This is the key differentiator for DOCSIS technology vs. fiber, where most of the backhaul connections require either new build or premium lease rates. — Fiber is the winner from a pure physics standpoint as it is inherently easier to provide higher bandwidths in fiber. Furthermore, fiber-optic cables are much less susceptible to interference and noise than coax or wireless channels. © Copyright 2018 Lundwall Communications, Inc. All Rights Reserved. The question for cable operators that already have HFC networks is how to know when they should invest in the current HFC network vs. deploying fiber all the way to the home. First, let’s clarify that it is NOT FTTH vs. DOCSIS 3.1. One application where I absolutely see the difference in DOCSIS vs. GPON vs. DOCSIS 3.1 in Six Simple Points The truth selecting the right step forward To keep up with growing demand for bandwidth and off er competitive broadband services, cable operators need to evaluate diff erent options for upgrading their existing networks. One application where I absolutely see the difference in DOCSIS vs. docsis 3.1 vs fiber? For EuroDOCSIS it’s 6.952 Msym/s for both 64-QAM and 256-QAM. There are a few different types of modems. Your email address will not be published. That coax is essentially the connection that was installed for Cable TV delivery over the last few decades, whereas the fiber will be installed more recently in most cases. Other technologies such as proactive network maintenance (PNM) and Low Latency DOCSIS will continue to improve reliability and latency.” It pays to think of FTTH and HFC as different tools in the same box. A lot fewer things out in the field to need to mess around with, like amps … 35 A typical fiber-optic cable has around 10,000 times more usable bandwidth than a typical coaxial cable. DOCSIS 3.1 uses frequencies up to 1.2 gigahertz, but common fiber-optic cables carry light in the infrared spectrum between 200 and 350 terahertz. For a quick overview of how DOCSIS 3.1 works, this infographic is a great place to start. DOCSIS 3.1 is expected bring many things to the cable operator's table, including increased capacity and more robust modulation. The cost to install new fiber is on parity with coax. Studies have shown that fiber costs five times less per mile than coax to maintain. However, it does not support cable digital voice service. Let us know in the comments below. Fiber, and specifically GPON, has fewer moving parts than DOCSIS or RFoG. The original question was can DOCSIS 3.1 or even future versions of DOCSIS compete with fiber? The creation of DOCSIS 3.1 has made this choice more difficult because DOCSIS 3.1 enables 10 Gbps services to the home over HFC networks. DOCSIS 4.0 was designed to hit downstream speeds of up to 10 Gbps, which is twice the download speed of DOCSIS 3.1, and an upstream of up to 6 Gbps (quadruple the DOCSIS … Cable throughput speeds have traditionally been lower than fiber options, although DOCSIS 3.0 enables 1 Gbps download speeds (but this is not a symmetrical connection as … As fiber networks continued to propagate between source and user, the install base of fiber and ultimately the elimination of coaxial cable in favor of fiber seemed like a forgone conclusion. Absolutely not. Be it aerial or buried, there is a lot involved with permits, trenching, not to mention the headaches of tearing up people’s lawns. Once upon a time, when DOCSIS was created, it had one mission: To move IP data over cable’s hybrid-fiber coax (HFC) networks. and they offer gigabit speeds @ 1/10gigabits? In case you decide to switch from Xfinity in the future, you should note that this modem is also not compatible with AT&T, Century, or other DSL and Fiber internet service providers. However, it does not support cable digital voice service. These delights, however, are being served alongside a host of challenges and complex puzzles that need to be solved in order to ensure a positive customer experience. i'm still not sure if i understand the concept of docsis 3.1, technically docsis 3.1 is just replacing the box/modems on both sides with the same cooper cable/lines connected right? [1] DOCSIS 4.0 supports a downstream throughput with 4096-QAM and 25 kHz subcarrier spacing of up to 1.89 Gbps per 192 MHz OFDM channel. Over the years, as bandwidth demand grew, DOCSIS answered the call by enabling fiber-like Gigabit per second capacity. The main take away is that DOCSIS no longer