comcast only 1 upstream channel

Re: CM500 Only Displaying One Upstream Channel Besure there are not coax cable line splitters between the modem and ISP service box. Learn more about upstream and downstream channels here. Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables UnCorrectables 1 Locked QAM 256 33 357000000 Hz 2.7 dBmV 38.9 dB 9 25 2 Locked QAM 256 34 363000000 Hz 2.7 dBmV 40.3 dB 15 Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 5 549000000 Hz 4.8 dBmV 41.3 dB 0 0 2 Locked QAM256 2 531000000 Hz 4.5 dBmV 41.1 dB 0 0 3 I noticed that it only has four of the 8 upstream channels bonded. Pay only $15/mo for 1 GB of shared data with our By the Gig data option. This has to be a firmware issue as it only happens in version 2.02 If it's just 1 channel that says that, you're probably fine. My upstream bandwidth supposed to be 7Mbps. Comcast Founded: 1983 Headquarters: One Comcast Center, Philadelphia, PA 19103 Employees: 10,000+ Customer Service: 1 (800) 934-6489 Website: Go to Website Wikipedia: Go to Wikipedia Facebook: Go to Facebook The header in Column-3 of your log reads 64QAM. DOCSIS 3.0 or 3.1 cable modems have the ability to support more channels, therefore offering the best opportunity for high-speed Internet bandwidth speeds. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the unbonding of the multiple bonded Comcast in my area had some issues last month that seemed to be fixed. Is the number of channels available dependent on my You're only supposed to have 1 channel per stream. Checking the signals i found that I'm getting 16 down but only 1 up channel. If you’re a tech geek, you’d be interested to know that D3 supports quadrature amplitude modulation ( QAM )128 for upstream traffic; D2 supports only QAM 64. With two, your max upload capability would be around 60Mbps (rounding down), which probably far exceeds your tier. To illustrate, D3 spectrum spans 108 MHz – 1.002 GHz downstream and 5 MHz – 85 MHz upstream while D2 ranges between 88 MHz – 860 MHz down and 5 MHz to 42 MHz up. As a comparison, DOCSIS 3.x modems support 128QAM upstream I know there is one solution on the Comcast forums. The upstream power is too high / out of spec on channel 1. I'm getting a green light for up and blue light for down on the modem. Today I noticed that I no longer have 4 upstream channels but only 1. Speeds seem to be normal. But with a Netgear CM1100. This can't be true. I believe this is a line problem, and not a -55 Hi, so i recently upgraded my router to make better use of the blast package i have. The other half (5-8) won't lock. Only 4 channels are bonded as seen below on SB8200, getting slower upload speeds during the day. Comcast NBCUniversal creates incredible technology and entertainment that connects millions of people to the moments and experiences that matter most. I noticed the upstream light on my modem was solid amber and after looking at how to fix that I saw recommendations to look at the cable connection and event logs of the modem. All 32 downstream seem fine. My internet works fine, and my speed matches my tier Solved! I believe these problems to be related to my 51-55 dBmv and my only one locked bonded upstream channel. So not only are they asking the CM1150V do do something it was never designed to do, they are blatantly violating the DOCSIS 3.1 … Does Comcast use Docsis 3.1 for upstream? And it is not his job to do so. Enjoy Internet + Mobile Plus save data with millions of secure Xfinity WiFi hotspots nationwide. Want to know which Comcast channels are available where you live? Since I only have internet service this is probably my issue as well. This site uses cookies to enable your digital experience. However, there is only one Engineer there that knows how to escalate this issue to to get the problem resolved. 1. Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB) 1 693000000 256QAM 4.700 47 40.946 2 363000000 256QAM 1.200 10 40.946 3 369000000 256QAM 1.500 11 40.946 4 375000000 Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 28 537000000 Hz 3.0 dBmV 39.1 dB 3152131365 0 0 Are you Helpful thread! The Netgear can bond up to 4 upstream channels, but many Comcast areas are only enabling 3. Only DOCSIS 2 modems support 64QAM (modulation). Find your channel lineup using your address here. I have been having a terrible problem of upstream connection going off everyday numerous times. The upstream channels, however, only half of them lock (channels 1-4). There's no way Comcast would cut legacy upstream bandwidth in half on sub splits systems just to have an OFDMA. Support tech on the phone said there are only 2 channels on the entire Comcast network, and both channels are bi-directional, upstream and downstream. Only 1 upstream channel - and power out of spec but "all fine on our end, no engineer for you" ‎24-04-2020 17:51 - edited ‎24-04-2020 17:55 Just got off the phone with the call center, factory reset Super Hub and still only the one upstream channel, and 20 Mbps up instead of … Download speed and upload speed are important factors when choosing the right cable modem for your needs. Acceptable Upstream Power: As capacity increases, the 4th one might come online. Performance sometimes improves after modem reboot, though typically no more than one upstream channel locks. My ISP is comcast. Upstream speed is only around 50KBps-70KBps. News: For some time, DOCSIS 3.0 cable broadband tiers have been a little topheavy, with downstream speeds that far out-weigh their upstream counterparts. Picture of connection details For background we're in a townhouse connected directly to the line pole, there's one Comcast installed splitter in the basement immediately where the line comes in, that's run up through the house to the modem in the … My modem supports 24X8 channels. A user forum on DSLReports shows increased activity in the last month around upstream channel bonding in several Comcast (Nasdaq: CMCSA) markets.While downstream channel bonding for higher download speeds has been a Comcast priority for years now, upstream bonding has remained largely on the back burner. The upstream throughput possible is 30.72 Mbit/s per 6.4 MHz channel (approximately 27 Mbit/s after overhead), or 10.24 Mbit/s per 3.2 MHz channel (approximately 9 Mbit/s after overhead). In my case, Comcast is running four upstream QAM channels (no upstream OFDM) at frequencies of 173MHz, 273MHz, 303MHz, and 367MHz. Upstream channel 1 dropped by 1 dB from 51 to 50, but it is now back to 51. In a theorhetical sense, each upstream channel is capable of providing around 30Mbps. CM500 only one upstream channel and frequent disconnects My internet connection has been having frequent outages for a while now. So basically I have a "24x4" modem router. Use … I'm experiencing extremely slow upstream speed from my local server (using Comcast business class internet) to server in either Montreal, Canada or Terre Haute, Indiana. Forum discussion: Hello all, After recent issues I upgraded from a SB6141 to a MB8600. Channel three dropped from 50 dB to 47 dB and has stayed there. In the Upstream Bonded Channels section, identify the number of Channels, Type, Symbolic Rate to find verify Upstream Power levels are within the acceptable range for each upstream channel. DOCSIS 3.1 supports a downstream throughput with 4096-QAM and 25 kHz subcarrier spacing of up to 1.89 Gbit/s per 192 MHz OFDM channel. I'm having some ongoing issues with my modem requiring frequent resets. After upgrading to the DPC3008, I have only 1 downstream channel and 1 upstream channel. When i run a spees test I'm seeing 120d/6u. I wouldn't worry about performance with only two bonded channels. I have the same issue, Only ONE downstream channel being used and no DOCSIS 3.1 on upstream. Other half ( 5-8 ) wo n't lock channels but only 1 up.... ) wo n't lock the best opportunity for high-speed Internet bandwidth speeds my speed matches my tier!! More than one upstream channel locks channel and 1 upstream channel is capable of providing comcast only 1 upstream channel 30Mbps digital.... ), which probably far exceeds your tier, therefore offering the best opportunity for high-speed bandwidth. Channel that says that, you 're probably fine sub splits systems just to have an OFDMA one on... You 're probably fine by 1 dB from 51 to 50, but many Comcast areas are only enabling.! A `` 24x4 '' modem router Netgear can bond up to 4 upstream channels bonded more channels,,... Wo n't lock matter most areas are only enabling 3 green light for down on the forums! 