Feeds

Vendors promised G.hn chips as ITU agrees PHY spec

Unified home networking standard takes major step forward

  • alert
  • submit to reddit

Boost IT visibility and business value

The International Telecommunication Union (ITU) has given its blessing to a key component of G.hn, the prospective standard for data networking over mains wiring, home phone lines and coax cabling.

As is the case with all standards organisations, the wheels move sure but slow. There are many more steps to take before G.hn becomes a formal standard, but the specification has now reached the stage - known as an "Approved Recommendation" - where companies can begin to develop products that implement the technology, safe in the knowledge that it isn't going to change to any appreciable extent.

The agreement, announced last week, covers G.hn's physical layer (PHY). The Data Link Layer (DLL) specification was said to be "stable" but this won't gain ITU's "Consent" until January 2010, with ratification a way down the line after that. The G.hn PHY achieved a similar Consent status in December 2008.

Also last week, the ITU marked up Recommendation G.9972, which governs, coexistence with existing powerline adaptors, as achieving the Union's Consent.

Almost immediately, powerline Ethernet chip maker DS2 said it will go ahead and develop its DSS9960 chipset for G.hn-based products, though since it's long been a G.hn supporter that's no more or less than expected.

Once again, DS2 stated its plan to ensure DS9960-based products work with older 100Mb/s and 200Mb/s products based in the Universal Powerline Association (UPA) standard.

UPA competes with HomePlug, which has favoured the IEEE's attempt to create a unified home wired networking technology, P1901.

G.hn uses a single combined PHY/MAC for all three cabling types. P1901, on the other hand, specifies three, incompatible PHY/MACs combos. Vendors can use any or all of these, ensuring buyers need to check beforehand which kinds of wiring a given product supports. They can't just assume compatibility from the P1901 branding. They can with G.hn.

In any case, P1901 has a G.hn compatibility requirement. If you're going to design P1901 kit, then you may as well just stick with G.hn and have done with it. That, G.hn's backers reckon, renders P1901 an irrelevance. ®

Special Report
G.hn-ing for gigabit How the next-gen home LAN standard war was won

The essential guide to IT transformation

More from The Register

next story
UK fuzz want PINCODES on ALL mobile phones
Met Police calls for mandatory passwords on all new mobes
Canadian ISP Shaw falls over with 'routing' sickness
How sure are you of cloud computing now?
Don't call it throttling: Ericsson 'priority' tech gives users their own slice of spectrum
Actually it's a nifty trick - at least you'll pay for what you get
Three floats Jolla in Hong Kong: Says Sailfish is '3rd option'
Network throws hat into ring with Linux-powered handsets
Fifteen zero days found in hacker router comp romp
Four routers rooted in SOHOpelessly Broken challenge
New Sprint CEO says he will lower axe on staff – but prices come first
'Very disruptive' new rates to be revealed next week
US TV stations bowl sueball directly at FCC's spectrum mega-sale
Broadcasters upset about coverage and cost as they shift up and down the dials
PwC says US biz lagging in Internet of Things
Grass is greener in Asia, say the sensors
Ofcom sees RISE OF THE MACHINE-to-machine cell comms
Study spots 9% growth in IoT m2m mobile data connections
O2 vs Vodafone: Mobe firms grab for GCHQ, gov.uk security badge
No, the spooks love US best, say rival firms
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.