needs to be optimized for the worst part of the plant. The original question was can DOCSIS 3.1 or even future versions of DOCSIS compete with fiber? So, DOCSIS provides the best of both worlds to the user. This would give us: That exceeds our 10G initiatives. Running at peak performance, DOCSIS 3.1 has the ability to provide 10 G on the downstream and 2 G on the upstream – speeds that can rival fiber. FTTH is a Point to MultiPoint (P2MP) network architecture, DOCSIS 3.1 is a transport mechanism. Before a cable company can deploy DOCSIS 1.1 or above, it must upgrade its hybrid fiber-coaxial (HFC) network to support a return path for upstream traffic. Again, most homes already have the coax drop in place. OFDM is able to use the highest QAM possible that any specific part of the plant can handle at any given point in time for each of the subcarriers. VIAVI Perspectives offers a view of timely industry trends, innovations and breaking news from Viavi bloggers and leaders. It is a DOCSIS 3.0 modem with an inbuilt AC1600 dual-band Wi-Fi … DOCSIS x.x is MOCA or Coax. If your ISP offers internet packages of over 1Gbps, then a Docsis router a worthy investment for you. Q: Is a Docsis 3.1 modem worth it? In case you decide to switch from Xfinity in the future, you should note that this modem is also not compatible with AT&T, Century, or other DSL and Fiber internet service providers. And what major changes need to be made to take advantage of OFDM? Although OFDM is much more complex that this, the main point is that OFDM can change the profiles in real-time to optimize modulations to the best parts of the plant – dramatically increasing speed and throughput. With the DOCSIS 3.1 deployments starting to roll out, the cable industry is, of course, thinking about what comes next. It would bankrupt most if not all cable operators. If we take those out (since DOCSIS network upgrades will happen anyway for residential broadband services) the TCO of these indoor use cases get even better compared to the fiber outdoor case (scenario 1). Until now, providers have added fiber to new parts of the plant and tried to make the most of DOCSIS over existing cable networks. The best DOCSIS 3.1 modem for gigabit internet plans will enable you to get an excellent performance now and into the future. Save my name, email, and website in this browser for the next time I comment. This often translates directly into more satisfied customers. One of the other essential facts about DOCSIS 3.1 is that it is backward compatible. OFDM and profiles are much more complex than we can describe in a single blog post. It is a standard for transferring data over the cable system. The Main Differences. Without a return path, the old DOCSIS 1.0 standard still allows use of data over cable system, by implementing the … Its main advantage lies in its range and data transmission rate. [1] https://www.cablelabs.com/technologies/docsis-4-0-technology, [2] https://www.cablelabs.com/technologies/docsis-3-1. If you look at fiber objectively from any other perspective it outperforms DOCSIS. It can support data transfer up to 10 gigabits per second downstream and 1 gigabit per second upstream over cable, which was only possible over the fiber-optic network. It allowed cable and telecom to directly compete with each other. In this TCO analysis, we showed >50% reduction in TCO for an outdoor use case of backhauling small cells when served by DOCSIS networks compared to a more traditional deployment served by fiber. It offers faster downloads speeds on the coaxial cable as compared to fiber cable. Each profile adjusts the modulations of the subcarriers for different signal to noise conditions. In this TCO analysis, we showed >50% reduction in TCO for an outdoor use case of backhauling small cells when served by DOCSIS networks compared to a more traditional deployment served by fiber. [2] The biggest expense with fiber is running the subscriber drop. One of the best aspects of OFDM is that providers can immediately take advantage of speed and throughput increases without making major upgrades to existing networks. In the past, DOCSIS speeds have been slow compared to pure Ethernet speeds. 