Safe Harbor Statement

1

Safe Harbor Statement

This presentation contains forward-looking statements within the meaning of the Private

Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by their use of terms and phrases such as “believe,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “should,” “plan,” “expect,” “predict,” “could,” “potentially” or the negative of these terms or other similar expressions and include statements concerning future financial and operating performance. The outcome of the events described in these forward-looking

statements is subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from the results anticipated by these forward-looking statements, including, but not limited to: the Company’s dependence on the success of

BroadWorks and on its service provider customers to sell services using its applications; claims that the Company infringes the intellectual property rights of others; the Company’s dependence in large part on service providers’ continued deployment of, and investment in, their IP-based networks; and the Company’s ability to expand its product offerings, as well as those factors contained in the “Risk Factors” section of the Company’s Form 10-K for the year ended December 31, 2011 filed with the SEC on February 29, 2012 and in the Company’s other filings with the SEC. All information in this presentation is as of June 7, 2012. Except as required by law, the Company undertakes no obligation to update publicly any forward-looking statement made herein to conform the statement to actual results or changes in the

BroadSoft, Inc.

BroadSoft ®, Inc. 2012 3

Service providers are transforming their business models through the delivery of IP-based applications

Providing innovative business and consumer

communications applications that enable

telecommunications service providers to monetize their

fixed and mobile broadband networks

Seasoned Team with Telecommunications

Expertise

President and CEO

Scott Hoffpauir

Chief Technology Officer

James Tholen

Chief Financial Officer

Craig Decker

VP, Sales EMEA

Jonathan Reid

VP, Sales APAC

Mary Ellen Seravalli

VP, General Counsel

Greg Callanan

VP, Sales Americas _{VP, Cloud R&D}Greg Pounds

Sam Hoffpauir

Market Trends Accelerating Opportunities

Growing awareness,

acceptance and

adoption of cloud-based

services by enterprises

Evolution of

communications

networks to IP and

broadband rollout

Explosion of smart

communication

devices

Opportunity to Win the End-User

Exceed expectations by providing a seamless

user experience for all communication

Service Provider Challenges & Advantages

Challenges

Declining average revenue

per user

Growing mobile network

build out costs

Scale Advantages

Customer – low cost of sale

Support – efficient & cost

effective

Network – quality of service for

differentiated services

BroadSoft ®, Inc. 2012 7

High-demand consumer and

business services

Unique branding opportunities on

desktops, smartphones and

tablets

Cost-effective delivery model

BroadSoft Value Proposition

Drives higher average revenue per

user

Increases customer retention

Strong financial return, which can

be reinvested in the business

Service Provider Market Offers

The breadth of our communications

applications enable service

providers to design offers that meet

the needs of each target market

9 Large Ent 1000+ Mid-market 100-1000 seats Small Business <100 seats Micro Business <10 seats Consumers BroadSoft ®, Inc. 2012

BroadSoft Solution SIP Trunking and Hosted Unified Communications

Target Market Small, Medium & Large Enterprise

Customer Large North American Competitive Carrier

Service Status Deployed

Value to Service Provider

Opportunity to extend product portfolio Address a new market segment

Why we Won Trusted partner relationship thanks to longevity

Product breadth

Fixed/Mobile convergence capability

BroadSoft ®, Inc. 2012

11

Carrier Case Study #2

BroadSoft ®, Inc. 2012

BroadSoft Solution Hosted Unified Communications

Target Market Small & Medium Enterprise

Customer Multi-country European carrier with fixed & mobile assets

Service Status In development; Q4 12 market introduction

Value to Service Provider

Comprehensive Unified Communications services to meet the wide-range of enterprise user needs

Why we Won Comprehensive Unified Communications services

User-interface integration

Carrier Case Study #3

BroadSoft Solution Full Hosted Unified Communications, including Call Center

Target Market Small, Medium & Large Enterprise & Call Center Vertical

Customer Asia Pacific incumbent carrier

Service Status Deployed

Value to Service Provider

Target market expansion

Why we Won Network cost savings

Extensive call routing capabilities

BroadSoft ®, Inc. 2010. 13

Consumer Fixed VoLTE Consumer VoLTE Enterprise Hosted UC SIP Trunking

$10B + Total Addressable Market

(5 Year Cumulative Outlook)

$8B per year PBX business1 _{migrating to}

hosted/cloud solutions

 Over 600m PBX/key system

connected phones

 Assume 25% penetration for hosted

voice

 Believe majority of remaining PBX

trunks move to IP/SIP by 2016

600M LTE subscribers by 20162

 LTE drives both consumer and

enterprise opportunity

1 _Infonetics

2_{Strategy Analytics}

Unified Communications Services 2014 Forecast

Reaches $8.6B

Enterprise Social Networking

Integrated/Team Collaboration Video Conferencing Web Conferencing Messaging (e-mail/IM/UM) IP Telephony Source: IDC

