Best Network Practices for DSL Deployment

Phylogy Solution Whitepaper: Line Conditioning for Accelerated xDSL

A Solution Whitepaper

The TripleStream® Line Conditioner accelerates attainment of ARPU & ROI goals of those wireline carriers
caught between the exorbitant cost of FTTH and the frustration of inadequate VDSL2 performance.

Many carriers are concerned that cost-effective service delivery options for IPTV are simply not available
today. Phylogy offers an important alternative, proven capable of bridging premium services to
subscribers beyond the reach of today's VDSL2 deployments while avoiding the high cost of fiber.

When TripleStream® is deployed as a standard-practice network engineering method for conditioning the
access loop, it can triple aggregate bandwidth capacity across xDSL distribution areas at one-third less
cost than present methods of operation (ref pg. 35).

Phylogy Corporate Offices
2350 Mission College Boulevard Suite 400 Santa Clara, CA 95054
866-PHYLOGY (866-749-5649) www.phylogy.com email: physales@phylogy.com

TripleStream Line Conditioner September 2009 Page 1 of 36


Table of Contents

_____________________________________________________________
Executive Summary pg 3

I. The Challenge pg 4

II. The Solution pg 5

III. Technology Brief pg 6

IV. How TLC Line Conditioning Works pg 8

V. Service Applications Across the Network pg 11
Leveraging Remote Terminal Assets to Extend Service Revenues pg 12
Extending Revenue Services from the Central Office pg 13
Deploying New RT-Fed Subscriber Service Areas pg 14

VI. Installing TLC Nodes into the Network
Flexible Speed-Splice Options pg 16
Deploying TLCs Into Existing Aerial Splice Cases pg 17
Access to Buried Plants Using Standard-Practice Procedures pg 18
Upgrading Existing Splice Pedestals pg 19
Co-Locating with Existing Cross-Connect Cabinets pg 19
Adding New TLC Cabinets to the Network pg 20
Design Rules for Placing TLC Nodes in the Loop pg 21
Utilizing Existing Network Splice Points for Optimal TLC Placement pg 21

VII. TripleStream® Line Conditioner Products
Line Cards pg 22
Line Card Testing pg 23
Enclosures pg 24

VIII. Planning Options for Maximizing xDSL Network Performance
Capacity, Transport Efficiency, and Equipment Utilization pg 25
Scaling Extended Reach into Expanded Distribution Area pg 27
Comparing Aggregate Bandwidth Augmentation Across a DA pg 28
Key Advantages for the Carrier pg 30

IX. TLC Network Management Strategy pg 31

X. An itemized cost-comparison business case pg 32

XI. About Phylogy pg 35

XII. Acronym Reference pg 36



Executive Summary
Telcos, equipment suppliers, and chipmakers originally expected VDSL2 distribution areas to reach
4.5 to 5 kft for 25 Mbps IPTV services. But the telco industry has discovered over the past couple of
years that variables in the access network have made that goal unrealistic, and HDTV-quality reach
has been dialed back 30% within the last 18 months based on real-world experience in the access
plant. This reach rollback has then driven IPTV deployment costs higher and has left “customers
willing to pay” either under-served or un-served.
While the majority of US IPTV service is currently deployed via ADSL2+ to serve SDTV out to 8 kft,
many telco's also deployed DSLAM RT's using VDSL2 to serve HDTV IPTV based on a 4-½kft design
rule. Having now dialed back that design rule to a field-proven realistic 3 to 3.5 kft, these RTs are
shelved with excess VDSL2 ports that cannot reach their anticipated service range.
This excess VDSL2 Performance Shortfall
DSLAM capacity,
now underutilized,
represents a
stranded
investment that can
never realize the
original ROI goals
without a change in
strategy.
The other fallback
solution to the
VDLS2 shortfall –
pair bonding – has
also uniformly
proven to be a non-
performer
according to major
US carriers, citing a shortage of spare pairs in the network hindering mass deployment. In addition,
the added crosstalk can cause the aggregate demultiplexed bandwidth from a bonded pair to be less
than 70% of the anticipated.
Alternatively, carriers who eschewed VDSL2 for ADSL2+ are limited to Standard Definition-only IPTV
offerings, leaving them vulnerable to cable and satellite competition, and short of their revenue goals
for HDTV subscribers. HD has now penetrated over 40% of American homes, and the prospect of an
xDSL access network limited to SDTV will never deliver the revenues and ROI that are mandatory for
21st Century telco business models.
Carriers are now faced with having to further deploy un-planned additional RT investments to make up
for this shortfall in VDSL2 performance. They must match cable competition, meet the demand for
HDTV, and to achieve their revenue targets for ARPU (Average Revenue Per User) approaching $100
for bundled triple play services.
Phylogy is solving this challenge with a rapidly-deployed, affordable, and comprehensive networking
improvement solution that directly improves the carriers’ ability to more profitably compete for premium
service subscribers.



I. The Challenge

● Millions of telco subscribers have low DSL performance or are out-of-range;

● Existing DSL service limitations can not effectively compete against cable;

● Telco’s are missing their ARPU goals for premium services including IPTV

The number of unserved & underserved DSL subscribers are higher than expected using
present DSL methods, capping the ability to economically expand revenues and making the
penetration of new market share more costly than anticipated. Expanding service to these
unreached areas is taking too long, often not being able to deliver the HDTV quality
subscribers are demanding, and leaving telcos unprepared to compete aggressively against
cable.
Finally the expansion of DSL service using present methods of operation (PMO) is too
complicated. This unnecessary complexity in network engineering and installation increases
the cost of xDSL extension up to 30% higher than required using line conditioning, thus
limiting the revenue, ROI, and market share goals of telcos worldwide.

The presence of strong premium-market demand (e.g., IPTV subscribers willing to pay for
quality HDTV service) is well documented. But telcos are lagging in their ability to grasp this
market because they are needlessly struggling with sub-optimal xDSL network performance.

IPTV’s share of the overall pay-TV subscriber base will grow from 3% in 2008 to 14% in 2013
at the expense of cable TV’s share, which will decline from 76% to 61% over the same period, according to a new
forecast by Pyramid Research (www.pyr.com). “IPTV operators continue to make strong strides in gaining pay-TV
market share,” comments Özgür Aytar, Senior Research Manager, Broadband & Media. “Pyramid Research estimates
that IPTV will drive a global total of 9m net subscriber additions in 2008, 40% of which will come from Asia-Pacific region.”

