was damaged a week ago and since then, I have gone to 4 stores, talked to 17 customer service reps, been charged $600, and had hours an hours of my time wasted; oh and still no phone. I actually lost a job I needed due to no phone. A phon
Question
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Customer Service
I cannot connect to USA websites but I can connect to Germany and Russia
I cannot connect to AOL, Amazon, Facebook et al but I can connect to Chase, Germany and Russia. I've rebooted computer. modem and router. I've uninstalled and reinstalled Chrome. I've run speed test and speed is ONLY 250 and latency is HIGH.
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Your Home Network
Help me
I have a few things that have problems with first thing is a representative sold me the prepaid Internet, then I have a TV box come to find out the TV box will not hook up to the prepaid Internet, so that doesn’t work anymore. Now I would like to trade in a phone and upgrade to a Samsung and every t
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Devices
The thing is that it used to work just fine and then it stopped. They person we talked to said they did not know of any list of supported providers. The alternate verification option is a voice call. Our bank is the only company that we are ha
Certain text messages/phone numbers are not coming through
Recently text messages from our bank are no longer coming through. Checked with the bank are all settings are correct. For testing switched the notification to voice call to get the bank code and that works, switching back to text and nothing comes through. I don't have any numbers blocked on my end
Question
I have responded.......
1Gpbs symmetrical service capped at ~500Mpbs upload
Hello Comcast/Xfinity Support, I’m on the 1 Gbps symmetrical Internet plan. My download speeds consistently exceed expectations (1.2 Gbps), but my upload speeds are stuck at 40-50% of this, regardless of time of day. This used to work for weeks at a time and fixed itself after a modem restart. No lo
Question
Using wi fi jammers ti disrupt my wifi
My internet is being hacked, interrupted and disconected by some next store neighbors since March of 2025. I have a doorbell camera and I have noticed several times that gets disconnected, recordings go down to 1 second and sometimes it doesn't even show someone at my door because I seen a couple of
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Your Home Network
Updated terms of service email
I received the following email. Is it a scam? MyXfinityEmail® Last week, we notified you about important updates to our Terms of Service, Security Policy, and Privacy Policy. As part of these updates, older versions of the Comcast/Xfinity Mail platform will be retired As from Today, June 10, 2026. T
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Thank you, @sylvaing for that additional information. Let's get your account pulled up, so we can look deeper into this for you. Can you please DM me your full first and last name along with your full service address so that I can assist you further.
1Gpbs symmetrical service capped at ~500Mpbs upload
Hello Comcast/Xfinity Support, I’m on the 1 Gbps symmetrical Internet plan. My download speeds consistently exceed expectations (1.2 Gbps), but my upload speeds are stuck at 40-50% of this, regardless of time of day. This used to work for weeks at a time and fixed itself after a modem restart. No lo
Question
Email access [Edited]
Cannot connect to my email. Error message states server ip address may be fraudulent. "Title Edited: "Personal Information"]
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Sign-In and Account Management
Yes I am testing hardwired. Upload has averaged about 500.
1Gpbs symmetrical service capped at ~500Mpbs upload
Hello Comcast/Xfinity Support, I’m on the 1 Gbps symmetrical Internet plan. My download speeds consistently exceed expectations (1.2 Gbps), but my upload speeds are stuck at 40-50% of this, regardless of time of day. This used to work for weeks at a time and fixed itself after a modem restart. No lo
Question
The modem didn't crash last night (thankfully). Below is the log update, which shows events that I haven't seen before. Perhaps it's due to maintenance work. There has been a noticeable improvement during teleconferences throughout the day.
user_kerfuffleized
commented
17 hours ago
to the conversation:
0
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Upstream Noise Causing T3 Timeouts & OFDMA Profile Drops (Daily Pattern)
Symptoms Repeated T3 timeouts (never T4) OFDMA profile flapping between 10 ↔ 11 ↔ 12 Occasional CCAP commanded power mismatch warnings Short upload freezes during noise bursts OFDMA always relocks afterward No downstream issues at all (SNR 40–41 dB, OFDM PLC 42–43 dB) My upstream transmit power stay
Question