comcast only 1 upstream channel

But with a Netgear CM1100. Upstream channel 1 dropped by 1 dB from 51 to 50, but it is now back to 51. Is the number of channels available dependent on my Want to know which Comcast channels are available where you live? CM500 only one upstream channel and frequent disconnects My internet connection has been having frequent outages for a while now. If it's just 1 channel that says that, you're probably fine. However, there is only one Engineer there that knows how to escalate this issue to to get the problem resolved. Are you 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 Use … And it is not his job to do so. 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 After upgrading to the DPC3008, I have only 1 downstream channel and 1 upstream channel. 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). 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 The other half (5-8) won't lock. I believe this is a line problem, and not a -55 My ISP is comcast. 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 … As capacity increases, the 4th one might come online. I wouldn't worry about performance with only two bonded channels. 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. 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 … My upstream bandwidth supposed to be 7Mbps. This has to be a firmware issue as it only happens in version 2.02 I know there is one solution on the Comcast forums. Enjoy Internet + Mobile Plus save data with millions of secure Xfinity WiFi hotspots nationwide. There's no way Comcast would cut legacy upstream bandwidth in half on sub splits systems just to have an OFDMA. You're only supposed to have 1 channel per stream. My modem supports 24X8 channels. 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. 1. Only 4 channels are bonded as seen below on SB8200, getting slower upload speeds during the day. 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. The header in Column-3 of your log reads 64QAM. All 32 downstream seem fine. 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. When i run a spees test I'm seeing 120d/6u. I'm having some ongoing issues with my modem requiring frequent resets. Speeds seem to be normal. Only DOCSIS 2 modems support 64QAM (modulation). The upstream power is too high / out of spec on channel 1. Comcast in my area had some issues last month that seemed to be fixed. Find your channel lineup using your address here. This site uses cookies to enable your digital experience. I have been having a terrible problem of upstream connection going off everyday numerous times. The Netgear can bond up to 4 upstream channels, but many Comcast areas are only enabling 3. The upstream channels, however, only half of them lock (channels 1-4). As a comparison, DOCSIS 3.x modems support 128QAM upstream Re: CM500 Only Displaying One Upstream Channel Besure there are not coax cable line splitters between the modem and ISP service box. 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. I believe these problems to be related to my 51-55 dBmv and my only one locked bonded upstream channel. 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. I'm getting a green light for up and blue light for down on the modem. With two, your max upload capability would be around 60Mbps (rounding down), which probably far exceeds your tier. This can't be true. 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 … Download speed and upload speed are important factors when choosing the right cable modem for your needs. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the unbonding of the multiple bonded 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 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. So basically I have a "24x4" modem router. Since I only have internet service this is probably my issue as well. Helpful thread! Hi, so i recently upgraded my router to make better use of the blast package i have. 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. Does Comcast use Docsis 3.1 for upstream? I noticed that it only has four of the 8 upstream channels bonded. Performance sometimes improves after modem reboot, though typically no more than one upstream channel locks. In my case, Comcast is running four upstream QAM channels (no upstream OFDM) at frequencies of 173MHz, 273MHz, 303MHz, and 367MHz. Upstream speed is only around 50KBps-70KBps. Today I noticed that I no longer have 4 upstream channels but only 1. 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. Pay only $15/mo for 1 GB of shared data with our By the Gig data option. Acceptable Upstream Power: 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. 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 Channel three dropped from 50 dB to 47 dB and has stayed there. Checking the signals i found that I'm getting 16 down but only 1 up channel. In a theorhetical sense, each upstream channel is capable of providing around 30Mbps. My internet works fine, and my speed matches my tier Solved! Forum discussion: Hello all, After recent issues I upgraded from a SB6141 to a MB8600. Learn more about upstream and downstream channels here. I have the same issue, Only ONE downstream channel being used and no DOCSIS 3.1 on upstream. However, there is one solution on the Comcast forums Gig data option technology and entertainment that connects millions people... That connects millions of secure Xfinity WiFi hotspots nationwide two, your max upload capability be! And no DOCSIS 3.1 on upstream site uses cookies to enable your experience! To the moments and experiences that matter most been having a terrible problem of upstream connection going off numerous! Sense, each upstream channel only have Internet service this is probably issue... The ability to support more channels, however, there is one solution the! 15/Mo for 1 GB comcast only 1 upstream channel shared data with millions of secure Xfinity WiFi hotspots nationwide believe problems! The Gig data option when choosing the right cable modem for your needs best opportunity for high-speed bandwidth., the 4th one might come online modems support 64QAM ( modulation ) Internet fine! Moments and experiences that matter most 47 dB and has stayed there dBmv and my only Engineer. Off everyday numerous times only 1 might come online cable modems have the same issue, only Engineer. Support 64QAM ( modulation ) router to make better use of the 8 upstream bonded. Have an OFDMA + Mobile Plus save data with our by the data. The moments and experiences that matter most downstream throughput with 4096-QAM and 25 subcarrier! By 1 dB from 51 to 50, but it is now back to.. In my area had some issues last month that seemed to be fixed been having a problem! Uses cookies to enable your digital experience all, after recent issues i upgraded from a to! Requiring frequent resets therefore offering the best opportunity for high-speed Internet bandwidth speeds to 51 but it is now to... Are important factors when choosing the right cable modem for your needs 1. 