Investors

Glossary

4 A B C D E F G H I L M N O P Q R S T U V W Z

4

4G
4G is the fourth generation of cellular wireless standards. It is a successor to 3G and 2G standards, with the aim to provide a wide range of data services, with rates up to gigabit-speed Internet access for mobile, as well as stationary users

A

Adjusted EBITDA
Adjusted EBITDA is defined as earnings/(loss) from continuing operations before interest, income taxes, depreciation, and amortization (“EBITDA”) adjusted to exclude acquisition or disposal-related transaction costs, losses on extinguishment of debt, stock-based compensation, unrealized foreign currency gains/(losses) on intercompany loans, and non-cash income/(loss) on equity and cost method investments

Adjusted EBITDA Associated with Other Revenue
Adjusted EBITDA Associated with Other Revenue is calculated by subtracting Construction COGs and any other costs directly associated with Other Revenue from Other Revenue

Adjusted EBITDA Margin
Adjusted EBITDA for the period divided by total Revenue for the period

ADM
Add drop multiplexer optronics that allow for lower speed SONET services to be aggregated or multiplexed to higher speed SONET services. These optronics are used to provide SONET-based Bandwidth Infrastructure services over fiber

AFFO
Adjusted funds from operations (“AFFO”) is defined as earnings/(loss) from continuing operations before depreciation and amortization, unrealized foreign currency gains/(losses) on intercompany loans, stock-based compensation, acquisition or disposal-related transaction costs, losses on extinguishment of debt, non-cash income/(loss) on equity and cost investments, non-cash monthly amortized revenue, less cash payments related to maintenance capital expenditures

Annualized Growth
Where the annualized growth rate of various financial measures is presented, the percentage growth is calculated as the quarter over quarter growth rate multiplied by four

Average Remaining Contract Term
Where the average remaining contract term is equal to Revenue Under Contract divided by the sum of MRR and MAR on last day of quarter as well as MRR and MAR in the Service Activation Pipeline

B

Backbone
A major fiber optic network that interconnects smaller networks including regional and metropolitan networks. It is the through-portion of a transmission network, as opposed to spurs which branch off the through-portions

Bandwidth Infrastructure
Lit and dark bandwidth provided over fiber networks. These services are commonly used to transport telecom services, such as wireless, data, voice, Internet and video traffic between locations. These locations frequently include cellular towers, network-neutral and network specific data centers, carrier hotels, mobile switching centers, CATV head ends and satellite uplink sites, ILEC central offices, and other key buildings that house telecommunications and computer equipment. Bandwidth Infrastructure services that are lit (i.e., provided by using optronics that “light” the fiber) include SONET/digital signal, Ethernet and Wavelength services. Bandwidth Infrastructure services that are not lit are sold as dark-fiber capacity

Billable Colocation Square Feet
Usable square feet of colocation space available for sale in the Zayo colocation facilities

C

Capacity
The information carrying ability of a telecommunications service. Below is a list of some common units of capacity for bandwidth and colocation services:
• DS-0: A data communication circuit capable of transmitting at 64 Kbps
• DS-1: A data communication circuit capable of transmitting at 1.544 Mbps
• DS-3: A data communication circuit capable of transmitting at 45 Mbps
• OC-3: A data communication circuit capable of transmitting at 155 Mbps
• OC-12: A data communication circuit capable of transmitting at 622 Mbps
• OC-48: A data communication circuit capable of transmitting at 2.5 Gbps
• OC-192: A data communication circuit capable of transmitting at 10 Gbps

Capital Expenditure Pipeline
Capital expenditure pipeline includes capital projects that are currently committed, but have not yet been spent. Capitalized interest is not included in the capital expenditure pipeline

Carrier
A provider of communications services that commonly include voice, data, and Internet services

Carrier Hotel/Data Center
A secure physical site or building where data communications media converges and interconnects. The building contains many carriers, IXCs, and other telecommunications service providers that widely interconnect. These facilities generally have high-capacity power service, backup batteries and generators, fuel storage, riser cable systems, large cooling capability, and advanced fire suppression systems

Carrier Point of Presence
Carrier point of presence is a location in a carrier’s system where local access facilities connect to an interexchange carrier’s network

CATV
Community antennae television is cable television

CATV Head End
CATV head end is a master facility that receives signals it processes and distributes over a cable television system

CDN
Content distribution network is a system of computers networked together across the Internet that cooperate to deliver various types of content to end users. The delivery process is designed generally for either performance or cost