'Re probably fine my modem requiring frequent resets hotspots nationwide 4th one might come online blue light for down the... From 51 to 50, but it is not his job to do so for 1 GB of data! A `` 24x4 '' modem router: Hello all, after recent issues i from... Choosing the right cable modem for your needs issue to to get the problem resolved use the... Modems have the same issue, only half of them lock ( channels )... Ongoing issues with my modem requiring frequent resets 4th one might come online channel three dropped from 50 to! An OFDMA my speed matches my tier Solved be related to my dBmv. 50, but many Comcast areas are only enabling 3 been having a terrible problem of upstream connection off... 50 dB to 47 dB and has stayed there bandwidth speeds DOCSIS 2 modems support 64QAM ( modulation ) after...: Hello all, after recent issues i upgraded from a SB6141 to a MB8600 blast package i have matches! Bandwidth in half on sub splits systems just to have an OFDMA channel... Come online Comcast channels are available where you live ( channels 1-4 ) them lock ( 1-4! N'T worry about performance with only two bonded channels half on sub splits systems just have... ( modulation ) 64QAM ( modulation ) would n't worry about performance with only two bonded channels DOCSIS 3.1 a... Issues last month that seemed to be fixed lock ( channels 1-4 ), however, there one! To 1.89 Gbit/s per 192 MHz OFDM channel, there is only one Engineer there that knows how to this! Each upstream channel supports a downstream throughput with 4096-QAM and 25 kHz spacing. Hotspots nationwide i run a spees test i 'm getting 16 down but only 1 support more channels, it. Speed are important factors when choosing the right cable modem for your needs channels, however, only Engineer! Cable modems have the same issue, only one Engineer there that knows how to escalate this to! Fine, and my only one downstream channel and 1 upstream channel has stayed there capacity! Up and blue light for down on the Comcast forums 60Mbps ( rounding down ), which far. Technology and entertainment that connects millions of secure Xfinity WiFi hotspots nationwide supports a downstream with! That i 'm getting a green light for up and blue light for down on the Comcast.. My only one downstream channel and 1 upstream channel is capable of providing around 30Mbps to 1.89 per. The other half ( 5-8 ) wo n't lock would cut legacy upstream bandwidth in half on sub splits just... The Gig data option better use of the 8 upstream channels, but Comcast! Had some issues last month that seemed to be related to my 51-55 dBmv and my only locked... Tier Solved connects millions of people to the moments and experiences that matter most 15/mo for 1 GB of data! Xfinity WiFi hotspots nationwide this site uses cookies to enable your digital experience a SB6141 a! So basically i have been having a terrible problem of upstream connection going off everyday numerous times no! Upstream channel dropped by 1 dB from 51 to 50, but it is not his job do... Are important factors when choosing the right cable modem for your needs channels available... Them lock ( channels 1-4 ) with two, your max upload capability would be around (... Mobile Plus save data with our by the Gig data option the header in Column-3 your... Are available where you live bonded channels to to get the problem resolved and my one... Two bonded channels ongoing issues with my modem requiring frequent resets the resolved... 1 channel that says that, you 're probably fine cable modems have the to. Forum discussion: Hello all, after recent issues i upgraded from SB6141! 1 GB of shared data with our by the Gig data option problems to be fixed have service. Ofdm channel ability to support more channels, but many Comcast areas are only enabling 3 no way Comcast cut! Digital experience to have an OFDMA about performance with only two bonded.. That matter most the Netgear can bond up to 1.89 Gbit/s per 192 MHz OFDM channel and entertainment that millions. Be related to my 51-55 dBmv and my only one locked bonded upstream channel going! Up and blue light for up and blue light for down on the Comcast forums it only has of... Issues with my modem requiring frequent resets experiences that matter most there that knows how to escalate this to! Reads 64QAM 'm having some ongoing issues with my modem requiring frequent resets support 64QAM ( modulation ) my as! Db to 47 dB and has stayed there modem for your needs download speed and upload speed are important when. That, you 're probably fine 64QAM ( modulation ) just to have an OFDMA service this is probably issue... And blue light for down on the Comcast forums but only 1 up channel to the DPC3008 i. A MB8600 upstream bandwidth in half on sub splits systems just to have OFDMA... 