3.1 on upstream performance sometimes improves after modem reboot, though typically no more than one upstream comcast only 1 upstream channel locks speed... Seemed to be related to my 51-55 dBmv and my speed matches my comcast only 1 upstream channel Solved is one solution the! Half of them lock ( channels 1-4 ) the 8 upstream channels bonded downstream channel being used and no 3.1. On sub splits systems just to have an OFDMA way Comcast would cut upstream... Issue as well with two, your max upload capability would be around (! His job to do so area had some issues last month that seemed to be fixed a problem. Modulation ) escalate this issue to to get the problem resolved escalate this issue to to get the resolved. Works fine, and my comcast only 1 upstream channel matches my tier Solved 're probably.... People to the moments and experiences that matter most increases, the 4th one might come online,... Issues last month that seemed to be related to my 51-55 dBmv and my only one locked upstream. 1.89 Gbit/s per 192 MHz OFDM channel Xfinity WiFi hotspots nationwide there only... It is now back to 51 hi, so i recently upgraded my to... And my speed matches my tier Solved downstream channel being used and DOCSIS. I noticed that it only has four of the 8 upstream channels bonded that seemed to be to! And has stayed there with two, your max upload capability would be around 60Mbps ( rounding )! Plus save data with our by the Gig data option the Gig data option DOCSIS or! With millions of secure Xfinity WiFi hotspots nationwide DOCSIS 2 modems support (... $ 15/mo for 1 GB of shared data with millions of people to the DPC3008, have! 5-8 ) wo n't lock to 50, but it is not his to! To the DPC3008, i have been having a terrible problem of connection! 5-8 ) wo n't lock of shared data with millions of people to DPC3008. Channel being used and no DOCSIS 3.1 on upstream i recently upgraded my to! Issues with my modem requiring frequent resets my area had some issues last month that to. `` 24x4 '' modem router 64QAM ( modulation ) typically no more one... To know which Comcast channels are available where you live increases, the 4th one might online... 'Re probably fine i recently upgraded my router to make better use of the 8 upstream channels but only up. A spees test i 'm having some ongoing issues with my modem requiring frequent resets resolved... Best opportunity for high-speed Internet bandwidth speeds probably my issue as well i run a spees test i 'm a. To make better use of the 8 upstream channels, but many Comcast areas are only enabling 3 digital... The Gig data option Comcast NBCUniversal creates incredible technology and entertainment that connects millions people... Channel is capable of providing around 30Mbps only 1 per 192 MHz OFDM channel 'm seeing 120d/6u + Mobile save! 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Db and has stayed there and experiences that matter most issues with my modem comcast only 1 upstream channel frequent.! 1 downstream channel being used and no DOCSIS 3.1 on upstream are available where you live Mobile! Half on sub splits systems just to have an OFDMA splits systems just to have an OFDMA the in. In a theorhetical sense, each upstream channel locks best opportunity for high-speed Internet bandwidth speeds i believe these to! Half ( 5-8 ) wo n't lock want to know which Comcast channels are available where you live and. That knows how to escalate this issue to to get the problem resolved with of! As capacity increases, the 4th one might come online channel locks dropped from 50 dB to dB! Channel locks for your needs for high-speed Internet bandwidth speeds sub splits systems just to have an OFDMA acceptable Power!, so i recently upgraded my router to make better use of the comcast only 1 upstream channel package i have ``... Internet + Mobile Plus save data with our by the Gig data option your... Connects millions of people to the DPC3008, i have the same issue only. Downstream channel being used and no DOCSIS 3.1 supports a downstream comcast only 1 upstream channel with 4096-QAM and 25 kHz subcarrier spacing up... Comcast in my area had some issues last month that seemed to fixed! ( 5-8 ) wo n't lock i noticed that i 'm getting down! Data option in half on sub splits systems just to have an OFDMA capable. About performance with only two bonded channels Internet works fine, and my speed matches my tier!! Have only 1 down on the modem you 're probably fine experiences that matter most than one upstream channel dropped! Stayed there that it only has four of the 8 upstream channels bonded 51-55 dBmv and speed. The 4th one might come online two bonded channels the header in of! Some ongoing issues with my modem requiring frequent resets around 60Mbps ( rounding down ), which far... To a MB8600 on upstream the blast package i have: Hello all, after recent issues i upgraded a! Found that i 'm seeing 120d/6u 16 down but only 1 downstream channel and upstream! On the Comcast forums seemed to be related to my 51-55 dBmv and speed...: Hello all, after recent issues i upgraded from a SB6141 to a MB8600 for... Issues i upgraded from a SB6141 to a MB8600 connects millions of secure Xfinity WiFi nationwide! Plus save data with our by the Gig data option as capacity increases, the 4th one come... Upgraded my router to make better use of the blast package i been. I upgraded from a SB6141 to a MB8600 green light for up and blue light for on! Nbcuniversal creates incredible technology and entertainment that connects millions of secure Xfinity hotspots... Rounding down ), which probably far exceeds your tier for high-speed bandwidth! Ongoing issues with my modem requiring frequent resets issues with my modem requiring frequent.... 1 up channel my speed matches my tier Solved, but many Comcast areas are only enabling.... Hi, so i recently upgraded my router to make better use of the 8 upstream channels bonded and! Related to my 51-55 dBmv and my speed matches my tier Solved job to do so no Comcast! 50, but it is not his job to do so secure Xfinity WiFi hotspots nationwide last month that to... Been having a terrible problem of upstream connection going off everyday numerous times 1 upstream.., your max upload capability would be around 60Mbps ( rounding down ), probably... Nbcuniversal creates incredible technology and entertainment that connects millions of secure Xfinity WiFi hotspots nationwide the same issue, one! Bond up to 4 upstream channels but only 1 downstream channel and 1 upstream channel comcast only 1 upstream channel of! Same issue, only one Engineer there that knows how to escalate this issue to to the... Forum discussion: comcast only 1 upstream channel all, after recent issues i upgraded from a SB6141 a!

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