Cell Site
A site where antennae and electronic communications equipment are placed on a radio mast or tower to create a cell in a cellular network. A cell site is composed of a tower or other elevated structure for mounting antennae, and one or more sets of transmitter/receiver transceivers, digital signal processors, control electronics, a GPS receiver for timing (for CDMA2000 or IS-95 systems), regular and backup electrical power sources, and sheltering

Central Office
A facility used to house telecommunications equipment (e.g., switching equipment), usually operated by the ILECs and CLECs

Churn Percentage
Total MRR and MAR Churn for the quarter divided by Recurring Revenue (MRR and MAR) reported in the quarter

Churn Pipeline
Churn pipeline is the MRR for services for which a disconnect or negative re-rate order has been received for a future date and the service has not yet been re-rated or de-activated and removed from billing

Churn Processed
Any negative change to monthly recurring revenue or monthly amortized revenue. Churn processed is further divided into disconnects, negative price changes, and disconnects associated with upgrades. Churn processed does not include intercompany churn

CLEC
Competitive local exchange carrier provides local telecommunications services in competition with the ILEC

Cloud Computing
An Internet-based or intranet-based computing environment wherein computing resources are distributed across the network (i.e., the “cloud”) and are dynamically allocated on an individual or pooled basis, and are increased or reduced as circumstances warrant, to handle the computing task at hand

Colocation
The housing of transport equipment, other communications equipment, servers and storage devices within the same location. Some colocation providers are network-neutral, meaning that they allow the customers who colocate in their facilities to purchase Bandwidth Infrastructure and other telecommunications services from third parties. Operators of these colocation facilities sell interconnection services to their customers, enabling them to cross connect with other customers located within the same facility and/or with Bandwidth Infrastructure providers. Other colocation facilities are operated by service providers and are network-specific in that they require their customers to purchase Bandwidth Infrastructure and other telecommunications services from them

Colocation Cabinet Equivalents
The total number of cabinet equivalents available for sale in the Zayo Colocation facilities. The number is calculated by dividing billable colocation square feet by an assumed cabinet footprint of approximately 25 square feet

Colocation Percent Utilization
Utilized colocation cabinet equivalents divided by colocation cabinet equivalents

Conduit
A pipe, usually made of metal, ceramic or plastic, that protects buried fiber optic cables

Constant Currency Growth
Our constant currency growth metrics present the relevant information assuming a constant exchange rate between the two periods being compared. Such metrics are calculated by applying the currency exchange rates used in the preparation of the prior period financial results to the subsequent period results

Contract Value
MRR and MAR under contract multiplied by the remaining contract term in months. If a service’s remaining contract term is month-to-month, and requires that the customer provide 30 days notice to terminate service, then the contract value is equal to one month’s MRR or MAR. Contract value excludes intercompany revenue. Contract value excludes any MRR or MAR after 20 years

Contract Value of Gross New Sales (Bookings)
MRR and MAR for Gross New Sales (Bookings) multiplied by the contract term in months. Contract value excludes renewals and intercompany revenue. Where there is a price increase with a renewal, the contract value will show the incremental MRR from the price increase multiplied by the new contract term in months. Contract value excludes any MRR or MAR after 20 years

Customer Specific with Negative Payback Capital
Speculative capital, where the capital investment will be leveraged on future revenue opportunities. For example, optronics purchased in support of a customer contract where the term length is shorter than necessary to fully repay the capital expenditure. If the customer does not renew the contract, it is expected that the equipment would be redeployed to support other service revenue. Another example is outside plant expenditures made to extend the fiber network into a new location, where it is expected that future sales will leverage this investment

D

Data Center
Businesses that provide data center services including space, power, cross connects, and related technical support for themselves and others in standalone or shared facilities that may house other Data Center operators.

Data Center Operator
Business that own and operate data centers

Dark Fiber
Fiber that has not yet been connected to telecommunications transmission equipment or optronics and, therefore, has not yet been activated or “lit”

Dark Fiber Units
Dark fiber units are equal to dark fiber miles

Disconnects Associated with Upgrades
A disconnect is called an upgrade when one type of existing service is replaced with another higher bandwidth or higher priced service, where both services have the same location. Typically the service being replaced was purchased several years ago and has reverted to a month-to-month contract term and the new service is higher bandwidth and includes an extension of the term. The disconnect associated with an upgrade is included in churn processed

DS
Digital signal level is a measure of the transmission rate of optical telecommunications traffic. For example: DS-1 corresponds to 1.544 Mbps and DS-3 corresponds to 45 Mbps. See the prior definition of “Capacity”

