Only complaint still is loaded download latency test can get pretty high (800-900ms). Hello, We are experiencing multiple drop outs per hour / per day. OFDM is locked on mine not on gigablast tier though, Actually it does look like the OFDM channel is not currently showing, I dug a bit deeper and you (OP) are on one of the few nodes we have left that has not been enabled for DOCSIS 3.1. I was told the Docsis 3.1 frequencies are above 677Mhz. used?) NCP) indicates to the DOCSIS 3.1 cable modem at which subcarrier a Codeword starts within an OFDM symbol. There should always be at least 1 channel acquired with a DOCSIS 1.1 or 2.0 modem. 21 You will not be... Hello, I am not seeing anything out of the ordinary with the signal at this time and your modem isn't reporting any packet loss. Acquire Downstream Channel 555000000 Hz Locked Connectivity State In Progress Us parameters acquired Boot State In Progress Unknown Security Enabled BPI Downstream Channel Lock Status Not Ready Modulation 256QAM Channel ID 1 Provisioned Rate ---Symbol Rate 41879.195 Ksym/sec Downstream Power -1.0 dBmV SNR 39.0 dB Upstream Channel However, I am having an issue with downstream channel bonding. I am on the 100Mbps plan and in the Irmo, SC area (not sure if this is why upstream is limited to DOCSIS 3.0). Actually it does look like the OFDM channel is not currently showing, I dug a bit deeper and you (OP) are on one of the few nodes we have left that has not been enabled for DOCSIS 3.1. DS OFDM profile failure. I did have a filter that should have been removed when Spectrum went digital. My question would be: Is it common that not all the channels lock? It still would only lock (2) of the (4) upstream channels. • 2 OFDM downstream and 2 OFDMA upstream DOCSIS channels for faster, more clear data streaming • 802.11ax Dual Band WiFi (AX6000) – 2.4GHz AX: 3x3 (Tx/Rx) 1024 QAM 40MHz, up to 0.9Gbps ®– 5GHz AX: 3x3 (Tx/Rx) 1024 QAM 80MHz, up to 1.8Gbps • Backwards compatible with 802.11a/b/ •g/n/ac WiFi I'm ok with the increase upload speeds and slightly increased download as long as docsis 3.1 is in the works. NCP profile failure. This means your modem found the frequency with which to receive information from the internet. Hopefully we get fiber in my neighborhood one day, but Spectrum is all I have right now. I appreciate the accurate response I get through this forum. I'm seeing ~340 mbps max download speeds when doing a controlled test from my laptop wired directly into the modem. Channel 32 is not locked on. Upstream Bonded Channels Channel Modulation Channel ID Frequency Power 1 Locked ATDMA 5 36500000 Hz 47.0 dBmV 2 Locked ATDMA 6 30100000 Hz 47.5 dBmV 3 Locked ATDMA 7 23700000 Hz 47.0 dBmV 4 Locked ATDMA 8 17300000 Hz 47.5 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV Event Type Code: 1; Chan ID: 33 ; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A. ; The first 2 checked wiring etc which is a fine. Downstream Channels. My ISP is comcast. The downstream light does show blue on the front of the modem (indicating that DOCSIS 3.1 is being used for downstream). For some reason, my Arris SB8200 modem's status page shows only one channel being locked (e.g. So basically I have a "24x4" modem router. 1 Locked 0, 255 159 690000000 Hz 6.5 dBmV 39.5 dB 1366 ~ 2729 1192634081 903871793 0 2 Not Locked 0, 255 0 0 Hz 4.9 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Mine shows all 32 downstream channels being used now. If you want to get involved, click one of these buttons! Is Spectrum going to fix the Browser Flash player issue? I would definitely call them. Interestingly, upstream light is green (indicating DOCSIS 3.0 for upstream/send)? … Actually it does look like the OFDM channel is not currently showing, I dug a bit deeper and you (OP) are on one of the few nodes we have left that has not been enabled for DOCSIS 3.1. I checked my modem page on my CM1000 and I'm not seeing any OFDM channels locked. My frequencies are 477-677. There are also a lot of errors and critical messages. Docsis 3.1 and EuroDOCSIS 3.1 Cable Modem CM-3111(4) Ethernet over Coaxial Cable of CATV System The Model CM-3111(4) cable modem is fully compliant with the latest DOCSIS 3.1 specification as published by CableLabs® and is capable of delivering downstream cable speeds of up to 3.6 Gbps by using 2 Orthogonal Frequency-Division Multiplexing (OFDM) downstream channels … DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 . Can you see it on your(Cox) side? Upstream power levels are not good... should be settling in a couple points lower. Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV-----Time Priority Description Sun Oct 25 16:36:19 2020 Notice (6) CM-STATUS message sent. OFDMA subdivides a channel into smaller frequency allocations called resource units (RUs). Hi all, I'm once again experiencing horrific latency variation in games (Rocket League, Destiny, Warzone, Fortnite). Call Spectrum and request a technician for signal issues. Once the water had receded, the extent of the damage became clear. Great infromation, thanks! That's how D3.1 works. Download speed and upload speed are important factors when choosing the right cable modem for your needs. Upload speeds of 35mbps seem fairly consistent. Tried a couple power cycles, then a factory reset. ". A loss of FEC lock on one of the assigned downstream OFDM profiles of a channel. His extent of troubleshooting was just about rebooting the comcast modem and telling me the issues was on our network side. Tech was out once and said the issue was on our end. In that snapshot it is shouting on 3 channels trying to be heard at the head end and about to start screaming. The CM1150V will only bond (2) upstream channels. By properly … Need The Option to Unmark Accepted Answers If Solutions Don't Work. If it has to increase upstream power much more it may trigger an automatic reboot. California Consumer Do Not Sell My Personal Information, "CM-STATUS message sent. 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. Going to call them today and have them look through the errors and get my DOCSIS 3.1 blue light back. Learn more about upstream and downstream channels here. Since upgrading to 1GB a few months ago, my internet connection (wired and wireless) keeps dropping several times a day on multiple devices. 20. out of my modem's 32 channels?!? My internet works fine, and my speed matches my tier (250 Mbps). 100 examples: When the probe was moved downstream, the first subharmonic emerged from the… Upstream Vs. An upstream V is formed by an obstruction in the water that creates a V that points upstream. Since I only have internet service this is probably my issue as well. Hello, As I can't get through to a human on the phone, I thought it would be best to post here. Channels 1-31 are locked on, but I do not see any of the Docsis 3.1 frequencies allocated to the modem. FEC lock recovery. For some reason, my Arris SB8200 modem's status page shows only one channel being locked (e.g. Starting from Cisco IOS XE Everest 16.6.1 release, DOCSIS3.1 Upstream OFDMA channel can be bonded with DOCSIS3.0 ATDMA channel. • DOCSIS 3.0 Data rate up to 320 Mbps with 8 upstream channel bonding • DOCSIS 3.1 Modulation: Multi-carrier OFDMA BPSK to 4096QAM • DOCSIS 3.1 Data rate Up to 700Mbps with 1 OFDMA 80MHz upstream channels • Frequency: 5-85 MHz • Upstream transmit Signal Level: +11 to 65 dBmV • Output return loss: >6dB You will not be able to receive proper gig speeds until that is completed (we do not have an exact date on that, hopefully soon). 4G is the fourth generation of broadband cellular network technology, succeeding 3G, and preceding 5G.A 4G system must provide capabilities defined by ITU in IMT Advanced.Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.. Since I don’t see any OFDMA channels I’m assuming that’s your DOCSIS 3.0 modem not the CM1200. It displays the correct frequencies for the other two channels, but doesn't lock them -- and the upload LED continues to flash indicating "partial service". Below is the status page from my modem. My SNR and power levels are all well within acceptable ranges and I bond to all 4 channels upstream. For modulation on the one Locked downstream channel, it showed "OTHER" which really confused me (I'm an EE, but this isn't my area of expertise)... Could it be that it was a new modem I just bought today and firmware must have just been updated (lost internet a few minutes ago for maybe 5-10 minutes)? Move CM’s service flows back to original BG. Brian Cox Support Forum Moderator. But with a Netgear CM1100. Generating in-channel and out-of-channel upstream and downstream DOCSIS 3.1 signals. I just happen to see a tech removing filters down the street, and he added me to the list. Online gaming is becoming unplayable. ;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "REG RSP not received;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "TLV-11 - unrecognized OID;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Honoring MDD; IP provisioning mode = IPv4", "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;", "Resetting the cable modem due to docsDevResetNow", "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:0b:da:a5;CMTS-MAC=00:17:10:86:59:de;CM-QOS=1.1;CM-VER=3.1;", "Telnet user logged in from IP address 192.168.100.101. I did notice downstream light went to green (no DOCSIS 3.1 anymore) last night after my last post. Upstream power is in spec. Yep. Here is some additional information about our speed tests: Internet Forum requires membership for participation - click to join, www.cox.com/.../understanding-speed-test-results.html. This system uses an injection‐locking technique to enhance the usable bandwidth by making stable channel states. • 32 downstream & 8 upstream channels • 2 OFDM downstream and 2 OFDMA upstream channels for faster, more clear data streaming • AC3200 (1000Mbps @2.4GHz with 1024 QAM support + 2200Mbps @5GHz 11ac)† • Simultaneous Dual Band WiFi—Tx/Rx 4x4 (2.4GHz) + 4x4 (5GHz) • Beamforming+—For more reliable connections on 2.4 and 5GHz bands Page ... OFDMA 96MHz Channel Cable Modems OFDMA: Low-grant signals are those where less than about half of the subcarriers are active, and the remainder are transmitted as … It looks like you're new here. Your downstream power is a bit too high yet your downstream SNR is lower than expected with that power level. 38 Not Locked QAM256 0 Hz 0.0 dBmV 40.3 dB 0 0: 39 Locked QAM256 417000000 Hz 5.6 dBmV 40.1 dB 0 0: 40 Locked QAM256 423000000 Hz 5.3 dBmV 40.1 dB 0 0: 41 Locked QAM256 435000000 Hz 5.2 dBmV 40.0 dB 0 0: Upstream Bonded Channels: Channel Channel ID Lock Status US Channel Type Frequency Width Power The first-release Long Term … By subdividing the channel, parallel transmissions of small frames to multiple users happen simultaneously. Am I under the mistaken impression that OFDM channels are required for Gigablast? Helpful thread! I suspect you are absolutely correct about them doing upgrades in my area right now. The downstream light does show blue on the front of the modem (indicating that DOCSIS 3.1 is being used for downstream). 16. The modem indicates 3.1 / blue on the downstream but the upstream is showing 3.0 / green. I would expect to see SNR of 43-45dB with a 9-10dB power level. OFDMA is a technology that partitions a channel into smaller sub-channels so that simultaneous multiple-user transmissions can occur. DS OFDM Profile Manager will handle this event and take action. out of my modem's 32 channels?!? Tried it today though and got 101ms on fast.com. Loss of FEC lock on NCP. Those 3.0 channels max out around 38mbps throughput each. Upstream (per upstream service group) 12 SC‐QAM and 2 OFDMA (up to 95 MHz each) Set Top Box Out‐of‐Band (OOB) SCTE 55‐1 SCTE 55‐2 Out‐of‐Band2 Narrowband Digital Forward (NDF) —one NDF channel per downstream service group Acquire Downstream Channel: This should say "Locked", "OK" or similar. The current levels provided by Comcast are 38 - 42 across the 4-upstream channels. Here's the original images posted on google drive: https://drive.google.com/open?id=1R5laC1mY75xh2smkRolkDtv2DbeJAdss, https://drive.google.com/open?id=1Roewa-j2xNcV-sDae2YC0rVip0eoMImd. So if the modem is using this schema and hitting the 100mbps mark, it is bonding multiple channels to get there... at least 4 are in play. The upstream channels, however, only half of them lock (channels 1-4). Thanks for looking into this. Pretty sure OP should have OFDM channel locked. Checking with Arris they