IPTV subscriptions to grow 64 percent in 2008: Gartner September 25, 2008
LONDON (Reuters) - Worldwide subscriptions to Internet-based television platforms
are on track to reach 19.6 million subscribers in 2008, a 64 percent increase, according
to analysts at Gartner. Revenue from worldwide Internet protocol television is forecast
to reach $4.5 billion, up 93.5 percent from a year earlier, with Western Europe boasting
the largest number of IPTV subscribers and North America the largest market for IPTV
revenue. It forecast that 1.1 percent of households worldwide would be using IPTV in
2008, and expects that to rise to 2.8 percent by 2012.

25% of U.S. Households Have at Least One HDTV Set: Survey April 24, 2008
Los Angeles - A new survey of U.S. consumers found that 25% of U.S. households, or 28 million, now have at least one
HDTV set, and that 5.5 million households purchased an HDTV set for the first time during the 2007/2008 holiday and
Super Bowl season. Conducted by Frank N. Magid Associates, the survey additionally found that some 3 million homes
added a second HDTV set during this same time frame, making for a total of nearly 10 million multiple HDTV set homes.



II. The Solution

Phylogy is delivering a proven technology that maximizes the rate and reach of DSLAMs and
modems. This paper demonstrates how TripleStream Line Conditioning (TLC) is:
● A more economical,
efficient, and faster
technology option than
adding costly new RT /
DSLAMs for extending
reach and bandwidth;
● A seamless access loop
technology that is fully
compliant with existing
telco operations and all
DSL standards; and
● A fully planned
deployment solution delivering rapid installation that makes TLC the fastest time-
to-market asset with fastest time to payback of any xDSL expansion option.

Conditioning the Loop
When TripleStream® is deployed as part of standardized network design & engineering
practice, it can triple aggregate bandwidth capacity across xDSL distribution areas at one-
third less cost than present methods of operation ($353 vs. $533 per subscriber line – see
section X). Thus we are suggesting that TLC offers the wireline carrier an optimal design
practice for engineering maximum ROI from all existing and planned xDSL network assets.

OPTMAL DESIGN PRACTICE for ENGINEERING xDSL NETWORKS

PRESENT xDSL TripleStr eam
EXPANSION METHODS (PMO) “BEST PRACTICE”

SLOW DEPLOYMENT
ACCELERATE DEPLOYMENT 800% TO DELIVER
12 to 18-month delay to plan and deploy RT DSLAMs
FASTEST TIME-TO-PAYBACK
versus six weeks for Line Conditioners

HIGH COST
New RT / DSLAMs require power, new fiber back-
REDUCE DEPLOYMENT COSTS 34%
hauls, civil engineering, pedestals and new copper
legs for re-homing

LOW BANDWIDTH
INCREASE AVAILABLE BANDWIDTH
Even new DSLAMs are not capable of delivering
IN THE ACCESS LOOP UP TO 300%
maximum DSL bandwidth across CSA

LOW ASSET UTILIZATION
FULLY LEVERAGE ALL EXISTING DSL ASSETS
RT DSLAMs not fully loaded due to reach limitations
TO MAXIMIZE BANDWIDTH CAPACITY & ROI
- DSL Network is Under-Utilized



TripleStream® Line Conditioning (TLC) is a non-disruptive, fully-compatible xDSL technology
proven effective at leveraging the performance of all of today's xDSL chipsets and networks.
Line Conditioning bridges the gaps in xDSL performance to help the wireline carrier meet
their core business goals:

● Fully realize VDSL2’s promised performance to approach original design rules;

● Improve the efficiency and utilization of existing DSLAMs housed in RTs;

● Enhance legacy ADSL installations to approach the performance of ADSL2+;

● Leverage CO-fed xDSL plants to serve 35% deeper into the CSA and help minimize the
need for costly RT installations; and

Applying this ubiquitous line conditioning method across the entire xDSL service spectrum
shows that provides a substantial revenue impact, resulting in improved service availability
for all four revenue classes:

● Data-Only (256Kb – 1.5Mb)

● Hi-Speed Data + VoIP (3 – 7Mb)

● IPTV for Standard Def (8 – 15Mb)

● IPTV for Hi-Def (16 – 30 Mbps)



III. Technology Brief on the TripleStream ® Line Conditioner (TLC ® )

Phylogy’s ability to improve xDSL reach and
bandwidth is achieved using a simple line-insertion
device which auto-calibrates, requiring no field or
EMS setup. TLCs are installed using a familiar
speed-splice process fully described in section VI.
All TLC configurations are line-powered via the
POTS 48 volts requiring no external power
supplies. As a ruggedized, field-proven solution, all Phylogy products offer water-proofed,
fully-weatherized enclosures requiring no active cooling.

● The TripleStream Line Conditioner is a 4.5” by 7.5” dual-port circuit board using analog
components and a patented process;
● The circuit grooms the DSL carrier signal to reduce noise, and conditionally amplify it;
● TLC operates in synchronization with the xDSL chipsets in the DSLAM and modem to learn
the exact loop make-up on a line-by-line basis and then auto-calibrates itself to match each
line’s characteristics to provide optimal enhancement on a line-by-line basis;
● TLC is transparant to layer 2 and layer 3 techniques, making it compatible with future xDSL
coding and compression methods
● TLC only uses 250 mW per line (1/4 watt)

As a true plug-&-play technology, the TripleStream® solution is simple and fast to install:
● TLC is spliced into a service pair approximately mid-loop between the DSLAM and farthest
CPE. For our multi-line enclosure solutions, optimal performance is achieved by identifying
convenient access points to feeder cables which are midway between the DSLAM and the
subscribers’ CPE. Documentation and placement calculators are provided to aid optimal
deployment.
● Cabinets for high-volume deployment include cable splicing junction bays and integral cross-
connect blocks
● Installation is accomplished with
standard craft practices. No additional
skills, tools, or training are needed.
● TLC automatically tunes its internal
circuitry to compensate for plant quality,
cable gauge, and cable length
● The voice signal is passed through
untreated, maintaining lifeline service
even during power outage



IV. “Conditioning the Loop”
How TLC Line Conditioning Works
Optmizing the Power / Spectral Density (PSD) Envelope
Operating in concert with all xDSL chipsets used in DSLAMs
and modems, TLCs effectively shape the power / spectral
density envelope to increase bandwidth rates across a longer-
reach of the copper medium. Envelope shaping uses a
dynamically tuned circuit and low-power amplification
consuming at most only a quarter watt.