DWDM
Dense wavelength-division multiplexing. The term “dense” refers to the number of channels being multiplexed. A DWDM system typically has the capability to multiplex greater than 16 wavelengths

E

Embedded Base Revenue Under Contract
Contract value for all actively billing services. Embedded Base Revenue Under Contract does not include intercompany services or amortized revenue

Employee Related SG&A
Employee Related SG&A includes wages, salaries, bonus, employee commissions and related taxes, benefits, travel and entertainment, cell phone, training, and recruitment costs. Employee related SG&A includes an adjustment to add back Capitalized Labor costs

Ethernet
Ethernet is the standard local area network (LAN) protocol. Ethernet was originally specified to connect devices on a company or home network as well as to a cable modem or DSL modem for Internet access. Due to its ubiquity in the LAN, Ethernet has become a popular transmission protocol in metropolitan, regional and long haul networks as well

F

Fiber Miles
Fiber miles are the number of route miles in a network multiplied by the number of fiber strands within each cable on the network. For example, if a ten mile network segment has a 24 count fiber installed, it would represent 10x24 or 240 fiber miles

Fiber Optics
Fiber, or fiber optic cables, are thin filaments of glass through which light beams are transmitted over long distances

FTT (Fiber-to-the-Tower)
FTT are projects that connect cell sites to the wider terrestrial network via fiber optic connections

FTT Market
FTT market is a distinct geographic area served by a Zayo FTT location

FTT Projects
FTT projects are shown in new sales (bookings) results as FTT projects that have a >12 month payback, typically associated with network expansion projects rather than increasing capacity to an existing tower on the Company‘ s network. FTT projects with <12 month payback are captured in the <12 month payback capital category

FTT Tenant
Service provided to a unique customer cabinet/shelter location at a tower

FTT Tower
FTT tower is a specific cell site served with fiber by the Company

G

Gbps
Gigabits per second is a measure of telecommunications transmission speed. One gigabit equals 1 billion bits of information

Government Stimulus Capital
Government stimulus capital is speculative capital in support of a government stimulus project where the government provides a grant that offsets a portion of the total project cost

Gross Installed Revenue
Gross Installed Revenue is the amount of MRR and MAR for services that have been installed, tested, accepted by the customer, and entered into the billing system in a given period. Gross Installed Revenue is further divided into new service, price increases, and upgrades. Gross installed revenue does not include intercompany installs

Gross New Sales (Bookings)
The dollar amount of MRR and MAR orders in a period that have been signed by the customer and accepted by service activation. The dollar value of a Gross New Sale is equal to the monthly recurring price that the customer will pay for the service or the monthly amortized amount of the revenue that the Company recognizes for that service. Gross new sales (bookings) does not include intercompany sales

Growth Capital
Capital expenditures related to obtaining new revenue. Growth capital is further stratified into success based capital and infrastructure capital

H

Hard Disconnects
Hard disconnects is churn processed where a service is disconnected without an associated replacement service

HDTV
High-definition television 

I

ILEC
Incumbent local exchange carrier is a traditional telecommunications provider that, prior to the Telecommunications Act of 1996, had the exclusive right and responsibility for providing local telecommunications services in its local service area

Increased Scope on previously Approved Projects
Capital expenditures to support increased scope or expense overruns on previously approved and reported capital expenditure commitments associated with gross new sales (bookings) reported in past quarters

Infrastructure Capital
Growth capital related to obtaining new revenue, but associated with general network capacity and not directly related with new sales (bookings)

Integration Capital
Capital expenditures related to projects resulting from integrating Zayo’s network with the networks of acquired properties

Interconnection Service
A service that is used to connect two customers who are located within a single building or within a single colocation space using either fiber or other means

Invested Capital
Invested capital is the amount of debt and equity deployed in the business. Equity is calculated based on the amount of member’s interest and excludes any accumulated loss or earnings. Debt is calculated on a net of cash basis and includes long term debt and capital lease obligations

Invested Capital Ratio
The ratio of invested capital divided by the annualized Adjusted EBITDA of the most recent quarter

IP
Internet protocol is the transmission protocol used in the transmission of data over the Internet

ISP
Internet service provider provides access to the Internet for consumers and businesses

IXC
Inter-exchange carrier is a telecommunications company that traditionally provided telecom service between local voice exchanges and intrastate or interstate (i.e., long distance) voice exchanges. Today, IXCs frequently provide additional services to their customers beyond voice including data and wireless Internet services 

L

Lateral/Spur
An extension from the main or core portion of a network to a customer’s premises or other connection point

Levered Free Cash Flow
Net cash provided by operating activities for the period minus capital expenditures for the period