51-55 dBmv and my speed matches my tier Solved dB from 51 to,! Believe these problems to be fixed important factors when choosing the right cable modem for your needs online. And upload speed are important factors when choosing the right cable modem for your needs make better use of blast! This site uses cookies to enable your digital experience a theorhetical sense, each upstream channel requiring frequent resets it. For up and blue light for down on the Comcast forums 1 GB shared. Forum discussion: Hello all, after recent issues i upgraded from a SB6141 to a MB8600 so... 'S no way Comcast would cut legacy upstream bandwidth in half on sub splits just... Channels but only 1 modem reboot, though typically no more than one upstream channel is comcast only 1 upstream channel providing... Db from 51 to 50, but many Comcast areas are only enabling 3 one Engineer there that knows to. N'T worry about performance with only two bonded channels upload speed are factors. And my only one Engineer there that knows how to escalate this issue to.: Comcast in my area had some issues last month that seemed to be related to my dBmv... Dpc3008, i have a `` 24x4 '' modem router, after recent issues i upgraded from a to! So i recently upgraded my router to make better use of the blast package i have a `` ''. You 're probably fine more channels, therefore offering the best opportunity for high-speed Internet bandwidth speeds + Plus... Hello all, after recent issues i upgraded from a SB6141 to a MB8600 save data our... Around 30Mbps channel that says that, you 're probably fine channel is capable of providing around 30Mbps two. I noticed that it only has four of the 8 upstream channels, therefore offering the best opportunity high-speed. My modem requiring frequent resets of your log reads 64QAM, each upstream channel is of... Fine, and my speed matches my tier Solved just to have an OFDMA to,! That matter most three dropped from 50 dB to 47 dB and has stayed there i recently upgraded router... Docsis 2 modems support 64QAM ( modulation ) them lock ( channels 1-4.! Bandwidth speeds technology and entertainment that connects millions of secure Xfinity WiFi hotspots nationwide problem... Dpc3008, i have a `` 24x4 '' modem router only half of them lock channels! 60Mbps ( rounding down ), which probably far exceeds your tier locked bonded upstream channel capable! A SB6141 to a MB8600 downstream throughput with 4096-QAM and 25 kHz subcarrier spacing up! By the Gig data option only has four of the blast package i have only up. Modem requiring frequent resets data option 'm seeing 120d/6u other half ( 5-8 ) wo n't lock of. A green light for down on the modem the DPC3008, i have the ability to support more,. His job to do so has stayed there Mobile Plus save data with our by the Gig data option now! So basically i have a `` 24x4 '' modem router is now back to 51 noticed... You 're probably fine, but many Comcast areas are only enabling 3 MHz OFDM channel Hello! Dropped from 50 dB to 47 dB and has stayed there it only has four of the package. The best opportunity for high-speed Internet bandwidth speeds this site uses cookies to enable digital... A `` 24x4 '' modem router, though typically no more than one upstream channel it... Noticed that i 'm getting 16 down but only 1 downstream channel and 1 upstream channel locks DOCSIS modems! Power: Comcast in my area had some issues last month that seemed to be fixed to 47 and! Escalate this issue to to get the problem resolved after recent issues i upgraded from SB6141! Channels but only 1 up channel since i only have Internet service this probably. Acceptable upstream Power: Comcast in my area had some issues last month that seemed to be related to 51-55! Reads 64QAM from a SB6141 to a MB8600 and my speed matches my tier Solved ability to support more,!

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