Large Opportunity for Further Customer Penetration

Remains

Customers in the Top 30

Significant Competitive Advantages

Alcatel

BroadSoft Lucent Ericsson NSN Huawei Metaswitch Genband Cisco Microsoft Carrier class scale/reliability

Full IMS Compliance

Interoperability across IMS cores

IMS/NGN seamlessness

PBX feature set

UC feature set

Interoperability/Openness

complementary client SW

Single platform for enterprise/consumer

Telecom regulatory compliance

BroadSoft Unique Advantages

Large addressable market in

early stage

Customers that have great

scale advantages

Outpacing competition

through product innovation

Our Technology

Our Vision

19

To provide innovative communications

applications that enable global

telecommunications service providers to offer

differentiated, competitive business and

consumer services

BroadSoft Core Communications Platform

Suite of complementary network software, cloud services &

user-experience applications

Focusing on the telecommunications service provider

market

Enabling innovative and incremental revenue-generating

communications services

BroadWorks is Central to the Breadth of our

Services

Carrier-grade infrastructure software hosted by the service

provider

 Proven scalability

 Five-nines reliability

 Broadest feature set

Standards Compliant/Future Proof – seamless integration with

next-generation networks

 IMS

 VoLTE

 SIP Connect

BroadWorks Solutions

Hosted PBX

 PBX functionality delivered from within the carrier network

 Includes features expected by businesses

– Calling, IVR, call centers, conferencing and unified messaging

 Solutions range from small-to-medium business to enterprise apps

SIP Trunking

 VoIP connection between a service provider and enterprise

 Next-generation connectivity for IP PBXs using SIP-based call control

 Extends cloud-based services to existing PBX customers; mobile extensions,

disaster recovery, bursting, etc.

Consumer

 Mobile VoLTE

BroadCloud Simplifies Service Delivery

Complementary Unified Communications applications hosted by

BroadSoft

Services branded and taken to market by our service provider

customers

Extends benefit of cloud/SaaS to carriers, in addition to end-users

 Rapid time-to-market

 Lower initial and operating costs for carriers

BroadCloud Services

Instant Messaging and

Presence

Web collaboration

Video conferencing

Text messaging

PacketSmart Quality of

Service Monitoring

BroadTouch Focuses on the User Experience

User experience for BroadWorks & BroadCloud

services



Consistent interface across smartphones, tablets,

laptops and desktops



Empower users to communicate using preferred service

anywhere at anytime

White-label strategy enables carrier to brand the user

experience

BroadSoft ®, Inc. 2012 25

BroadTouch Applications

Standalone and integrated services

applications

Enables fixed/mobile convergence



Calling, collaboration and messaging

services seamlessly moved between

devices

–

Smartphone to PC to tablet



Enables business identity on a user’s

Product and Technology Direction

Innovate in new growth areas



IMS/VoLTE; IMS Express



Expand Unified Communication services

Leverage cloud delivery model benefits for new,

innovative services



Extend to include BroadWorks functionality

Deliver an intuitive, seamless user experience for

all services, across all communication devices

Delivery Platforms

Expansion of Cloud Services

Key Industry Trends

Availability of abundant broadband

Acceptance of cloud services

Explosion of smart devices

Seamless user experience across devices

Our Strategic Elements

Xcelerate

Xtended

Devices

BroadSoft

Service Provider

BroadCloud

BroadWorks

BroadTouch

33

Financial Performance

Revenue ($mm)

Non-GAAP diluted EPS

$1.23 $1.22 -$1.321

$(0.43) $(0.18) $0.48

$133 -135

Non-GAAP diluted EPS $0.29 $0.18 _$0.38 $0.17-$0.231 BroadSoft ®, Inc. 2012. $0.38 $0.29 1_{Guidance as of 5/7/2012} 1 1 $30 $32 $36 $41 $38 $36-$38 Q1: 11 Q2: 11 Q3: 11 Q4: 11 Q1: 12 Q2: 12E $62 $69 $96 $138 $158-$162 2008 2009 2010 2011 2012E

2007 2011

Hosted UC SIP Trunking Consumer

24% 35% 31% 37% 0% 10% 20% 30% 40% 50% 60% 70% 80% 2007 2011 Tier 1 Tier 2/Cable

2011 Geography*

2011 Customer Diversity

BroadSoft Revenue/Billings Dynamics

Applications Mix*

** Hosted UC includes applications and other products

Customer Tiers* APAC 14% EMEA 24% Top 10 Customers 40% Other Customers 60% Americas 62%