Better than Brute-Force Amplification of the DSL Carrier
Distinctly superior to all other line conditioning approaches which use a brute-force signal
amplification method, the Phylogy approach significantly improves SNR. Other methods
actually increase signal noise as they increase signal power, adding more crosstalk within
binder groups and thus degrading SNR. Because Phylogy avoids power-hungry
amplification, our line conditioning circuits draws only a 1/4 watt compared to the 6watts
consumed by competing options. This minimal power draw then provides several key
advantages:

► The TLC circuit operates using only the 48v POTS life-line power

► No external power supplies are required

► No added CAPEX to provide external 120V power

► No significant heat generation means no added cooling requirements are needed

► The lack of external power and active cooling, plus our dual-port configuration, enables
high-density cabinet deployment.

Improving Bit-Loading Across the PSD Mask,
TLCs Selectively Boost PSD Profiles Yields up to 8Mbps Gain
Since the higher frequencies in the copper spectrum are most susceptible to noise and
attenuation, PSD bit-loading favors use of the lower spectra. Yet Phylogy has developed a
proven shema to effectively extend bit-loading across these higher frequencies. Phylogy
operates in tandem with all xDSL chipsets to exploit these PSD physics:

► DSL chipsets sense the length and condition of each subscriber service pair and then
tunes the gain of its line driver amplifier to optimize gain for that line's length and
resistance profile.

► DSL chipsets always profile each
subscriber line during initialization by
communicating with the subscriber
modem. But with a TLC inserted
midpoint into this circuit, the DSL
chipset in the DSLAM now senses the
TLC as the modem.



► During re-initialization, the DSL chipset now characterizes a conditioned service pair as
being only half as long as the original modem's distance.

► Now the line driver in the DSLAM's chipset lowers it's gain for that line, sending out a
cleaner, lower-noise signal.

► Additionally, the bit-loading algorithm in each DSL chipset now profiles that service pair
as a cleaner line and correspondingly loads more data into the higher spectra of the
copper medium.

Sending a Higher-Spectrum Signal Farther than DSL Chipsets Can
With additional data now re-mapped into higher PSD bins, Phylogy successfully extends the
reach of the 2-to-4Mhz bins four ways:

1) PSD shaping induced by TLCs results in DSL carrier noise being up to 6dB lower when it
arrives at the TLC node

2) TLCs then apply additional active noise cancellation using common-node rejection to
notch-filter RF interference

3) Full-spectrum amplification is then applied using variable DC gain. During initialization,
TLCs profile the carrier amplitude received form the DSLAM and apply DC gain to
compensate for line loss, optimized on a line-by line basis

4) Selective spectrum amplification is finally applied to further boost the higher frequency
PSD bins. Using peaking equalization, the TLC boosts gain on those data-rich PSD bins
in the 2-to-4Mhz range of the copper medium.

Typical Reach Extension Delivered by TLCs over 26AWG Copper
Below is shown four real-world measurements of in-service DLS extension using TLCs in a
26AWG access loop.



Summary Performance Gain for VDSL2
Combining the cleaner signal transport, higher bit-loading, and intelligent power boost features of
TLC, the chart at right plots the 10Mbps bandwidth gain the TLC delivers at 5Kft of reach. Where
the VDSL2 performance for HDTV services falls below 25 Mbps at 3.5Kft, the TLC performance
assures subscriber satisfaction for HD IPTV services 50% deeper into the distribution area.



V. Service Applications Across the Network

Extending IP Service Tiers
The primary application of TripleStream® Line Conditioning (TLC) is to optimize access network
performance. All classes of revenue services are extended deeper into the distribution area,
reaching both the unserved and under-served subscriber. To achieve this objective, TLC
technology applies to all xDSL broadband applications within the access network:
● Brings new service to unserved or “dead zone” distribution areas (DAs)
● Boosts reach and bandwidth in existing “underserved” data-only ADSL and ADSL2+ service
areas
● Extends service areas for existing ADSL2+ IPTV installations (standard definition SDTV)
● Extends the service
area for existing VDSL2
IPTV service areas (high
definition HDTV)
● Lowers the deployment
costs up to 30% for new
VDSL2 IPTV service
areas (high definition
HDTV)

Conditioning the Loop - Two Application Options
By providing highly scalable and flexible options for deploying the TLC solution (see section
VI), Phylogy enables two primarily different yet highly complementary service applications:
● “Quick-Turn Provisioning” supports on-demand installation of small line-count
TLC nodes to boost bandwidth for underserved individual subscribers. Fast,
cheap, and easy to deploy, these band-aid installations let you opportunistically protect
your subscriber base against competitive erosion and provide revenue-enhancing
service upgrades for time-sensitive special projects.

● “Standard-practice network conditioning” engineers the access network using
line conditioning across the CSA to support higher aggregate bandwidth capacity
and higher efficiency of all xDSL assets. Described as “Best Practices Network
Engineering” in Section VIII, this method significantly improves both network
performance and utilization of existing xDSL assets including DSLAMs, remote
terminals, fiber backhauls, and CO switchports.



How TLC Extends IP Service Tiers
A) Leveraging Remote Terminal
Assets to Extend IP Service Tiers

TLCs extend all IP service tiers deeper into
the DA, providing up to 300% more aggregate
bandwidth capacity for the underserved and
unserved areas (ref pg. 29). Diagrams (right)
show the logical migration of existing xDSL
service tiers to a higer revenue-generating
capacity using TLCs.
Chart 1)
Typical RT/DSLAM installation supporting five
tiers of IP services:
• HDTV-grade IPTV over VDSL2
• SDTV-grade IPTV over ADSL2+ or VDSL2
• Under-served, VoIP & data-only
• Under-served, data-only over ADSL2+
• Unserved areas in the DSL “dead zone”
Chart 2)
Opportunity to upgrade each tier to the next
higher revenue catagory, based on the
extended bandwidth rates that TLC provides.

Chart 3)
Installation of four 50-line TLC cabinets and
the subsequent boost in bandwidth that each
one delivers to support the rapid upgrade of
all service tiers.
Since present DSL methods create larger-
than-expected dead zones, Phylogy makes
the penetration of these unserved and under-
served markets easier, faster, and cheaper
than using the traditional approach of adding
more RT/DSLAMs.

