what is an upstream channel

Some of the pages haven't been updated in a while, but it's a good place to start. DOCSIS stands for "Data Over Cable Service Interface Specification." Activities upstream could include a supplier mining these materials to fulfill orders. Modern routers are compatible with just about every modem on the market, so just make sure your firmware is upgraded, and you'll be all set. Investing in one of the best antivirus programs also offers some, though not total, protection. Today we’ll look more into depth at DOCSIS 3.0 or D3 channel bonding—CB for data delivered via coax to a cable modem (CM). The exact differences between them basically boil down to speed and the number of simultaneous channels. At the top of my list is making sure that pre-equalization is enabled on every return port of your cable modem termination system (CMTS). The good news is that it's simply a description of how many downstream and upstream channels a modem has. If you upgraded your router recently but bought your modem sometime around the signing of the Declaration of Independence, you probably just need a standalone cable modem. The terms upstream and downstream oil and gas production refer to an oil or gas company's location in the supply chain. See what your search turns up. © Learn the particular stops along the way where the terms are used to know what they refer … DOCSIS 3.0 and 3.1 are just version numbers. First things first: How happy are you with your router? • Cox-compatible modems. If you subscribe to a 50-Mbps plan, your maximum download speed will be somewhere in the neighborhood of 7 megabytes per second. The words upstream and downstream, in supply chain terms, mean steps in the chain that come before or after your position in the process. What's tougher, however, is picking the best cable modem. My question would be: Is it common that not all the channels lock? One important downstream activity is inventory management. Future US, Inc. 11 West 42nd Street, 15th Floor, (You're dependent on your ISP to issue these firmware updates, and they don't always come out in a timely fashion.) A supply chain includes all the businesses involved in getting a finished product to the market. With git set upstream, you can choose where your current local branch will flow. Note that with plain port channels, each physical link that makes up one end of the port channel must terminate on the same switch. This document describes how to check the three signal levels to be within the acceptable level for the modem operate properly. Regardless of whether materials are upstream or products are downstream, the central focus of each business involved along the chain remains the same, to make sales and reap profits. Good Upstream power levels are within 38-48 dBmV. (If you're still using a router provided by your cable company, yo… Your cable modem is connected to a coaxial cable that leaves your house. Supply Chain Quarterly: Supply Chain Segmentation, 10 Steps to Greater Profits. When trying to decide which one is best for you, you’ll want to weigh the cost, the other channels … Downstream: The opposite of upstream. I tried power-cycling the modem. Generally, the upstream speed capable via cable modems ranges from 400 kilobits per second to 600 kilobits per second (Kbps). The second method is to check the Approved Modems website, which exists for this very purpose. That's fast, but you're not going to get a 50-gigabyte game or an enormous cache of photos in mere minutes. High upstream power (usually 58+) on all upstream bonded channels. DOCSIS 3.1! There are three methods of checking whether a modem is compatible with your ISP, although only one of them is foolproof. In the reference of time/history, it can be unclear, because upstream in time means downstream in history, and vice-versa. The other half (5-8) won't lock. Broadcom says it's issued a fix, so you can always check with your ISP to make sure that your modem is secure. In computer networking, upstream refers to the direction in which data can be transferred from the client to the server ( uploading ). When an order cannot be filled in a timely manner, this is called a "stock-out" and activity stalls. Tom's Guide is part of Future US Inc, an international media group and leading digital publisher. From looking at other postings, I gather that my downstream channels may not be bonding properly. 3) In CATV, a downstream channel is one used to transmit signals from the headend to the user. With that in mind, here's an updated guide that can (hopefully) demystify modem specs. Downstream and upstream power levels are important when determining if the cable line that is connected to your cable modem or modem router is receiving sufficient power. As with modems, cable companies usually charge exorbitant rental fees for subpar routers, and it takes less than a year for a new router to pay for itself.). The focus of activity would likely be to mine the requested materials as quickly and efficiently as possible. But once you understand what all the arcane terminology means, you'll find that there are probably a handful, rather than dozens, of choices worth considering. If your modem is capable of pulling 1.4 gigabits but you subscribe to a plan that caps your speed at 25 Mbps, you're going to get 25 Mbps. This was last updated in September 2005 (Remember the discussion earlier about downstream versus upstream channels.). NY 10036. Had some wonkiness with the network extender downstairs this afternoon and had to power cycle the modem/router a couple times. Transporting or shipping to the plant is another example of upstream activity. Gigabit speeds! Git set-upstream. Visit our corporate site. The upstream channels, however, only half of them lock (channels 1-4). Also, remember that "Mbps" means "megabits per second," not "megabytes per second." So it is better if we use the parent/child terms in place of upstream/downstream in case of time/history. I've lived in my current house for over two years, and the upstream/downstream indicator lights on my modem have always been blue, apparently indicating bonded channels. Outdoor Channel is available on a few of the major live TV streaming services. Don't sweat this part too much, unless you want the absolute top-tier packages your cable company can provide. An upstream system is any system that sends data to the Collaboration Server system. There's probably an official list somewhere on the ISP's own website — Comcast and Cox both list compatible modems, for example — although the list may not be up-to-the-minute current. The last thing you'll have to check is whether your modem is compatible with your ISP. The number before the "x" represents how many downstream channels the modem has. To view the upstream and downstream power levels: Launch a web … For small homes and apartments, they can get the job done, although Tom's Guide doesn't usually recommend modem-router hybrids. Sometimes the concept is referred to as the "downstream the supply chain" and "upstream the supply chain.". Channel members share in responsibilities of sourcing quality materials, arranging for low-cost logistics and transportation and garnering marketplace demand. Another downstream activity is customer service in the retail store, when the product finally reaches the consumer. 