* Based on Total Billings

Business Model Review

Primary Model: SW perpetual license fee + maintenance

BroadWorks traditional license model – majority of revs today

 Per-seat perpetual license

 ASPs vary greatly by end-market application

Success-based capital – can differ from traditional enterprise SW model

Most orders are shipped for revenue within the same quarter as

received

Maintenance & Services can fluctuate qtr-to-qtr from both revenue

recognition and professional services impacts

Small but growing SaaS component

Monthly recurring revenues

35

Common Investor Questions Following Q1

Does a decline in deferred revenue signal a lower quality

pipeline?

What are your expectations for deferred revenue going

forward?

What is your visibility today and how has it changed from

last year?

Why is Q2 opex going up and why is that not the correct

run-rate to use going forward?

Do you expect to see margin leverage in the near-term on a

y-y basis?

Vectors of Growth: 2011 View

Vectors of Growth: 2012 and Beyond

BroadCloud PBX Drives Additional Customer

Delivery Option

 Leverage own capital base at scale

 High and leverage-able margin model

BroadCloud PBX Model

 Limited capex investment  Pay-as-you-grow

 Faster go-to-market  Option to transition to

traditional model at scale

 Strong LT margins with limited initial margin impact

 Increases speed of time-to-market

 Expands universe of customers and projects  Provides revenue balance to traditional

BroadWorks model

 Preferred delivery model for new entrants

Carriers Choose:

OR

 High margin SW license revs plus recurring maintenance

 Embedded deeply into customer’s

backoffice BSS/OSS

Business Model Comparison:

Current Model vs Cloud Delivery

BroadSoft ®, Inc. 2010.

Current Model Cloud Delivery

Prototypical Mid-Size Carrier 3

Year Aggregate Revs $2.5m $3.0m+

Gross Margin Target 84-85% 70-80%

Long Term Profit Model

41

* 2011 excludes stock compensation of $7.2M and amortization expense of $1.3M. ** Q1:12 excludes stock compensation of $3.2M, amortization expense of $0.6M. Note: Figures may not sum due to rounding

BroadSoft ®, Inc. 2012. 2011 GAAP 2011 _Q1:12 GAAP Q1:12 Long Term Non-GAAP* Non-GAAP** Model

Gross Margin 82% 84% 79% 81% 82 - 85%

Operating

Expenses 62% 57% 66% 59% ~54 - 55%

Operating

GAAP / Non-GAAP Reconciliation

GAAP net income per diluted common share $ 0.13 $ 0.57 $ 0.26 $ 0.19 $ 0.06

Plus:

Adjustment for preferred stock conversion - - - - -Stock-based compensation expense 0.04 0.06 0.07 0.08 0.11 Amortization of acquired intangible assets 0.01 0.01 0.01 0.02 0.02 Non-cash interest expense on convertible notes - 0.01 0.04 0.05 0.05 Tax provision (benefit) related to valuation allowance

release/Non-cash tax provision 0.01 (0.36) - 0.04 0.05

Non-GAAP net income per diluted common share $ 0.19 $ 0.29 $ 0.38 $ 0.38 $ 0.29 For the three months ended

December 31, 2008 December 31, 2009 December 31, 2010 December 31, 2011

GAAP net (loss) income per diluted common share $ (1.81) $ (1.25) $ 0.32 $ 1.15

Plus:

Adjustment for preferred stock conversion 1.20 0.84 - -Stock-based compensation expense 0.16 0.19 0.12 0.26 Amortization of acquired intangible assets 0.02 0.04 0.04 0.05 Non-cash interest expense on convertible notes - - - 0.09 Tax provision (benefit) related to valuation allowance

release/Non-cash tax provision - - - (0.32)

Non-GAAP net (loss) income per diluted common share $ (0.43) $ (0.18) $ 0.48 $ 1.23 For the twelve months ended

NOTE: With respect to non-GAAP diluted EPS for the second quarter and full year 2012 appearing on slide 33, a reconciliation of estimated non-GAAP diluted EPS to GAAP diluted is not available without unreasonable efforts on a forward-looking basis due to the high variability, complexity and low visibility with respect to the charges that are excluded from these non-GAAP measures. In particular, the measures and effects of non-cash income taxes, which are extremely difficult to project as a result of our tax status in a number of foreign jurisdictions and stock-based compensation expense specific to equity compensation awards that are directly impacted by unpredictable fluctuations in our stock price. We expect the variability of the above charges to have a significant, and potentially