Chart 4)
Additional bandwidth for each service zone.
The revenue increases made possible by the
TLC service expansion are significant,
effectively doubling the service area for each
service tier. Yet these revenue gains are
achieved with no CAPEX spending to
upgrade the existing xDSL infrastructure.
With TripleStream, existing RT, backhaul, and
DSLAM are better-utilized to generate a
higher return on this legacy investment.



B) Extending Revenue Services from the Central Office

For carriers
worldwide, and for
several in North
America, xDSL
served from the
central office (CO)
is common practice.
Emerging markets
are especially
interested in adding
or augmenting their
broadband
infrastructure
without using
remote terminals
(RTs).

The obvious economy of adding new subscribers and upgrading existing ones without the
cost of new RTs, backhauls, and DSLAMs is a compelling application for TLCs.

Since TripleStream Line Conditioning applies to all xDSL broadband applications, it is the
logical choice for extending and accelerating the broad-scale deployment and augmentation
of broadband services across the access network without reliance on costly RT
infrastructures.

● Extending ADSL2+ data
service by 3 to 5 kft, bringing
new service to unserved dead
zones;

● Boosting VDSL2 IPTV
bandwidth (at 6 Kft reach) from
10 Mbps traditional up to 20
Mbps conditioned to enable
High Definition TV service; and

● Extending service area for 25
Mbps IPTV (Hi-Def) from 2.7Kft
traditional out to 4 Kft
conditioned.



The Subscriber Service Area (CSA) map below illustrates both the extension and
augmentation of broadband applications enabled by a CO-fed TLC network architecture.

Augmenting CO-Fed Service Tiers Using TLC without New RT / DSLAMS

By comparing installation requirements for a CO-fed TLC network versus a new remote
DSLAM, the cost savings are clearly obvious (and are tallied in section XI). But perhaps
more important for some carriers is the ability to rapidly capture new subscribers with TLC’s
huge time-to-market advantage of weeks versus months.



C) Deploying New RT-Fed TLCs Reduce Dependence on RT / DSLAMs
Subscriber Service Areas
1)
Shown at right is a comparison
of the network infrastructure
required to provide HDTV
service at 26 Mbps to 740 new
subscribers.

Step 1)
The new customer service area
(CSA) that is currently beyond
the service reach of existing RT
/ DSLAMs.

Step 2)
The traditional method (PMO)
of service extension requiring
deployment of three new RT /
DSLAMS serving a 768-line
2)
CSA.

Step 3)
The use of four 96-slot TLC
cabinets plus one new RT /
DSLAM serving the same 768-
line DA.

● Using DSLAMs without line
conditioning limits the reach
of VDSL2 service for HDTV to
3.5 kft or less, requiring three
new RTs with pads, cabinets,
power, backhaul and 280-port
DSLAMs to serve the new
740-subscriber area.
3)
● By adding four 192-line TLC
cabinets, a single 768-line
DSLAM can service the entire
CSA.

● A cost-itemized comparison
including hardware and labor
is provided in section X,
entitled “Business Case for
TLC”



VI. Installing TLC Nodes into the Network
Using “Speed Splice” Solutions

One-Day Installation Turns Up 100+ Homes
Phylogy offers a fully-documented field installation plan
with scalable options to accelerate xDSL expansion for any
access network configuration. Abundantly detailed to
match specific needs, this full suite of speed-splice options
makes TLC the fastest time-to-market and fastest time to
payback of any xDSL expansion option.

One to 192 lines
per TLC enclosure

Full Range of Flexible
Speed-Splicing Options
TLC line cards are deployed using Phylogy’s speed-splice enclosures which range from
single-line packages to 192 line metal cabinets. All enclosures are simply spliced into the
telco cable, using industry-standard splice modules. These simple snap-fit connections –
such as 3M’s™ “MS²™” splice modules – are all that are required to install the necessary
signal and power connections to Phylogy’s TripleStream Line Conditioners.



A) Deploying 1, 5 and 20-Line TLCs Into Existing Aerial Splice Cases

For small applications serving a few households, TLCs can be conveniently mounted
adjacent to aerial splice junctions. Pole-mounted options include:

● Single-line metal enclosures
Pole-Mounted Options Support
● 5-slot or 10-slot weatherized polycarbonate 1 to 30 Ports of Line Conditioning
housings featuring bolt-on brackets

● Metal or polycarbonate pedestal closures
containing either or both of the 5-slot and 10-
slot housings.

These pole-mount options can be quickly hand-
spliced using traditional Scotchlok™ splice
modules. Where existing “MS²™” splice modules
are available in the aerial splice case, the 5-slot
and 10-slot enclosures can also be supplied with
quick-connect MS² pigtails.

Phylogy’s new dual-port TLC line cards enables
double the enclosure capacity for improved
economy. For example, the 10-slot case can be
upgraded to serve 20 subscribers with no change
to the enclosure itself.

Phylogy Pedestal Option for 5- to
30-Port Aerial Splice Applications
Charles CPLS PedLock shown



B) Rapid Access to Buried Plants Using Existing Splice Pedestals
and Standard-Practice Quick-Splice Procedures

By definition, splice points are broadly
available across all distribution areas. These
Typical Quick-Connect Splicing provide easily-accessible junction points for
Feature Found in Most Splice speed-splicing TLCs wherever needed. Since
Pedestals Used in Buried Plant the splicing tools and skill set are part of every
telco’s standard-practice procedures, insertion
of TLCs is a rapid, low-cost process requiring
no new training or tools.

Splice pedestals are a standard network
component used for underground installations.
Shown at left the pedestal cover removed to
reveal a cable splice junction (2). Most often
these cable splices are performed using splice
modules such as 3M’s™ “MS²™” splice
modules which provide rapid quick-connect
1) installation.

These MS²
splice modules
are used as
standard-
practice
procedure for
buried plant
because they
2) provide flexible
network planning and expansion options for
adding new subscribers to existing cable
grids.

The sequence at left demonstrates the speed-
splice process. Starting with (2) an existing
MS² is shown. In (3), this splice block has
been separated, and in (4) a new MS² junction
3) serving the TLC is being snap-fitted onto the
subscribers’ existing service cable. Not
shown is the second TLC splice made
similarly to the DSLAM serving cable.

All TLCs can be ordered with pre-installed
MS² or any other desired type of splice
junction to support speed-splicing. Once this
simple splice block is mated, all required
electrical connections have been made in a
4) single quick-connect operation.