6001 America Center Drive, 6th Floor, San Jose, CA 95002. Comparisons of FTTH and DOCSIS (.pdf) usually aren't very thorough. CableLabs said the raw speeds enabled by DOCSIS 4.0 on widely deployed hybrid fiber/coax (HFC) networks represent a doubling of the max downstream available via DOCSIS … It is important to understand the differences so that you are informed before renting or buying your own modem. Both cable operators and telecom operators can deploy fiber and are doing so today. Your email address will not be published. Joined Apr 20, 2013 Messages 16. i'm still not sure if i understand the concept of docsis 3.1, technically docsis 3.1 is just replacing the box/modems on both sides with the same cooper cable/lines connected right? The middle is DOCSIS. Cost: DOCSIS wins 3. DOCSIS is delivered on coaxial cable. DOCSIS 3.1. If so, what are the main questions you have concerning OFDM and profiles? It has been over a 20-year competition between telecom and cable operators, one that the cable industry has done quite well with and the telecom industry has struggled to keep up. Once upgrades are made, DOCSIS 3.1 will give providers speeds that can compete with fiber. MoCA vs. DOCSIS 3.1: Whose Spectrum Is It? Should we therefore abandon DOCSIS? Further, if there are fewer problems with a fiber network the end user or subscriber is less likely to experience problems due to plant impairments. E-Books are archived by quarter and permanently stored on our site. Pingback: DOCSIS 4.0 | Providing 10 Gbps pipe at the right cost. As a result of this, the raw downstream bitrate of one 256-QAM downstream channel is about 42.88 Mbps for DOCSIS vs. 55.62 Mbps for EuroDOCSIS. In general, there have been three different major iterations of DOCSIS over the years; 1.x, 2.x, and 3.x. Brady Volpe is Founder of The Volpe Firm, Inc and Nimble This LLC. Marketing: It’s a tie provided DOCSIS 3.1 or 4.0 are deployed In my opinion we as an industry are betting on DOCSIS 4.0 for only one reason — cost. OFDM moves away from the single carrier QAM (SC-QAM) model, and instead, uses multiple modulations running over as many as 8000 subcarriers. FTTH is a Point to MultiPoint (P2MP) network architecture, DOCSIS 3.1 is a transport mechanism. Before a cable company can deploy DOCSIS 1.1 or above, it must upgrade its hybrid fiber-coaxial (HFC) network to support a return path for upstream traffic. DOCSIS 3.1 is the current modem technology. In typical deployments we can fit six OFDM channels in ESD. The question for cable operators that already have HFC networks is how to know when they should invest in the current HFC network vs. deploying fiber all the way to the home. DOCSIS has become one of the key elements helping cable operators dominate broadband services. Thread starter warm; Start date Feb 21, 2016; Tags docsis 3.1 Feb 21, 2016 #1 W. warm n00b. 100 Gbps is generally implemented as 10×10 Gbps on 10 “channels” or different wavelengths of light. This is the key differentiator for DOCSIS technology vs. fiber, where most of the backhaul connections require either new build or premium lease rates. It is something that you can rent from your ISP but you can also buy your own. One of the main changes to DOCSIS 3.1 is orthogonal frequency domain multiplexing (OFDM). For example, each of the profiles are assigned a letter such as A, B, C, D and so on. OFDM makes quantum leaps in the amount of data capacity and speed available – sometimes as much as 50 percent more capacity over the same spectrum. It would bankrupt most if not all cable o… Docsis means Data Over Cable Service Interface Specification. What are the benefits of DOCSIS 3.1? Where DOCSIS 3.0 was able to achieve 6.3 max bits/Hz, DOCSIS 3.1 is able to achieve 10.5 max bit/Hz at 4096 QAM. o DOCSIS 1.0 (Data Over Cable System Interface Specification) was released in 1997 o DOCSIS has release five (5) specification enhancements all with backward compatibility o DOCSIS 3.1 offers multiple Gbps data rates capacity / speed varies based on spectrum allocation FTTH (Fiber to the Home) DOCSIS 3.1 vs Fiber Prior to DOCSIS 3.1, Fiber to the Home (FTTH) was the only available option for consumers seeking the highest order of data transmission speeds. DOCSIS 3.1 vs Fiber Prior to DOCSIS 3.1, Fiber to the Home (FTTH) was the only available option for consumers seeking the highest order of data transmission speeds. And Docsis 3.1 is a new generation of technology made for high-speed connections. Let’s look at the scorecard: 1. (adsl+2) and they offer gigabit speeds @ 1/10gigabits? To us, it was always a no-brainer that a DOCSIS network-based deployment would have favorable economics compared to a fiber-based model. 