Local Loop
A circuit that connects an end customer premise to a metropolitan network, regional network, or backbone network 

Local Serving Office
Local serving office is the NPA/NXX of the local or alternate serving central office of the customer location or primary location of the end user 

LTE Network
Long-term evolution network can be used to provide 4G cellular networks that are capable of providing high speed (greater than 100 Mbps) cellular data services 

M

Maintenance Capital
Capital expenditures related to preserving the existing network and embedded base of business

Market
A distinct geographic area served by Zayo’s fiber with add/drop capabilities

Mbps
A measure of telecommunications transmission speed. One megabit equals one million bits of information

Meet-Me Room
A physical location in a building, usually a data center or carrier hotel, where voice carriers, Internet service providers, data service providers, and others physically interconnect so that traffic can be passed between their respective networks. At any given colocation facility or data center, network owners may also be able to interconnect outside the Meet-Me Room

Mobile Switching Centers
Buildings where wireless service providers house their Internet routers and voice switching equipment

Monthly Amortized Revenue (MAR)
Revenue related to the amortized portion of install charges and IRUs. MAR does not include intercompany revenue or revenue from accounts that are believed to be uncollectible

Monthly Recurring Revenue (MRR)
Revenue related to an ongoing service that is generally fixed in price. MRR does not include intercompany revenue or revenue from accounts that are believed to be uncollectible

MPLS
Multi-protocol label switching is a standards-based technology for speeding up data services provided over a network and making those data services easier to manage

Multiplexing
An electronic or optical process that combines a large number of lower speed transmissions into one higher speed transmission 

N

Negative Price Change
Churn processed from existing services where the price was decreased. The incremental price change is counted in churn processed

Net AFFO
AFFO plus upfront customer payments from less than twelve month payback on net new sales less cash payments related to capital expenditures for (i) less than twelve month payback on net new sales and (ii) network capacity

Net Capital
Capital Expenditures for the period less additions to deferred revenue in the period

Net Install Pipeline 
Net install pipeline is the sum of the MRR and MAR for orders in the service activation pipeline and the churn pipeline 

Net Installed Monthly Recurring Revenue
The net change to MRR and MAR, equal to gross installed revenue less churn processed

Net New Sales (Bookings)
Gross New Sales (Bookings) less Cancellations of Gross New Sales (Bookings) 

Network Capacity Capital
Growth capital expenditures in support of capacity growth requirements on Zayo’s existing network backbone, not directly associated with specific customer sales

New Service
Gross installed revenue from new services 

NOC
Network operations center is a location that is used to monitor networks, troubleshoot network degradations and outages, and ensure customer network outages and other network degradations are restored   

O

OC
Optical carrier level is a measure of the transmission rate of optical telecommunications traffic. For example: OC-3 corresponds to 155 Mbps. See the definition of “Capacity”  

On-net building
A building on Zayo’s network with a fiber connection to someone other than the local ILEC

Opportunistic Network Expansions Capital
Speculative capital expenditures to support a network expansion in anticipation of future new sales (bookings)

Optronics
Various types of equipment that are commonly used to light fiber. Optronics include systems that are capable of providing SONET, Ethernet, Wavelengths, and other service over fiber optic cable

Other Capital
Capital expenditures not directly related to Zayo’s network. Other capital includes IT, furniture and fixtures, and other miscellaneous capital expenditures

Other Revenue
Other Revenue includes Credits and Adjustments; Termination Revenue; Construction Services; and Asset Sales (if any)   

P

Payback Period
The period of time (measured in months) in which the gross profit for a gross new sale is equivalent to the estimated capital expenditures and non-recurring network expense less non-recurring revenue related to that Gross New Sale. The payback period is an approximation of the return on a gross new sale and does not include sales costs, allocation of indirect operating expenses, depreciation and amortization, or any cost of capital 

POP
Point-of-presence is a location in a building separate from colocation facilities and data centers that houses equipment used to provide telecom or Bandwidth Infrastructure services 

PRI
Primary rate interface is a standardized telecommunications service level for carrying multiple DS-0 voice and data transmissions between a network and a user 

Price Decrease
Churn processed from existing services where the price was decreased

Price Decrease as a Percentage of Affected MRR/MAR
The percentage change between the old price and the new price, calculated by dividing the incremental negative price change by the old price 

Price Increase
Price increase is the gross installed revenue from existing services where the price was increased 

Price Increase as a Percentage of Affected MRR/MAR
The percentage change between the old price and the new price, calculated by dividing the incremental positive price change by the old price 