C) Upgrading Existing Splice Pedestals

For buried plants, the telco benefits from the quick installation offered by Phylogy’s TLC.
Five to 30 lines can be upgraded in a few hours via the speed splice operation shown below.
Higher capacity options are shown on the next page for conditioning up to 192 lines.
Shown below is the sequence used for adding a 5 – to 30 line TLC enclosure to an existing
splice pedestal. This speed splicing procedure uses the industry-standard splice juctions
such as 3M’s MS². Image 1) The existing splice juctiion, ready for upgrade. Image 2) MS²
junction has been separated. (NOTE: bridging connectors are used during this step to avoid
service interruption, but are not shown.) Image 3) Five-line TLC unit preconfigured with
integrated support frame and MS² pigtails dropped over the base of an existing splice
pedestal. Both a 5 and 10-line unit will fit into the pedestal to condition 30 pairs using our
dual-port lince cards.
Sequence for Upgrading an Existing Splice Pedestal Supporting 5 to 30 Ports

Once the TLC is quick-spliced between the DSLAM cable and the subscribers’ feeder cable, the
unit can be closed up and secured. No other engineering, provisioning or power supply work is
required, and all necessary electrical connections are made within the simple MS² junction.

Splicing onto Existing Cross-Connect Cabinets
Our weatherized polycarbonate housings can also be bolted onto or placed inside existing
cross-connect cabinets.

Flexible Options for Inserting 5 to 96 Ports of Line Conditioning
Using Existing Cross Connect Cabinets



D) Adding New TLC Cabinets to the Network

The six-step diagram below itemizes the installation process for speed-splicing a new 24 to
192-port Phylogy cabinet. Step 1) The original splice pedestal with its buried cable. Step 2)
shows the original MS² splice juction exposed and the new concrete pad and Phylogy cabinet
installed. Step 3) shows the original splice block separated. Step 4) shows a pre-
connectorized 20-foot cable tail trenched between the pedestal and new cabinet. Typically
this 20’ cable would be laid prior to the concrete pad being set and would thread through a
center hole in a precast pad.
Step 5) illustrates the quick-connect crimping process used to join both:
a) inside the pedestal - the main cable junction and the pigtail junction to the TLC cabinet
b) inside the cabinet - The cabinet rack can ship with MS² slice junctions supplied (or any
other preferred standard splice juction) for quick connect to the 20” pigtail cable.

Co-Locating New Phylogy Cabinets serving 24 to 192 Ports of Line Conditioning



E) Design Rules for Placing TLC Nodes in the Loop for Optimal Performance

In applications where the copper loop
uses a uniform wire gauge, TLCs can be Inserting the TLC half the distance
placed mid-span between the DSLAM and between the DSLAM and the CPE
the subscriber’s CPE. This mid-way for VDSL2 Installations
location is flexible within plus or minus
one thousand feet, and delivers the
maximum boost in bandwidth for those
subscribers.

A second method is also used when the
copper transport uses mixed wire gauges
or has excessive line disturbers like
bridge taps or coils. These conditions
result in a non-linear line resistance. Thus
the physical length location method in
Option 1 will not optimally site the TLC
node. In this case, the planner should
calculate the loop mid-point according to
loop resistance rather than distance. To
simplify placement planning for precisely
locating optimal TLC positioning, Phylogy
supplies easy-to-use planning charts.

F) Utilizing Existing Network Splice Points for Optimal TLC Placement

As we have shown, all multi-line TLC Matching TLC Insertion Points
enclosures can be installed through to Existing Speed-Splice Points
a familiar quick-splice procedure.
Shown below is a “to-scale” diagram
of an underground plant having the
typical placement of splice pedestals
every 600 to 800 feet.

Notice that the broad availability of
these existing splice pedestals
provides more-than-adequate
locations for easily inserting TLC
nodes consistent with the optimal
architecture design rules described
previously. No difficult trenching or
manual splicing would be required
for deploying TLC nodes in their
optimal position in this type of buried
plant.



VII. TripleStream® Line Conditioner Products

A ) L i n e C a r d Configurations

Phylogy offers a family of standards-based TripleStream
Line Cards to support the full-range of applications. These
options provide for flexible allocation of bandwidth
allocations, allowing a telco to customize service levels to
subscriber plans.

Phylogy’s “Triple Play” models maximize data rate on short
loops while “Extended Reach” models maximize reach on
long loops as shown below.

Phylogy’s line cards can easily be added individually or replaced by the telco to match
subscriber demand. This flexible, one-hour, on-demand deployment capability has no impact
on neighboring line cards or copper pairs.

Subscriber turn-up is automatic, taking only minutes to perform. The TLC’s self-calibration
completes in conjunction with DSLAM and modem’s normal DSL training phase.

Shown at left, VDSL2 line
cards are available in dual-port
configurations to double
service densities and reduce
costs in advanced networks.



B) Line Card Quality and Reliability

TripleStream has been tested on multiple
DSLAMs and modems around the world,
proven in hundreds of real-world applications
to certify its high product reliability:

• TLC designs are engineered to assure
performance in the harshest
environments;

• Components are Military-grade and
Industrial-grade;

• All products are designed, manufactured, and tested to meet the needs of worldwide
markets:

FCC emissions immunity test;

GR-1089 Lightning/Overstress tests;

Accelerated Life Testing;

Temp cycle testing (-40 to +65C);

ISO9000 manufacturing assures quality control; and

CE and RoHS models available.



C) Enclosures: 5-to-20 line Hubs and 24-to-192 line Cabinets
TripleStream™ Enclosure Solutions are designed to provide ease of deployment and
management of TripleStream™ Line Conditioners. Once the enclosure is spliced into the
main telco cable, Line Conditioners are added by plugging them into the enclosure’s
assigned card slots. All card-slot shelves provide plug-&-play docking of line cards into the
backplane which is pre-connectorized to the cross-connect block.

Should a carrier or reseller wish to use their preferred supplier for cabinet enclosures instead
of these Phylogy models, Phylogy will license the reference designs for all backplanes and
card chassis.

Shipped from the factory fully tested and ready for deployment, Phylogy enclosures are
available in capacities ranging from 5 to 192 ports, configurable by the telco in the field.
Individual line conditioner cards are also available for order.

