By polszewski, on October 30, 2008

DOCSIS resource

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It’s no surprise that cable operators face competition. That’s a good thing. As we wrote in our 2008 Industry Overview:

Competition is the lifeblood of a successful and thriving marketplace, and the cable industry faces stiff competition across all the markets it serves. The consumer is the beneficiary, enjoying more choice, greater convenience and better value than ever before.

Other companies come out with new products and services and we do likewise. But it may be that Verizon is feeling the heat a bit. I’m assuming that’s why they felt the need last week to launch an attack on the cable industry’s new DOCSIS 3.0 specification, which enables wideband Internet access.

Last year, we tracked Comcast’s deployment of DOCSIS 3.0 in a number of markets. Last week, Charter Communications joined in with the launch of its Ultra60 service. Later that same day, on Verizon’s PolicyBlog, came this post: Behind Cable’s DOCSIS 3.0 Broadband Claims. Let’s break down Verizon’s arguments.

Citing many analyses – yet linking only to a report prepared by the Fiber to the Home Council (hardly an unbiased source) – Verizon states that higher speeds on cable will decrease the customer experience and will require cable to upgrade.

In fact, the cable hybrid fiber-coax plant offers a great deal of capacity and flexibility in how nodes are combined to provide optimal service levels based on subscriber penetration and demand. But also unstated is the fact that FiOS also multiplexes (or combines the signals) to customers onto a shared trunk — they just do so in a different portion of their network. In other words, even though the link to customers might be very fast, there is still a choke point where customers have to compete for bandwidth. Too many customers trying to access the Internet at the same time can have the same effect on a FiOS network as it could on a DOCSIS network. Funnily enough, the blog post makes it sound as if Verizon doesn’t have to employ any network management at all!

Verizon makes a broad assumption regarding cable operator deployment plans for DOCSIS 3.0 services, somehow minimizing the technology because it is just now being deployed, and citing “indicators” that it won’t be deployed to all customers.

In contrast, cable’s investment to deploy DOCSIS 3.0 is modest. And with the channel bonding that DOCSIS 3.0 permits, network speeds of 100 Mbps, 160 Mbps, and even higher will be possible. In fact, a 750 MHz cable plant (90% of the country’s cable network miles) has a digital equivalent capacity of approximately 5 Gbps of bandwidth.

source: cabletechtalk.com



  • More about DOCSIS systems

    More about DOCSIS 3.0 you will find at VECTOR website.

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