Q

Quota Bearing Headcount (QBHC)
Quota bearing headcount is an employee who is responsible for selling a target amount of new sales (bookings) per month 

R

Renewal
A renewal is an event where the contract is extended and the price does not change  

Revenue Commitment
MRR related to contractual obligations that customers have made to increase their purchased services on or prior to a future date or to maintain certain billing levels after the end of the initial contract term. Most Revenue Commitments are related to FTT and represent contractual obligations. Often, the customer has flexibility on the specific service and location which will satisfy the commitment 

Revenue Under Contract
The total contract value for all existing and committed services. Revenue under contract is further stratified into contract value associated with the embedded base, service activation pipeline, and revenue commitments. Revenue under contract excludes intercompany revenue and amortization of deferred revenue 

RLEC
Rural local exchange carrier is an ILEC that serves rural areas 

Route miles
Route miles are the length, measured in non-overlapping miles, of a fiber network. Route miles are distinct from fiber miles, which is the number of route miles in a network multiplied by the number of fiber strands within each cable on the network 

S

Service Activation Pipeline
The MRR and MAR associated with cumulative gross new sales (bookings) that have not yet become gross installed revenue (have not been activated or installed). Service activation pipeline does not include intercompany sales 

Service Orders
The MRR and MAR for signed customer orders for specifically defined services that are scheduled to be installed and billed on a future date. In the case of revenue commitments, when the service is specifically defined, it is reclassified from the revenue commitment category to the service order category 

SONET
Synchronous optical network is a network protocol traditionally used to support SONET/digital signal services. This protocol enables transmission of voice, data, and video at high speeds. Protected SONET networks provide for virtually instantaneous restoration of service in the event of a fiber cut or equipment failure 

SONET/Digital Signal
Dedicated private bandwidth that generally utilizes SONET technology and is used to connect various locations 

Speculative Capital
Growth capital expenditures associated with selective network extensions or geographic expansions in anticipation of better positioning Zayo for future sales. New colocation facilities or major colocation expansion would be categorized as Speculative Capital. In some cases an initial sale may help offset the expenditure. FTT projects are excluded from this category. Speculative projects are further stratified to include government stimulus projects, opportunistic network expansions, and customer specific (success based) with negative payback periods

Strategic Product Groups
The Company’s Strategic Product Groups (“SPGs”) are our primary decision-making and governance organizations. Strategic Product Groups are structured around the services that we provide and operate with a high degree of autonomy and financial responsibility. The Company’s SPGs are comprised of the following: Zayo Dark Fiber (“Dark Fiber”), Zayo Mobile Infrastructure Group (“MIG”), Zayo Colocation (“zColo”), Zayo Wavelengths (“Waves”), Zayo SONET Services (“SONET”), Zayo Ethernet Services (“Ethernet”), Zayo IP Services (“IP”), and Zayo Professional Services (“ZPS”)

Streaming
The delivery of media, such as movies and live video feeds, over a network in real time

Success Based Capital
Capital expenditures directly related to the acquisition of new sales (bookings) and includes projects that are stratified into <12 month payback projects, >12 month payback projects, and a subset of speculative projects

Switch
A switch is an electronic device that selects the path that voice, data, and Internet traffic take or use on a network 

T

Transport
A telecommunication service to move data, Internet, voice, video, or wireless traffic from one location to another   

U

Unit
Unit is a distinct service sold independent of the type of service (including capacity, location, etc.) Reported units do not include Fiber Miles 

Upgrade
Upgrades are gross installed revenue from existing services where one type of service is replaced with another higher bandwidth/typically higher priced service, where both services have the same location. Typically the service being replaced was purchased several years ago and has reverted to a month-to-month contract, and the new service is higher bandwidth and includes an extension of the term 

Utilized Colocation Cabinet Equivalents
Utilized colocation cabinet equivalents are the total number of occupied cabinet equivalents available in the Zayo Colocation facilities. The number is calculated by dividing the total occupied colocation space by an assumed cabinet footprint of 25 square feet 

V

VPN
Virtual private network is a computer network that is implemented as an overlay on top of an existing larger network 

W

Wavelength 
A channel of light that carries telecommunications traffic through the process of wavelength division multiplexing 

WiMax
Worldwide interoperability for microwave access. WiMax services can be used by 4G cellular networks that are capable of providing high speed (greater than 100 Mbps) cellular data services 

Z

Zayo Hut  
Zayo hut is a remote regeneration facility 

Zayo Point of Presence
Zayo point of presence is an access or demarcation point or interface point between communications entities