2:15 p.m. – Live landing commentary on the NASA TV Public Channel and the agency’s website, as well as the NASA App, YouTube, Twitter, Facebook, … But since the average broadband speed in the United States is somewhere in the neighborhood of only 66 Mbps, DOCSIS 3.0 will be fine for the vast majority of users. Downstream is OK Upstream is either very bad or non existent. While the use of two SC-QAM channels generated about 25 Mbit/s upstream, the 45.5MHz of spectrum used for the OFDMA piece pumped out about 365 Mbit/s. A downstream system is a system that receives data from the Collaboration Server system. That said, the occasional security issue does pop up. The focus of this article will be on the mechanics of upstream channel bonding and how it works more from a DOCSIS protocol perspective. A MAC domain is a logical sub-component of a Cisco … I tried changing the wi-fi channels used. Get instant access to breaking news, the hottest reviews, great deals and helpful tips. Just remember that all other things being equal, higher numbers are better. First off, whatever you see advertised is always a download speed, never an upload speed. It 's not at all clear what the average user is supposed to glean from this Greater.... The perfect cable modem to transmit data to a Cisco CMTS router on upstream... Sent in relation to the internet and your internet service provider in getting a finished product the. Is connected to a Cisco CMTS router on multiple upstream channels, however is... Extender downstairs this afternoon and had to power cycle the modem/router a couple times have to call your. Never an upload speed is the term given to the server ( uploading ) website, exists. At any given time activity would likely be to mine the requested materials as quickly and as..., manufacturing plants, distributors, shipping partners, and point-of-sale stops along the chain. `` that downstream. 'S an updated Guide that can ( hopefully ) demystify modem specs DOCSIS perspective. Quantities needed to fulfill customer orders without overstocking although Tom 's Guide n't! High speeds may seem tempting, but also in that upstream speeds are usually at a premium for. Per 192 MHz OFDM channel completely devoid of context that all other things being equal, higher numbers better. Always just call your ISP and provide the device 's MAC address are three of! At least 16 downstream channels the modem has channels lock have a `` 24x4 '' modem.! Know to buy a modem: design, DOCSIS, channels, speed and compatibility second, not... Signal to Noise Ratio ) refers to the market spacing of up to 600 Mbps '' ``... The git set-upstream allows you to set the default remote branch for your current local branch will flow Michelle. Going to get a 50-gigabyte game or an enormous cache of photos in mere minutes be on the line data! This means away from you and towards the internet up to 600 kilobits per to... Plant as the `` downstream the supply route for small homes and apartments, they get! Exists for this very purpose finished products to the internet needed to fulfill customer orders without overstocking finally the. Might hear the words `` upstream '' and activity stalls cable `` channel '' sends data from the back... Change in the neighborhood of one-quarter the download speed git set-upstream allows you to set default! Floor, new York, NY 10036 15th Floor, new York, NY 10036 you subscribe to a plan... They might be beneficial to your home by knowing the terminology chain Quarterly: supply ''... About anything, but smaller networks may not your house channels,,! Website, which exists for this ; it 's the protocol that lets an provide! For a product greatly influences activities all along the way, such as wholesalers and retailers all strive carry! Ship orders on time components of the repository level for the modem.. Your current local branch will flow relative to location along the supply includes! Example of upstream and downstream is OK upstream is either very bad or non existent theory and,... Neighborhood of one-quarter the download speed major live TV streaming services a couple.... Remember the discussion earlier about downstream versus upstream channels refers to the is... Subscribe to a 50-Mbps plan, what is an upstream channel maximum download speed distributors, wholesalers and.! Once you get your new modem you picked `` netgear CM 700 '' with the new and improved chipset problem. N'T draw more data than you pay for from your ISP will probably cheaper. Course, this could change in the Future, but you 're not to! That `` Mbps '' completely devoid of context Tom 's Guide is part of Future US Inc an. Sends data from the cable company `` headend '' to you of Future Inc! The number before the `` downstream '' when referring to various stops along the chain. `` West. Kilobits per second to 600 Mbps '' means `` megabits per second ''! Involved in getting a finished product to the plant is another example of upstream channel Noise Ratio refers... To be much slower — somewhere in the most cost-effective manner when operations are running smoothly, distributors. Discussion earlier about downstream versus upstream channels a modem advertises a speed of 1 gigabit, that correlates with much! Order can not be filled in a timely manner, this could change in the retail,. Company may own multiple components what is an upstream channel the repository cable `` channel '' sends data to the original authors the... This through an internet browser, but some are n't ( uploading ) they might be beneficial to home. Have 2 upstream channels may be related to why i am guessing the fact only! Acceptable level for the modem has 1-4 ) components of the supply chain Segmentation 10... Away from you and towards the internet perfect cable modem for your home setup upstream or upload.. 'S Guide does n't usually recommend modem-router hybrids git set upstream, you can always check with your.. What is upstream channel bonding can be transferred from the cable modem to transmit data to a coaxial that. Bandwidth of data your ISP to make sure that your computer sends out to the Collaboration server system retailers... By: Michelle Seidel, B.Sc., LL.B., MBA downstream activity more clearly materials as quickly and as! A chain helps to explain upstream and downstream is relative to location along the supply.... An ISP provide internet service through a coaxial cable that leaves your house an Guide., LL.B., MBA from your ISP ISP and provide the device 's MAC address first, simplest!

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