stated that the SB8200 requires a minimum upstream signal level of 45 dbmv. • 32 downstream & 8 upstream SC-QAM channels • 2 OFDM downstream and 2 OFDMA upstream channels for faster, more clear data streaming • AC3200 (1000Mbps @2.4GHz with 1024-QAM support + 2200Mbps @5GHz 11ac) † • Simultaneous dual-band WiFi—Tx/Rx 4x4 (2.4GHz) + 4x4 (5GHz) • Beamforming+—Focuses WiFi signals for After that short service loss, the status screen makes sense now and looks like the other posts I've seen: https://drive.google.com/open?id=17VDrhsocpCaSSgRO1UiqNzHpMLq8PR6D. 3 Agenda . used?) When I lost DOCSIS 3.1, dl speeds decreased 30-40%. The other half (5-8) won't lock. ABSTRACT We propose a scalable support WDM‐based orthogonal frequency division multiple access‐passive optical network uplink transmission system using an injection‐locked Fabry–Perot laser diode (IL‐FP‐LD). Hi,I upgraded to gigabit last week and initially the connection was okay, but for the past couple of days I’ve been getting very poor performance. Verifying DOCSIS3.1 Upstream OFDMA channel bonding across DOCSIS3.0 ATDMA channels. The modem used to bond to all 4 channels, now it only bonds to 2 channels. Looks like your market may still be transitioning to the new channel/frequency spectrums and it is causing some wonkiness. Move CM's service flows to RBG/NB or suspend RF from BG. The other half ( 5-8 ) wo n't lock checked wiring etc which a. Technician for signal issues 's service flows back to original BG the 4-upstream channels, Warzone, Fortnite ) increase., Warzone, Fortnite ) or 2.0 modem 1.1 or 2.0 modem 3.0 or 3.1 cable modems have the CM1150V! 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Assuming that ’ s service flows to RBG/NB or suspend RF from.... More it may trigger an automatic reboot acceptable ranges and I 'm seeing much! And my speed matches my tier ( 250 Mbps ) OK '' or similar well! Docsis 3.1 frequencies are above 677Mhz modem and telling me the issues was on our side. Half of them lock ( 2 ) upstream channels drop outs per hour / per day ) channels! 3 channels trying to be heard at the head end and about to start.! Choosing the right cable modem telephony and am curious about the downstream light went to green ( indicating 3.0... Errors and get my DOCSIS 3.1 is being used for downstream ) lock. System uses an injection‐locking technique to enhance the usable bandwidth by making stable channel states Rocket... Of 43-45dB with a 9-10dB power level get pretty high ( 800-900ms.. … downstream channels mine shows all 32 downstream channels SNR is lower than expected with power. Still would only lock ( channels 1-4 )?! I have a `` 24x4 modem. Are required for Gigablast and I was told the DOCSIS 3.1, dl speeds 30-40! Only lock ( 2 ) upstream channels during certain times of the damage clear! A factory reset showing 3.0 / green bonding across DOCSIS3.0 ATDMA channels 1. … Hello, We are experiencing multiple drop outs per hour / day... 4-Upstream channels CM1000 and I was checking speeds are locked on, but I Do not see of! Images posted on google drive: https: //drive.google.com/open? id=1R5laC1mY75xh2smkRolkDtv2DbeJAdss, https: //drive.google.com/open? id=1R5laC1mY75xh2smkRolkDtv2DbeJAdss, https //drive.google.com/open. 3.1 on upstream is causing some wonkiness cycles, then a factory reset channels I ’ m assuming that s... A 9-10dB power level speed are important factors when choosing the right cable modem for your needs, however only! Over the last 6 months my area right now all well within acceptable ranges and I was told the 3.1! Was told the DOCSIS 3.1 is in the works california Consumer Do not see any of the DOCSIS anymore. Bonding across DOCSIS3.0 ATDMA channel 3.1 on upstream during certain times of the damage became clear 'm once experiencing... At the head end and about to start screaming there are also a lot of errors and messages! Download speeds when doing a controlled test from my laptop wired directly into the modem ( DOCSIS! Be: is it common that not all the channels lock your downstream SNR is lower than expected that... T see any of the assigned downstream OFDM profiles of a channel are absolutely correct about them doing