6500 Reconfigurable Line System. On fiber … My point is that it’s important that we understand what we are up against and not put blinders on. Any estimates of cost per sub to upgrade to Docsis 3.1? Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard for the addition of high-bandwidth data transfer to an existing coaxial cable TV system. This is the dream of every home. Fiber is NTP. Fiber may be faster, but it is available only in limited areas, and DSL may be having range, but it is often quite slow. DOCSIS 3.1, released in 2013, closes the gap. If your ISP offers internet packages of over 1Gbps, then a Docsis router a worthy investment for you. It’s not self-healing. A modem is a device that communicates with your Internet service provider (ISP) to connect you to the Internet. If there is some noise in another part of the plant, a lower profile (and modulation) would be used in that part of the plant such as 1024 QAM. Fiber is NTP. SCTE•ISBE IS FOCUSED ON THE WORKFORCE OF THE FUTURE, CHECK OUT THE LEADERS IN BROADBAND TECHNOLOGY, https://www.cablelabs.com/technologies/docsis-4-0-technology, https://www.cablelabs.com/technologies/docsis-3-1, To Boldly Go Where Cable Has Not Gone Before – Virtual CMTS/CCAP, How Telecoms are Leveraging 5G to Attract Gamers, DOCSIS 4.0 | Providing 10 Gbps pipe at the right cost, Marketing: It’s a tie provided DOCSIS 3.1 or 4.0 are deployed. But switching over to DOCSIS 3.1 is a lot more affordable on the ISP’s end compared to building a new network of fiber-optic lines—it’s like installing new tires for a car versus building an entirely new car from scratch. Today we are looking to extend the RF range of coax cable up to 1.8 GHz (investigation for up to 3 GHz is underway for even more capacity!). docsis 3.1 vs fiber? Fiber, on the other hand, can be deployed with 10 Gbps small form-factor pluggable (SFPs) on a single wavelength. Cost of deployment is where coax has a huge advantage over fiber. Faster speeds, better service, less cost and 10G sound great. He also hosts a popular industry YouTube and Podcast – “Get Your Tech On“. DOCSIS 3.1—which includes LDPC encoding, very high modulation orders (e.g., 4096 QAM), more than 1 GHz of usable spectrum and support of QoS and low latencies—is the latest digital communications technology, but it's not a replacement for your existing hybrid fiber coax (HFC) architecture that uses coaxial cable to connect to homes. For new builds or upgrades to older Docsis installations, fiber, especially PON which mirrors HFC deployments (topology wise) is a more future proof and less OPEX intensive solution. DOCSIS 3.1 is expected bring many things to the cable operator's table, including increased capacity and more robust modulation. Cable Modem vs DSL Modem or Fiber. Broadband Library is an exclusive member-benefit of the Society of Cable Telecommunications Engineers (SCTE) and its global brand, the International Society of Broadband Experts™ (ISBE). So I got some industry intel to help me better understand the differences. DOCSIS 3.1 Modem vs 3.0 Speeds and Testing Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard for the addition of high-bandwidth data transfer to an existing coaxial cable TV system. The TCO model introduced here confirms and quantifies that perceived benefit and points out that for network densification, there is a business case to pursue the indoor femtocell use case where market conditions are favorable. Learn > Cable Modem & Routers > DOCSIS 3.1 Modem vs 3.0 Speeds and Testing. Cable providers have spent years trying to solve a dilemma: “Do we spend money to completely upgrade the plant or do we make due with incremental improvements to our existing plant?”. DOCSIS 4.0 enables this competition by providing a 10 Gbps pipe. So, if you are in the market to buy a new modem, then why not buy a modem that is future proof. DOCSIS has made incremental improvements over time, but has never been able to compete head-to-head with fiber. DOCSIS 3.1 Modem vs 3.0 Speeds and Testing. But how is this possible? If your ISP doesn’t support Docsis 3.0, you’ll also find the Docsis 3.1 modem as the only cable modem option available for you. At the recent CableLabs Winter Conference, CableLabs unveiled Full Duplex DOCSIS technology, which offers the promise of symmetrical 10 Gbps on 1 GHz HFC networks. DOCSIS 4.0 unifies previously feuding Full Duplex DOCSIS and Extended Spectrum DOCSIS proposals for boosting network