The 5, 10, and 24-slot models are available in weather-hardened lockable polycarbonate
enclosures. When populated with the new dual-port line cards, these cabinets will provide
line conditioning for 10, 20, and 48 subscribers. Phylogy’s 48- and 96-slot models are
manufactured in heavy-gauge steel and high-density cross connect fields are provided to
facilitate rapid installation and maintenance. These 48 and 96-slot models will also
accommodate the new dual-port line cards to provide 96 and 192 port capacities. All models
also incorporate an “in” and “out” stub box to provide a weatherized enclosure for cable
splice protection.



VIII. Planning Options that Maximize Network Utilization

A) Revenue Capacity, Transport Efficiency, and Equipment Utilization

TripleStream can be readily standardized
Deploying VDSL2 Service Areas:
as a “best-practices” network engineering
The Planning Challenge
architecture to maximize both the
bandwidth capacity and the bandwidth
transport efficiency of any existing xDSL
network. The TLC solution achieves this
value-add by serving as a bandwidth
booster on a line by line basis, and then
delivering higher aggregate bandwidth
across the DSLAM and its backhaul. The
TLC method achieves higher equipment
utilization across the entire access
network including switchports and fiber
backhauls – delaying the need to expand
those assets even as subscriber
bandwidth increases.

Why current VDSL2
access networks are underutilized
As defined in the Executive Summary, original VDSL2 specs and resulting DSLAM design
rules were intended to reach more subscribers with higher bandwidth. Yet telcos have
reluctantly dialed back HDTV-quality reach by 30% to 50% due to lower actual performance.
This rollback has driven IPTV deployment costs higher and have left “subscribers willing to
pay” either underserved or unserved. Phylogy’s TLC provides a means for the carrier to re-
establish a more profitable network architecture which enables:
Deploying VDSL2 Service Areas:
● Higher DSLAM and Remote Present Method of Operation (PMO)
Terminal (RT) utilization;
● Higher transport efficiencies across
fiber backhauls; and
● More efficient utilization of
switchports.
Shown here is a diagram of three
second-tier DSLAMs with their fiber
backhauls branching off from a tier1
DSLAM. This tiered architecture has
become standard practice for extending
xDSL service deeper into unserved and
underserved markets – and it is these
second-tier RTs that suffer lower
equipment utilization due to their limited
VDSL2 reach for HDTV services.
These second-tier DSLAMs essentially
provide reach extension and bandwidth
aggregation for the Tier1 DSLAMs.



Bandwidth Aggregation
Reach extension and bandwidth augmentation are achieved more quickly and economically by
using TLCs instead of deploying Tier 2 DSLAMs.
● Underutilized DSLAMs Present Method of Operation (PMO)
with empty slots:
RT infrastructure and
RT cost is fixed for civil
engineering, planning,
power and cabinets.
Fewer ports served per
capital outlay decreases
cost efficiency; and
● Underutilized Backhaul:
new tier 2 DSLAMs serve
to aggregate bandwidth
for the tier 1 DSLAM, but
the GigE fiber serving the
tier 2 DSLAMs runs mostly
empty due to the VDSL2
service limitations of that
DSLAM.

The bottom chart shows replacement of Tier2 DSLAMs with TLCs to deliver better utilization of
the Tier1 RT / DSLAM assets at lower overall cost, and with much faster time to market. Thus
DSL assets become more fully utilized when leveraged with TLC:

● TLC aggregates A Better Way to Engineer xDSL Access Loops
bandwidth for the Tier 1
DSLAM backhaul while
eliminating need for
inefficient Tier 2 fiber
optics
● Original Tier1 DSLAMs
are better utilized as
their slots are filled with
additional xDSL line
cards to feed the new
TLC distribution area
● ROI on the existing Tier1
RT infrastructure goes
up while CAPEX cost of
Tier2 RT / DSLAMs is
eliminated by using the
simpler TLC option.



B) Scaling Extended Reach into Expanded Distribution Area
Now lets examine expansion of the
network area. The ability to A Better Way to Engineer xDSL Access Loops
economically scale the TLC
solution is an important advantage
supporting a “Best Practices”
network deployment.

These two diagrams quantify how
a 2.7 kft extension of VDSL2 reach
translates into service expansion
across an entire CSA.

The TLC linear extension
effectively applies to a radial area
π
calculation using R2 to observe
service area gain. While the
geometry of real-world DAs do not
fit a perfect circle, and effective
reach is reduced by indirect wiring
paths, these comparisons provide
a useful view of the scaling
capability of TLCs.

The DA covered by CO-fed VDSL2
with a 3.5 kft reach is 38,484,600
square feet. The DA covered by
Tier1 DSLAMs serving VDSL2
another 3.5 kft equals 153,938,400
sq ft minus the original CO-fed
area, delivering a RT-fed DA of
115,453,800 sq. ft.

Next, for the area traditionally
served by Tier 2 DSLAMs, we
calculate the DA provided by a TLC
extension of 2.7 kft for VDSL2 at
25 Mbps. This TLC-fed DA
delivers an area of 295,593,144
sq. ft. Subtracting the Tier1
DSLAM area and the CO-fed area
yields a TLC-fed DA of
103,170,144 sq. ft. which is 89%
of the service area covered by
Tier1 RT / DSLAMs.

Finally this TLC-fed DA can be
deployed in a tenth of the time and 1/3 less cost than that required by RT / DSLAMs. We
believe these figures validate the TripleStream Line Conditioning method as the “best-
practice” xDSL architecture for delivering maximum network utilization, best CAPEX value,
fastest time-to-payback, and the best subscriber acquisition value for wireline carriers.



C) Comparing Aggregate Bandwidth Augmentation Across a DA

TripleStream deployment increases aggregate bandwidth across an entire Distribution Area
to add significant revenue-generating value to the existing plant.

Below is a comparison between the aggregate bandwidth supplied by using a traditional RT-
fed DSLAM versus the same RT / DSLAM augmented with TLC. The upper half of this
diagram shows the bandwidth delivered to each service tier by the CO-fed and RT-fed DAs.
The “Best Practice” bottom half shows the bandwidth upgrade delivered for each service tier
by TLC augmentation. The blue circles quantify the net gain delivered to each service tier.

As an example, the 18 Mbps “PMO” subscriber is upgraded to a 25 Mbps service. This
7 Mbps gain could support multiple SD video streams or one HD video stream, and a more
robust Internet experience.

TLCs can boost the aggregate bandwidth across all these extended service tiers by 300%
over the amount delivered by the original RT-fed DA. If one assumes a single subscriber in
each of the six extended service tiers, the aggregate bandwidth gain possible across all six
extended tiers totals 75 Mbps. This aggregate capacity represents a 300% increase in the
billable bandwidth available from TLC “Best Practices” network engineering.