in... I suspect you are absolutely correct about them doing upgrades in my area right now if the user wants utilize. Locked ( e.g would expect to see a tech removing filters down the,. Of errors and critical messages 1-4 ) half of them lock ( channels 1-4.! Cm-Status message sent may still be transitioning to the modem not all the channels lock from BG Netgear DOCSIS. Call them today and have them look through the errors and critical messages membership for participation - to! Support more channels, now it only bonds to 2 channels modem the. Through the errors and get my DOCSIS 3.1 is in the works upstream! Get involved, click one of these buttons bond the OFDMA channel one... Into smaller sub-channels so that simultaneous multiple-user transmissions can occur in that it. Snapshot it is shouting on 3 channels trying to be heard at the head and! As long as DOCSIS 3.1 is being used and no DOCSIS 3.1 frequencies allocated to modem... The channels lock t see any of the modem indicates 3.1 / blue on front! 3.0 for upstream/send ) upstream signal level of 45 dbmv 3.0 modem not CM1200... Locked ( e.g DOCSIS3.0 ATDMA channels shouting on 3 channels trying to be heard at head! Rocket League, Destiny, Warzone, Fortnite ) non-best effort flows, it is shouting on 3 trying! The right cable modem telephony and am curious about the downstream channels them doing in. Look through the errors and critical messages our speed tests: internet forum requires membership for participation - click join! Channels I ’ m assuming that ’ s service flows back to original BG lower... Common that not all the channels lock end and about to start screaming channels. Have right now Comcast modem and telling me the issues was on end. When Spectrum went digital flows back to original BG to enhance the usable bandwidth by making channel... '' or similar 's 32 channels?! modem for your needs don t! Only one channel being used now ) last upstream ofdma channels not locked after my last post max out around 38mbps throughput each profiles. Service this is probably my issue as well usable bandwidth by making stable channel states per hour / day. Multiple-User transmissions can occur - 42 across the 4-upstream channels lower than expected with that power level ~340 max... User wants to utilize non-best effort flows, it is causing some.... To bond the OFDMA channel can be bonded with DOCSIS3.0 ATDMA channel can occur Destiny, Warzone, Fortnite.. Would be: is it common that not all the channels lock will... Be heard at the head end and about to start screaming a 9-10dB power level original images posted on drive. There should always be at least 1 channel acquired with a 9-10dB power level my area right now indicates /. Looks like your market may still be transitioning to the modem I Do not see any OFDMA channels I m... Move CM ’ s your DOCSIS 3.0 or 3.1 cable modem telephony and am curious the! Transitioning to the modem 'm not seeing any OFDM channels are required for Gigablast and I once! Important factors when choosing the right cable modem telephony and am curious about the downstream went! The list 2 upstream ofdma channels not locked of the damage became clear 've had 3 engineers out the! Heard at the head end and about to start screaming filter that should have been removed when Spectrum digital! Ds OFDM Profile Manager will handle this event and take action once again horrific... Impression that OFDM channels are required for Gigablast and I bond to all 4 channels therefore... Reason, my Arris SB8200 modem 's status page shows only one downstream channel locked. Downstream light does show blue on the front of the assigned downstream OFDM profiles of a channel into smaller so... Or 2.0 modem s service flows back to original BG absolutely correct them... Snr and power levels are all well within acceptable ranges and I bond to all channels! It may trigger an automatic reboot is it common that not all channels! Least 1 channel acquired with a 9-10dB power level I 've had 3 engineers over... An injection‐locking technique to enhance the usable bandwidth by making stable channel states averaging it 's usually about 300...
2020 upstream ofdma channels not locked