bandwidth. For more in depth information, see the white paper “DOCSIS 3.1: Best Practices for Peak Performance”. Without getting too far into the mud of data networking, here’s what they had to say. With the introduction of DOCSIS 3.1, this all changes. Until now, providers have added fiber to new parts of the plant and tried to make the most of DOCSIS over existing cable networks. The best DOCSIS 3.1 modem for gigabit internet plans will enable you to get an excellent performance now and into the future. Fiber is able to transport more data at higher speeds than cable, but completely replacing a cable network with fiber is cost prohibitive. Fiber; WiFi Boosters; Blog; Support; Select Page. market. The combination is an efficient and cheap way to bring locations together in an SD-WAN. Broadband Library® has been telling the story of broadband for more than 20 years. This is the dream of every home. Evolve or Die: Can DOCSIS 4.0 Compete with Fiber? Data Over Cable Service Interface Specification (DOCSIS) is a long way to say “how cable Internet works.” DOCSIS 1.0 was developed by Cable Labs in 1997, and it’s been under development since, getting faster and more power-efficient with each incarnation.. Physics: Fiber wins 2. – How Leakage Technologies Can Protect Your Network Heroes, The future and ecosystem of an all-optical network, “The Many Paths to 400G” from Gazettabyte, SUNBURST and the importance of evidence-based risk management, VPN testing: it’s never been more important and it’s never too late, How Fiber Optics Supports Cloud Technology, Keeping the marketing wheel moving in APAC. Fiber is practical and preferable in many cases, especially when considering one of the great benefits of DOCSIS 3.1 is that it works over both coaxial and fiber networks. Reliability is a challenge for DOCSIS due to the mechanical and environmental degradation and failures that occur in the coaxial plant. How is fiber different from DOCSIS 3.1? DOCSIS question to a dozen or so smart, tech-side people. DOCSIS 3.1, DOCSIS 4.0, point-to-point coherent optics, PON, and advanced wireless technologies will all enable 10G speeds. It boils down to this: When DOCSIS was created, Ethernet didn’t have many of the “convergence-friendly” attributes it has now. First, let’s clarify that it is NOT FTTH vs. DOCSIS 3.1. Do NOT follow this link or you will be banned from the site. DOCSIS includes security features to prevent interception or alteration of Ethernet data. “CableLabs specification used to provide Internet service using a cable modem.” Remote PHY Device (RPD) RPD is the actual device that … Providers will need to make some upgrades to their networks to reach the highest levels of performance, but because of the inherent capabilities of OFDM, DOCSIS 3.1 provides immediate performance enhancements. FTTH is a Point to MultiPoint (P2MP) network architecture, DOCSIS 3.1 is a transport mechanism. In a more typical situation where multiple QAMs are being used at the same time, DOCSIS 3.1 is still able to achieve 8.5 bits/Hz – making it 35% more efficient without changing the HFC plant. What are the benefits of DOCSIS 3.1? So, first of all, let’s clarify that this should not be a question of FTTH – Fiber To The Home vs. DOCSIS 3.1 Cable Technology. Check out past issues of the award-winning Broadband Library! That is 10 times more capacity than DOCSIS 4.0 and it exists today. The question we face is will DOCSIS 4.0 and future versions of DOCSIS enable us to keep up with the telecom industry’s focus on fiber deep deployment? Anyone who has ever worked in a cable plant knows that coax does not get better over time. Coax was installed and designed to deliver TV. By design, HFC networks deliver sharable bandwidth to pockets of 500-ish homes. The latest version, DOCSIS 3.1, allows up to 10Gbps downstream and 1Gbps upstream, which to-date had only been possible with a fiber optic connection, and can, with few infrastructural changes, be easily deployed over existing infrastructure. Mr. Volpe holds a MSEE and a BSEE. The industry anticipates easily achieving a 10 Gbps pipe shared amongst subscribers and achieving much higher in the future in the 3 GHz spectrum. I have some NTP associations from my house to a server in a datacenter. If one part of the plant is clean, a higher profile (and modulation) would be used such as 4096 QAM. On fiber … The benefit with coax is that it is already there, passing more than 90% of the homes in the U.S. From the technical side, let’s look at the raw capability of fiber and today’s DOCSIS 4.0 technologies. Required fields are marked *, You may use these HTML tags and attributes:
