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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

FOR ANNUAL AND TRANSITION REPORTS
PURSUANT TO SECTIONS 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

(Mark One)

For the fiscal year ended December 31, 2001

OR

For the transition period from                              to                             

Commission file number: 000-27127

iBasis, Inc.

(Exact name of registrant as specified in its charter)

20 Second Avenue, Burlington, MA 01803
(Address of principal executive offices, including zip code)

(781) 505-7500
(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
None

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, $0.001 par value per share

(Title of Class)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-X is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o

The aggregate market value of the registrant's common stock, $0.001 par value per share ("Common Stock"), held by non-affiliates of the registrant as of March 15, 2002 was approximately $29,173,720 based on 38,905,294 shares held by such non-affiliates at the closing price of a share of Common Stock of $0.75 as reported on the Nasdaq National Market on such date. Affiliates of the Company (defined as officers, directors and owners of 10 percent or more of the outstanding share of Common Stock) owned 6,634,832 shares of Common Stock outstanding on such date. The number of outstanding shares of Common Stock of the Company on March 15, 2002 was 45,541,126.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive Proxy Statement to be delivered to stockholders in connection with the Annual Meeting of Stockholders to be held on May 22, 2002, are incorporated by reference into Part III hereof. With the exception of the portions of such Proxy Statement expressly incorporated into this Annual Report on Form 10-K by reference, such Proxy Statement shall not be deemed filed as part of this Annual Report on Form 10-K.

iBASIS, INC.

FORM 10-K
For the Year Ended December 31, 2001

This annual report on Form 10-K and the documents incorporated by reference contain forward-looking statements based on current expectations, estimates and projections about iBasis' industry and management's beliefs and assumptions. In some cases you can identify these statements by forward-looking words such as "anticipate," "believe," "could," "estimate," "expect," "intend," "may," "should," "will," and "would" or similar words. You should read statements that contain these words carefully because they discuss future expectations, contain projections of future results of operations or of financial position or state other "forward-looking" information. The important factors listed in the section captioned "Risk Factors," as well as any cautionary language in this annual report, provide examples of risks, uncertainties and events that may cause the actual results to differ materially from the expectations described in these forward- looking statements. You should be aware that the occurrence of the events described in these risk factors and elsewhere in this annual report could have an adverse effect on the business, results of operations and financial position of iBasis.

Any forward-looking statements in this annual report are not guarantees of future performance, and actual results, developments and business decisions may differ from those envisaged by these forward-looking statements, possibly materially. iBasis disclaims any duty to update any forward-looking statements, even if new information becomes available or other events occur in the future.

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PART I

Item 1.    Business

Company Overview

We are a leading provider of advanced Internet-based communications services that enable telecommunications carriers and other communications service providers to offer international voice, fax and other enhanced services that combine the flexibility and power of the Internet with the simplicity and ubiquity of the telephone. By outsourcing international communications services to us, our customers are able to lower costs, generate new revenue and quickly extend their business into Internet-based communications services while maintaining service quality comparable to that of traditional voice networks. In addition to our core business of providing international wholesale Internet telephony services, we also provide enhanced services, such as interactive voice response and customer service applications.

Industry Overview

Telecommunications Market Overview.    The international voice and fax traffic market is estimated to be worth more than US$70 billion; driven by increasing deregulation and increasing competition, international voice and fax traffic is expected to grow by over 15% in 2002, according to TeleGeography, a market research firm. Global deregulation combined with rapid technological advances has enabled the emergence of more affordable international service and led to the creation of many new communications service providers. In their efforts to remain competitive in this growing marketplace and focus their capital on the domestic services such as fixed-line, wireless, and cable that account for the most of their revenues, communications service providers are looking for ways quickly to expand their global footprint, while simultaneously reducing the disproportionate transport and support costs of providing international services. Increasingly the world's carriers are seeking to outsource international voice traffic to efficient voice over Internet Protocol or VoIP networks, such as The iBasis Network™, whose inherently lower infrastructure and transport costs can help improve a carrier's competitiveness and bottom line, without compromising service quality.

International Long Distance Market.    The international long distance market is a large and growing segment of the telecommunications market. According to TeleGeography international voice traffic grew over 21% from 1999 to 2000, reaching 132.7 billion minutes, while revenues grew more than 27% to US$70 billion. We believe that this growth will accelerate as countries around the world continue to deregulate their telecommunication markets.

