Rackmount PRO700E User Manual download pdf (Page 10)

ACCESS | July 2011 19

18 ACCESS | July 2011

Central

Office

VoiceData

Fiber

MDU/MTU

with FTTB &

VDSL2 to

Units

School, Business,

Gov’t Building

VDSL2

Home

Network

CT-5374

NexusLink 3100u

(bonding)

Data

Home

WAP-5834

Access Point

Video

PSTN

Fiber

WAP-5834

Client

WAP-5834

Client

Up to 8 clients per AP

MAXIMIZING EXISTING ASSETS

with VDSL2 proves a winning strategy for Horizon

opper, once considered the prime conductor, has seem-

ingly lost its luster. Some industry experts predict its de-

mise due to the phenomenon of ber and its vast capacity

to handle high-speed voice, video and data transmissions.

Could it be the end for copper?

Not so fast, doomsayers! Innovative technologies – as if

through powers of alchemy – have transformed the po-

tential of copper, restoring its value and giving it a super-

charged life. One example is the use of VDSL2 (very high-

speed digital subscriber line), a powerful access technology

that exploits the potential of existing copper wire infrastruc-

ture by dramatically boosting its bandwidth capabilities.

It means without having to lay so much as a foot of new line,

local exchange carriers, such as Horizon in Southern Ohio,

are able to oer the same Internet speeds and triple-play

services as cable companies, while producing bandwidths

that rival ber.

“VDSL2 makes it possible for smart operators, like Horizon,

to ‘future proof’ their copper customers,” explained Rick

Hall, National Account Manager for Comtrend, the com-

pany that supplies the VDSL2 routers to Horizon via KGP

Logistics. “It allows them to deliver high speeds without

investing in ber deployment.”

But there is some distance degradation over copper wire

with VDSL2, and there’s the rub. Or is it? Another similar

technology ADSL2+ (asymmetric digital subscriber line),

can extend the eective distance of copper but with less

bandwidth than VDSL2.

Horizon has deployed both technologies in a two-pronged

strategy to oer residential customers in their local service

area the best possible connections. Moreover, Horizon is

able to use the same Comtrend router for ADSL and VDSL

customers, because the device can switch between each.

SOLVING THE SPEEDDISTANCE EQUATION

TO PROVIDE CUSTOMERS THE BEST OPTION

Misty Tuttle, Broadband Services Manager for Horizon, said

in regard to the VDSL2 conversion, “We currently have a

take rate of 44% of customers and we’re upgrading other

customers to ADSL2+. We utilize VDSL2 within close proxim-

ity to the box, and to get our reach just a little bit further,

we’re going with ADSL2+. The CT-5372 (Comtrend router)

is a great solution for us, because it’s one box that can serve

dual purposes.”

The conversion process, at rst, hit a few rough patches.

“Customers don’t really like to change,” Tuttle admitted. “We’re

putting new equipment in their homes and there’s a learning

curve. But, all in all, the customers that we’ve converted are

very happy with the quality of services they’re receiving.

“Our technicians have also found that things like the Com-

trend ACS server – which is one of the main reasons we went

with Comtrend – has been a fantastic tool in allowing us

to provision customers quickly and to troubleshoot, which

reduces our costs by not having to roll trucks all the time.”

“When rst looking at our options with VDSL2 and ADSL2+

versus Fiber to the Home (FTTH), it made a lot more sense to

us to use the network already built. These technologies have

allowed us to extend the life of our existing copper network,”

Tuttle armed.

In conclusion, Tuttle indicated that Horizon is looking ahead

at another possible upgrade in the near future to a bonded

VDSL solution, which takes advantage of both wires in the

twisted pair to enhance broadband capacity even more.

“We’re currently testing equipment that will help us stretch

our footprint even further in order to anticipate and ll

whatever needs our customers may have.” And Comtrend is

ready having already released their next generation of VDSL

gateways, the CT5374 and the Nexuslink 3100U.

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