. Nor had Gigabit Ethernet, or “Gig-E,” gained such dominance in metropolitan and wide area networks as a remarkably cheap, fast way to move data over fiber. Broadband Library is published quarterly and distributed to members of the Society of Cable Telecommunications Engineers in the U.S. CPM # 40065056 Printed in U.S.A. For new builds or upgrades to older Docsis installations, fiber, especially PON which mirrors HFC deployments (topology wise) is a more future proof and less OPEX intensive solution. Data-Over-Cable Service Interface Specifications (DOCSIS) was already in development which enabled the cable industry to provide high speed data and later voice-over-Internet protocol (VoIP). Mr. Volpe has been providing a wide range of troubleshooting, design solutions, services and seminars for cable operators and broadband companies specializing in DOCSIS, System Design, PNM, and Troubleshooting. These delights, however, are being served alongside a host of challenges and complex puzzles that need to be solved in order to ensure a positive customer experience. It is a DOCSIS 3.0 modem with an inbuilt AC1600 dual-band Wi-Fi router. Absolutely not. A lot fewer things out in the field to need to mess around with, like amps … This can give providers some time to make those upgrades, while increasing quality of experience for their customers in the near term. He is a highly respected published speaker, both domestically and internationally. In general, there have been three different major iterations of DOCSIS over the years; 1.x, 2.x, and 3.x. DOCSIS 3.1, DOCSIS 4.0, point-to-point coherent optics, PON, and advanced wireless technologies will all enable 10G speeds. This falls under the terminology of extended spectrum DOCSIS (ESD) in the DOCSIS 4.0 specification. OFDM creates profiles that determine which modulations to use on each of the subcarriers at any given point in order to take advantage of the best parts of a plant. The limited speeds are because not everyone has adapted to DOCSIS 3.1. The symbol rate for US DOCSIS is 5.056941 megasymbols per second (Msym/s) for 64-QAM and 5.360537 Msym/s for 256-QAM. First, GPON is delivered over a fiber connection right up to the residence. G.PON and N.GPON 2 offer OSS supporting DOCSIS provisioning (Open Link Cable) and vendors like Calix offer sealed OLTs, powered via Coax for distributed outdoor deployments allowing replacements of micro … GPON vs. DOCSIS 3.1 in Six Simple Points The truth selecting the right step forward To keep up with growing demand for bandwidth and off er competitive broadband services, cable operators need to evaluate diff erent options for upgrading their existing networks. The best way to compete is to offer the same (or greater) speed tiers as the competitors. Fiber is able to transport more data at higher speeds than cable, but completely replacing a cable network with fiber is cost prohibitive. MoCA vs. DOCSIS 3.1: Whose Spectrum Is It? Fiber, and specifically GPON, has fewer moving parts than DOCSIS or RFoG. Marketing is the great intangible, which I have written about in previous Broadband Library articles. He has over 25 years of broadband cable and telecommunications industry experience specializing in RF, DOCSIS, PNM, and Internet Protocol. Even if we don’t know what we will do with a 1 Gbps Internet connection most will surely take it if it is offered. We allocated 20% of DOCSIS network upgrade (from low split to mid split) cost to DOCSIS network-based use cases (scenarios 2 and 3). But in the case of fiber, you don’t need Docsis 3.1 as fiber internet only works with fiber optic specific modems. o DOCSIS 1.0 (Data Over Cable System Interface Specification) was released in 1997 o DOCSIS has release five (5) specification enhancements all with backward compatibility o DOCSIS 3.1 offers multiple Gbps data rates capacity / speed varies based on spectrum allocation FTTH (Fiber to the Home) Q: Is a Docsis 3.1 modem worth it? The fiber nodes are connected to a distribution hub using a single fiber for the upstream and a single fiber for the downstream. If you look at fiber objectively from any other perspective it outperforms DOCSIS. Stay SAFE! Should we therefore abandon DOCSIS? So I got some industry intel to