
May 1999
Working The DSL Seam
BY CHRIS WHALEN
DSL is hot. The demand for faster and cheaper access to the Internet has created a
virtual diamond mine of opportunity for broadband access providers, and Digital Subscriber
Line (DSL) is one of the hottest new offerings. One of the reasons for DSL's popularity is
that the technology provides businesses with Internet access at speeds rivaling - and in
many cases better than - T1 lines (and other leased line options) at a fraction of the
cost.
Traditionally, a business has had three options for accessing the Internet: analog
dial-up modems, ISDN, or leased lines. Dial-up has fed the demand for Internet access by
bringing the Internet to the masses. Monthly costs are low but, unfortunately, so are the
speeds. ISDN has proven to be a cumbersome technology for the telephone companies. Not
only is it difficult to install, but is can be expensive for end users when metering
charges are added to monthly fees. In addition, the speed is lacking at only 144 Kbps.
Leased lines, such as T1s, have proven to be the most popular option for businesses
communicating over the Internet. However, $2,000 monthly charges for a T1 line are often
prohibitive for many small to medium-size businesses.
DSL, on the other hand, offers the speeds that business customers are looking for (up
to 2.3 Mbps symmetric speeds for SDSL; 8 Mbps downstream and 512 Kbps upstream for ADSL)
at affordable prices (approximately $400 a month). DSL's popularity is further evidenced
by the number of competitive local exchange carriers (CLECs) rolling out DSL services, as
well as "Data CLECs" focusing their services entirely on DSL deployment. Log On
America, a Providence, Rhode Island-based CLEC, is one example of a service provider
co-locating DSL Access Routers (DSLARs) in central offices (CO) of incumbent phone
companies (see sidebar) to offer high-speed DSL Internet access to
businesses and SOHO workers located within 18,000 feet of the CO. And Log On America isn't
alone. According to the 1999 Telechoice xDSL Atlas, the market for DSL is projected to
reach 2.3 million subscribers by 2002.
MTU APPLICATIONS
Until now, the opportunity to become involved in the DSL service business has been
restricted mainly to those who have spent countless hours and dollars becoming CLECs.
Having CLEC status gives service providers access to the phone companies' copper wiring
and the ability to co-locate DSLAR equipment inside the CO. These two factors are critical
to any successful DSL service.
However, opportunities are now emerging for aggressive Internet Service Providers
(ISPs) and value added resellers (VARs) looking for ways to offer business and consumer
clients DSL access, but who don't have the desire or the means to become a CLEC. This
opportunity comes in the form of placing access equipment inside high-rise buildings or
multi-tenant unit (MTU) properties to offer DSL services to the residents.
Using DSL technology in an MTU environment results in significant savings since it
utilizes the building's existing copper wiring. DSL allows high-speed data transmission
over that existing wiring to and from all customers inside the building. Think of service
providers as miners seeking to make the most of precious resources. DSL's use of existing
copper wiring could be likened to a new mining technique that greatly increases the value
of an existing seam by allowing the miners to extract more of the valuable deposits along
that seam. Other high-speed access technologies, such as Ethernet, require new cables to
be installed, which is time consuming and usually very expensive. To develop the mining
metaphor, running Ethernet cabling would be similar to tapping an entirely new seam of
uncertain value, or perhaps even to sinking an entirely new mine - much more expensive
propositions.
Running DSL service in an MTU environment represents a significant market opportunity:
DSL MTU applications are projected to reach over $1 billion with more than 3 million
connections by 2002 (Access Partners report, Jan. 1999). These numbers are appealing to
ISPs and VARs, who are in an excellent position to capitalize on MTU opportunities because
they have the experience and technology know-how to deliver effective service offerings.
Another attractive reason for an ISP to jump into an MTU application is that, once
building management has approved their presence in the building, the ISP enjoys a
significant advantage over the competition with the clients in the building.
IMPLEMENTING AN MTU SOLUTION
There are two parties involved in rolling out an MTU solution: the building proprietor and
the service provider. The building proprietor's role can be broken down into one of two
categories: the person who rents the copper lines to the service provider, or the person
who actually implements the network and leases Internet access from the service provider.
The service provider's role also falls in one of two categories: the company leasing the
in-building copper wiring from the building proprietor and providing Internet access, or
the company from whom the building proprietor leases access to the Internet.
There are two pieces of equipment and one connection required for a DSL MTU
application. First, a Customer Premise Equipment (CPE) router or bridge needs to be
installed in every subscribing tenant's office. The CPE device connects (via Ethernet) the
business's LAN to the copper wire. Second, the copper wire connects the CPE to the DSLAR,
which is normally installed in the location where the copper terminates from the offices
served (typically in the basement).
The final step for the DSL application is connecting the DSLAR to the ISP. This is
easily accomplished by running a dedicated line (usually a single T1 line) between the
building and the ISP.
THE INTERNET DIAMOND MINE?
There are two factors driving the growth of DSL MTU applications: the ease with which the
technology can be installed, and the application's significant market opportunities. These
specific issues are driving ISPs and VARs towards building proprietors nationwide. We are
beginning to see this happen in 1999.
Following are three things for any operator considering a DSL MTU application to keep
in mind:
- It's critical to have a consistent, well thought-out plan for approaching a building
proprietor. Understandably, the plan must create a win-win business opportunity for both
parties.
- ISPs and VARs must have strategies in place to market the DSL services to the building's
individual businesses. You cannot assume that being endorsed by building management will
automatically make the offering a success. An MTU operator has to have a focused sales
effort in place.
- It is important to consider the technology used to bring DSL services to a building. As
with any offering, the key is to provide a value-added service using the least amount of
equipment possible. The DSLAR accomplishes this by not only enabling a cost-effective
service that businesses want, but by also allowing ISPs to handle the data traffic easily.
Without a DSLAR, a building would have to be equipped with multiple pieces of equipment,
including a DSL access multiplexor (DSLAM) and at least a router or switch. The objective
in selecting the underpinning technology is to reduce the solution's complexity and the
potential points of failure.
For ISPs and VARs who have developed a complete DSL solution that address the above
three points, the MTU market represents a virtually untapped vein of wealth.
Chris Whalen is Vice President of Sales and Marketing for Interspeed, Inc.
Interspeed, a wholly owned subsidiary of Brooktrout Technology, develops single system
remote access solutions for Local Exchange Carriers (LECs, ILECs, and CLECs) and Internet
Service Providers (ISPs) who are striving to deliver greater speeds at lower costs. For
more information, please visit their Web site at www.interspeed.com.
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