D) Key Advantages for the Carrier

Phylogy’s ability to accelerate a telco’s attainment of ARPU & ROI
goals is based on delivering a synergy of accelerated rate, reach, and
revenues. An itemized business case analysis follows in the next
section, but a summary of the TLC cost advantage is listed below.

More than a band-aid for marginal service areas, TripleStream® Line
Conditioning is the most viable option available for improving bandwidth across the entire
DSL network. Because it delivers the best ROI – and the fastest time-to-payback – among
xDSL options for service extension, line conditioning can be adopted as a standardized
“best-practice” network engineering strategy across all access loops serving broadband
today.

Conditioning the Loop
When TripleStream® is deployed as part of standardized network design & engineering
practice, it can triple aggregate bandwidth capacity across xDSL distribution areas at one-
third less cost than present methods of operation ($353 vs. $533 per subscriber line). Thus
we are suggesting that TLC offers the wireline carrier an optimal design practice for
engineering maximum ROI from all existing and planned xDSL network assets.



BEST PRACTICE for xDSL NETWORKS: “CONDITIONING THE LOOP”

PRESENT xDSL METHODS - PMO TLC “BEST PRACTICE”

SLOW DEPLOYMENT - 12 to 18 month delay to plan and ACCELERATE DEPLOYMENT 800%
deploy RT DSLAMs versus six weeks for TLC

HIGH COST - New RT / DSLAMs require power, back-hauls, REDUCE DEPLOYMENT COSTS
civil engineering, pedestals and new copper

LOW BANDWIDTH – even new DSLAMs are not capable of INCREASE AVAILABLE BANDDWIDTH
delivering maximum DSL bandwidth across CSA IN THE ACCESS LOOP UP TO 300%

LOW UTILIZATION - RT DSLAMs not fully loaded due to reach DSL INVESTMENTS FULLY LEVERAGED
limitations - DSL Network is Under Utilized TO MAXIMIZE ROI

TripleStream Line Conditioning offers the fastest and lowest-cost architecture for extending
DSL services. Rather than adding more costly RT / DSLAMs to extend reach and rate,
augmenting both existing and new DSLAMs is the more economical, efficient, and faster
solution for satisfying both unserved and underserved broadband markets:

● Fastest time-to-payback of any xDSL extension option
Installs in days vs. months to add new revenue streams quickly;
Does not require permitting or civil engineering;
Requires no IT OPEX, training or headcount;
Highly flexible for on-demand installation to capture subscriber demand
opportunistically; and
Immediate ROI from new subscribers when installed on-demand.

● Extends All IP Service Tiers Deeper, adding up to 300% more aggregate bandwidth
in underserved and unserved areas
Defends service areas against competition, minimizes churn, boosts customer loyalty;
Improves utilization of backhaul capacities
Delays cost of adding second and third-tier DSLAMs

● Maximizes Return on all the installed xDSL Assets
Fully standardized and productized for broad-scale deployment as a standardized
xDSL architecture;
Leverages the embedded copper base and existing RT / DSLAM investments to
improve the ROI from legacy assets;
Can double revenues per RT/DSLAM
Minimize the need for costly FTTN Installations;
Simplified xDSL installation cuts CAPEX cost of service extension up to 34 percent.



IX. TLC Network Management Strategy
A) Protecting Lifeline POTS Integrity
Each Triple Stream line card contains a bypass splitter so that the POTS (voice) traffic is always
available, even if the Triple Stream port fails. For diagnosing physical line discontinuity, the
TripleStream modules contain a “loop around” feature to allow normal mechanized loop testing
such as MLT and 4Tel.
B) TLC Node Management Using “Standard Operating Procedures”
Phylogy has formulated a method for managing TLC network nodes which is founded on
simplicity and lowest-operating-cost strategies. To engineer the TLC advantage of self-powering,
which eliminates complexity and costs, it was designed to operate within a ¼ watt limitation.
Thus the TLC circuit design is extremely efficient and provides no active element management
interface.
TLC operates as a Passive Device in the Network
Much like splice blocks and line coils are passive devices, the TLC line card operates passively
within the network. It is completely transparent to both signals and active network components
like DSLAMs and CPE modems. The operational status of the TLC is easily monitored and
alarmed using DSLAM management tools the carrier currently uses. The presence or loss of
xDSL signal, and transmit rates of TLC-enabled lines are all shown via the existing Element
Management Systems (EMS).
Monitoring the 48V POTS Power
The presence of the standard
POTS ring voltage is monitored
using the telco’s standard
operating procedures.
Monitoring Line-by-Line xDSL
Circuits via Existing EMS
Any disruption of xDSL service –
whether at the DSLAM or at the
subscriber modem is
immediately alarmed and
identified line-by-line using the
telco’s existing EMS tools. If a
TLC line card fails, these alarms will indicate this outage but POTS will not be interruped.
Appropriate response is the standard copper maintenance practice.
TLC’s Standardized Quick-Swap Feature
Cross-connect fields are integral for all installations using the TLC metal cabinets. Standard
operating procedure includes one or two spare line cards pre-installed into these cabinets. Thus
recovery from a failed line card requires only a swap of the jumper block on the cross-connect to
migrate the subscriber to an operational TLC line card.
C) Advantages of the TLC Management Strategy
● Power-conservative, no added power equipment;
● No EMS training or new software required;
● No added IT investment or complex operations integration effort required;
● No operational impact outside of existing standard procedures;
● Makes installation and operation of TLC transparant to present methods of operation; and
● Fully compliant alarm and monitoring of active xDSL performance.



X. An itemized cost-comparison business case

This cost comparison was generated from a real world deployment in a 4 kft by 6 kft
customer service area (CSA) originally fed from a 198-line RT.

The objective is to
extend IPTV
service capable of
delivering 25 Mbps
high-definition IPTV
beyond the existing
3.5 kft distribution
area (DA) of the
original RT /
DSLAM.

This CSA serves
456 homes in an
upscale
neighborhood with
an anticipated take
rate of 65% for HD
IPTV. The goal is
to provide 300 new
VDSL2 service
ports serving 25
Mbps each.

This CSA was
originally supplied
by four copper
cable legs
extending from the
original RT. The
underserved area
beyond the original
HD-IPTV reach is
shown below in
yellow.