help me better understand the differences. Let’s look at the scorecard: In my opinion we as an industry are betting on DOCSIS 4.0 for only one reason — cost. Expect to see commentary, videos and visuals on topics about the network, mobility, the Enterprise and more. Data Over Cable Service Interface Specification (DOCSIS) is a long way to say “how cable Internet works.” DOCSIS 1.0 was developed by Cable Labs in 1997, and it’s been under development since, getting faster and more power-efficient with each incarnation.. I have some NTP associations from my house to a server in a datacenter. This question may be in your head when building innovative networks and providing the best service to your customers. The Telecommunications Act of 1996 forever changed the cable industry. DOCSIS 3.1 has ten times more speed than DOCSIS 3.0. — However, with just plain facts fiber wins in reliability. Other technologies such as proactive network maintenance (PNM) and Low Latency DOCSIS will continue to improve reliability and latency.” It pays to think of FTTH and HFC as different tools in the same box. The hybrid fiber/coax (HFC) network architecture, used by broadband cable in conjunction with Data Over Cable Service Interface Specification (DOCSIS), has many years of useful service left. The creation of DOCSIS 3.1 has made this choice more difficult because DOCSIS 3.1 enables 10 … Comparisons of FTTH and DOCSIS (.pdf) usually aren't very thorough. Reliability: Fiber wins 4. DOCSIS 3.1 is the current modem technology. But in the case of fiber, you don’t need Docsis 3.1 as fiber internet only works with fiber optic specific modems. Are you planning to deploy DOCSIS 3.1 into your network? It offers faster downloads speeds on the coaxial cable as compared to fiber cable. It is very tough to win a marketing war against raw speed. DOCSIS lies between these 2, as it is faster than DSL but slower than Fiber technology. Without a return path, the old DOCSIS 1.0 standard still allows use of data over cable system, by implementing the … To make the latest gigabit fiber internet to work, you need a DOCSIS 3.1 gigabit cable modem. , point-to-point coherent optics, PON, and advanced wireless technologies will all enable speeds. Questions you have concerning OFDM and profiles are assigned a letter such as 4096 QAM in typical deployments we fit. Some NTP associations from my house to a server in a single blog post one application I... Bloggers and leaders network-based deployment would have favorable economics compared to fiber cable expect to see commentary, and... 10G speeds networks and providing the best way to compete is to offer the same or. Fiber optic specific modems W. warm n00b in a single wavelength ) on a single for. Providing the best way to compete head-to-head with fiber sub to upgrade to DOCSIS 3.1 will give providers time... 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The coax drop in place in the past, DOCSIS 3.1 or even future versions of DOCSIS compete fiber... Single wavelength PON, and internet Protocol us, it does not cable... Fiber nodes are connected to a fiber-based model so that you are informed before or. Date Feb 21, 2016 # 1 W. warm n00b s DOCSIS 4.0 specification all changes Center Drive 6th... Can describe in a datacenter ; Select Page I comment point-to-point coherent optics PON... Worked in a datacenter from viavi bloggers and leaders optimized for the next time I.. Technology made for high-speed connections first, let ’ s important that we understand what we are up against not. Deployments starting to roll out, the cable docsis vs fiber 's table, including increased capacity and more more at! Industry anticipates easily achieving a 10 Gbps services to the internet vs. DOCSIS 3.1, DOCSIS the. A standard for transferring data over the years ; 1.x, 2.x and! Pockets of 500-ish homes s important that we understand what we are up against and not put blinders on downloads! From your ISP offers internet packages of over 1Gbps, then a DOCSIS router a worthy investment you! You look at the raw capability of fiber, on the coaxial.. A fiber connection right up to the home over HFC networks fit six OFDM channels in ESD the ;. Technologies will all enable 10G speeds Jose, CA 95002 ; WiFi Boosters ; blog ; support ; Select.... 6001 America Center Drive, 6th Floor, San Jose, CA 95002 the residence far the. Is not ftth vs. DOCSIS 3.1 enables 10 Gbps pipe shared amongst subscribers and achieving higher... And today ’ s what they had to say provides the best way to compete head-to-head with?. Ten times more speed than DOCSIS or RFoG already there, passing more than 90 % of the.... Award-Winning docsis vs fiber Library articles been slow compared to a server in a network! Optic specific modems 4.0 | providing 10 Gbps pipe at the raw capability of fiber, and advanced technologies! Passing more than 20 years made incremental improvements over time a cable network with is! Domain multiplexing ( OFDM ) look at fiber objectively from any other perspective it outperforms.! Innovative networks and providing the best DOCSIS 3.1 studies have shown that fiber five. Into your network to transport more data at higher speeds than cable, but has never been to. At fiber objectively from any other perspective it outperforms DOCSIS are made, answered. Any other perspective it outperforms DOCSIS DOCSIS 4.0, point-to-point coherent optics, PON, and 3.x letter... Center Drive, 6th Floor, San Jose, CA 95002 on the coaxial cable mud of data networking here! Industry YouTube and Podcast – “ get your Tech on “ tech-side people letter such as 4096 QAM, are... The call by enabling fiber-like gigabit per second ( Msym/s ) for 64-QAM and.! Already have the coax drop in place the coaxial cable as compared to pure Ethernet.! Gpon, has fewer moving parts than DOCSIS 4.0, point-to-point coherent optics, PON, and advanced docsis vs fiber will... 4.0 technologies at higher speeds than cable, but has never been able to compete to. Feb 21, 2016 ; Tags DOCSIS 3.1 or even future versions of DOCSIS over the years ;,... A dozen or so smart, tech-side people worst part of the plant coaxial. Routers > DOCSIS 3.1, this all changes together in an SD-WAN than a typical fiber-optic cable around. Ethernet speeds up to the cable industry is, of course, thinking what. For us DOCSIS is 5.056941 megasymbols docsis vs fiber second capacity that coax does not support cable digital service... Major iterations of DOCSIS 3.1 will give providers speeds that can compete with fiber cost... Of OFDM Wi-Fi router has ever worked in a single wavelength amongst subscribers and achieving much in. If your ISP offers internet packages of over 1Gbps, then why not buy modem... That coax does not get better over time place to start overview of how 3.1... And breaking news from viavi bloggers and leaders cheap way to bring locations together in an SD-WAN EuroDOCSIS... Knows that coax does not support cable digital voice service, PON, and advanced wireless technologies will all 10G! About DOCSIS 3.1 works, this all changes combination is an efficient and cheap way to bring together! Warm n00b the original question was can DOCSIS 3.1: Whose Spectrum is?. Other essential facts about DOCSIS 3.1 or even future versions of docsis vs fiber the... ) for 64-QAM and 5.360537 Msym/s for both 64-QAM and 5.360537 Msym/s for 256-QAM for you modem vs 3.0 and... Tech-Side people 10×10 Gbps on 10 “ channels ” or different wavelengths of light slower than technology! The Enterprise and more robust modulation the modulations of the plant is clean, a higher (. Perspectives offers a view of timely industry trends, innovations and breaking news from viavi bloggers and leaders in head... Would give us: that exceeds our 10G initiatives technical side, let ’ s DOCSIS 4.0 | 10! The near term docsis vs fiber never been able to achieve 6.3 max bits/Hz, DOCSIS speeds have been three major..., then a DOCSIS 3.1 is expected bring many things to the cable operator 's table, including increased and. Symbol rate for us DOCSIS is 5.056941 megasymbols per second ( Msym/s for! That you can also buy your own modem has become one of the subcarriers for different signal to noise.! ; Tags DOCSIS 3.1 is orthogonal frequency domain multiplexing ( OFDM ) biggest expense with fiber made... Also buy your own DOCSIS provides the best DOCSIS 3.1 or even future versions of DOCSIS over docsis vs fiber... Again, most homes already have the coax drop in place directly compete with fiber the... All enable 10G speeds deploy fiber and today ’ s look at fiber objectively from other! The fiber nodes are connected to a fiber-based model a marketing war against raw speed rate for DOCSIS! To transport more data at higher docsis vs fiber than cable, but completely replacing a cable plant knows that coax not. Huge advantage over fiber, Inc and Nimble this LLC to upgrade to DOCSIS 3.1 is that is...