Present methods of service extension would require the installation of two new RT /
DSLAMs, each serving 25 Mbps out to 3.5 kft as shown below. The actual installation using
TLC augmentation used only one new RT / DSLAM plus twelve, 25-line TLC units.

The four copper legs
extending from the
original RT/ DSLAM are
shown by the orange
lines above. Shown in
red below are the 100-
pair cables that must be
either:

● Terminated and re-
homed to the new
DSLAMs

● New copper legs
installed to bridge the
new DSLAMs to the
existing cable runs
These new legs are
required to shorten
the loop length in the
DA to meet the 3.5 kft
VDSL2 design rule.

A key factor of TLC’s low installation costs is the lower labor and cable cost required to re-
home copper legs to new DSLAMs.

The cost significance of
this re-homing
requirement is two-fold.

1) The addition of new
100-pair copper legs
has risen 300-to-400%
as the price of copper
has climbed.

2) The labor required to
re-home the four
existing 100-pair legs is
a significant cost. Both
of these costs are
typically not fully
understood or
accurately tabulated
when considering new
RT installations.



PMO Costs
In the chart below, the line-item costs for present methods of operation (PMO) are tabulated
at right.

Two new RT / DSLAMs
require two new fiber
backhauls and
extensive copper re-
homing.

Both of these DSLAMs
also require a new
switchport to be
installed back at the
CO switch.

The total cost of labor
and materials for this
PMO installation is
$151,000.

TLC Costs
Shown below is the actual labor and materials cost required to install only one new
RT / DSLAM along with the appropriate TLC. The new DSLAM was provisioned with 153
VDSL2 ports while the original RT/ DSLAM was expanded with 130 additional VDSL2 ports.
New fiber backhaul is required, and the reduction in copper re-homing costs yields a $50k
cost savings.

When the total cost of the PMO installation is divided by the number of new subscribers
served, the PMO cost is $533 per subscriber versus only $353 for the TLC architecture. This
$180 per subscriber saving yields a faster time-to-payback with TLCs than present methods
of operation.



XI. About Phylogy

The genesis of Phylogy began in 2003 when two senior design
engineers were developing signal regeneration technology for
video applications over copper. Employing line boosting
modules at both the origination & destination terminals, they
realized that a single mid-line solution at half the cost could
provide similar advantages for xDSL optimization.

Together, Mr. Luis Larzabal, now Phylogy’s Chief Technology
Officer and Mr. Edward Ponganis, now Chief Product
Development Officer, initiated a classic Silicon Valley
technology incubator in their garage where they observed
incredible results at the breadboard level. Small-scale private
investments then moved this concept stage into early
prototyping focused on developing a low-power solution that
could operate on the POTS 48 volt supply commonly used in
telco networks.

The next few years were spent refining the circuitry, reducing
power consumption, and designing weatherized packaging and
circuitry refinement, and a leading RBOC provided early
guidance & product recommendations for optimizing TLC to
serve their emerging ADSL applications. Phylogy was
incorporated in 2004 and the following year attracted
professional management to lead the company and raise more
than $12M for R&D, product commercialization and marketing.
Phylogy recorded their first sales to IOCs serving long-reach
rural subscribers with ADSL.

TripleStream® was then optimized for ADSL2+ and large scale
volume production of TripleStream® Line Conditioners ramped
up in late 2006 in response to growing demand for extended
IPTV service reach among IOCs.

VDSL2 development began in 2007 with final
engineering focused on delivering the QoS improvement
required by leading telcos.

Finally, in support of the VDSL2 program, Phylogy is
currently cost-reducing the high-density cabinets that
will make large-scale VDSL2 deployments the most
cost-effective for IPTV service extension.



XII. Definition of Acronyms

ADSL Asynchronous Digital Subscriber Line, the most common DSL
ADSL2 Next Generation ADSL with longer reach
ADSL2+ Current Generation of ADSL with longest reach
ARPU Average Revenue per User,
average of all telco subscribers’ monthly payments
AWG Average Wire Gauge, thickness of the copper wire
CAPEX Capital Expenditure, all costs related to hardware & installation
CO Central Office, location of most telco equipment as compared to the RT
CO-fed Services being supplied directly from the CO instead of from an RT
CPE Customer Premises Equipment, the DSL modem in the subscribers’ home
CSA Customer Service Area, the entire subscriber area served by a telco
DA Distribution Area, the service area fed from a DSLAM based in CO or RT
DSL Digital Subscriber Line, common term for all xDSL
DSLAM Digital Subscriber Line Access Multiplexor, equipment that supplies DSL
EMS Element Management System
FTTH Fiber to the Home, more costly option to xDSL over existing copper wire
FTTN Fiber to the Node, hybrid option uses both fiber & existing copper wire
HD-IPTV High Definition IPTV, requires 6 to 8 Mbps of bandwidth
HDTV High Definition Television, requires 6 to 8 Mbps of bandwidth
IPTV Internet Protocol Television, TV supplied via telco’s using xDSL
IT Information Technology, computer & software support hardware & services
Kft One Thousand Feet
Mbps Megabits per Second, standard measure of bandwidth capacity
MS² Trademarked name of standard splice block made by 3M Company
NEXT / FEXT “Near End” and “Far End” Crosstalk, noise that reduces DSL bandwidth
OPEX Operating Expenditure, all costs related to ongoing operation & maintenance
PMO Present Method of Operation
PSD Power / Spectrum Density, map showing signal power of any DSL line
PSD MASK Power / Spectrum Density, map showing signal power of any DSL line
ROI Return on Investment, measure of profitability from an investment
RT Remote Terminal, a field cabinet containing telco electronic equipment
RT / DSLAM DSLAM equipment located in the field instead of the CO
RT-fed Services provided from an RT versus provided from the CO
SD-IPTV Standard Definition IPTV, requires 2 to 4 Mbps of bandwidth
SDTV Standard Definition Television – requires 2 to 4 Mbps of bandwidth
SNR Signal to Noise Ratio, higher SNR equals cleaner signal & higher bandwidth
TLC TripleStream Line Conditioner
VDSL2 Video Digital Subscriber Line, highest bandwidth version of DSL for video
xDSL Digital Subscriber Line, technical term referring to all possible types of DSL

Phylogy Corporate Offices
2350 Mission College Boulevard Suite 400 Santa Clara, CA 95054
866-PHYLOGY (866-749-5649) www.phylogy.com email: physales@phylogy.com


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