Emergence of Internet Telephony.    Although it has been possible to transmit VoIP since 1995, only recently has the technology improved such that phone-to-phone calls can be transmitted over data networks with quality nearly indistinguishable from that of traditional voice networks. International VoIP traffic has grown rapidly; according to industry analysts TeleGeography, traffic grew from 1.6 billion minutes in 1999 to 5.3 billion in 2000, and was forecast to reach 10 billion for 2001. Today, more than 60% of the voice traffic on The iBasis Network is generated by Tier 1 carriers, the world's largest and most demanding carriers.

Some of Internet telephony's principal advantages include:

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Technological Efficiencies. Traditional voice networks use circuit-switching technology, which establishes dedicated lines between an originating and terminating point for the duration of a call. In contrast, Internet telephony is based on packet-switching technology. This technology completes a call by digitizing and dividing a speaker's voice into small packets that travel to their destination along lines carrying packets of other Internet traffic, in much the same way as email travels. By taking advantage of the gaps or silence in human conversation, packets from multiple calls or faxes can be carried over the same line simultaneously with data from other sources

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which results in a higher utilization of transmission lines than can be achieved with circuit-switching technology. Unlike circuit-switched traffic, data packets also can be compressed, which means that Internet telephony uses less bandwidth per call than traditional circuit-switched calling. Also, using a network of service facilities connected to the public Internet for transport is less costly than building a dedicated circuit-switched or IP network. Because of our use of this "light" infrastructure, iBasis is less vulnerable to shifts in voice traffic flows than are companies that have networks with large investments in point-to-point lines. Finally, the Internet telephony gateway equipment that is used to convert and route phone calls over the Internet is less expensive and requires less physical space in telecom facilities than traditional telecommunications equipment. As a result of all of these features and capabilities, traditional carriers' international phone calls can be completed by iBasis at a lower cost using Internet telephony. We believe that packet-switched networks, including the Internet, will allow other traditional services, such as teleconferencing, to be offered more cost-effectively as well.

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Economies of Scale. Internet telephony calls are carried over large and rapidly growing data networks. Carriers and businesses have spent billions of dollars to upgrade their data networks to accommodate dramatic increases in data traffic. According to TeleGeography, the total bandwidth used for data surpassed that used for voice in the United States long distance market in 1998. iBasis, as a consumer of IP bandwidth is a direct beneficiary of the increasing supply of IP bandwidth for international transport. As data networks continue to grow, communications service providers should benefit from greater economies of scale and be able to offer Internet-based services, such as Internet telephony, more cost effectively than services delivered over traditional voice networks.



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Opportunity to Bypass International Settlement Rates. Traditional international long distance calls are completed over international voice networks. These networks are often owned by government bodies or telecommunications carriers who charge settlement rates or tariffs for their use. Although these fees are being reduced or eliminated, international calls routed over the Internet bypass a significant portion of these fees, which further lowers the cost of completing such calls.



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Additional Channel for Carriers. The world's largest carriers regularly outsource their voice and fax traffic to add capacity during peak hours and to take advantage of low-cost, high-quality providers to particular destinations. Internet telephony offers an opportunity for service providers with access to the necessary VoIP technology to develop networks that can cost-effectively provide this additional capacity and provide lower cost, high quality service to many destinations.



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More Services and Easier Roll Out. In contrast to the closed, proprietary structure inherent in traditional circuit-switched voice networks, Internet telephony embraces an open architecture and open standards, which facilitates innovation at lower costs. Traditional voice networks have been designed specifically to provide one basic service, making it difficult to introduce new services over those networks. The data networks convert all services into data packets, and allow for the introduction of a wide and enhanced variety of packet-based services that were not possible over the traditional network. Since the rollout of new services does not require network-wide upgrades, it is easier for communications service providers to deploy new services quickly. While voice and fax are the dominant services provided today, additional services, such as Internet call-waiting, speech recognition-based phone applications, messaging and IP-based conferencing, can all be provided over data networks.

Outsourcing vs. Insourcing Internet Telephony services.    There are many reasons for telecommunications carriers and other communications service providers to take advantage of VoIP, and many are beginning to do so, carrying some portion of their voice traffic over IP networks. Despite the move by some large

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carriers to develop their own international VoIP infrastructures, carriers have been more interested in outsourcing international traffic to specialist providers such as iBasis. The reasons for the preference to outsource international traffic may include:

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the relatively low percentage of revenue that international service represents for many large carriers;



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the disproportionate cost and complexity of deploying and supporting international service infrastructure;



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prior substantial investment in circuit-switched networks and the associated expertise;



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a hesitation to build new networks and cannibalize traffic from their traditional voice networks; and



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concerns over sufficient in-house VoIP expertise to ensure that voice quality and network reliability are comparable to that of the public-switched telephone network.

Demand for Automated Customer Service Solutions.    Interactive voice response, which we refer to as IVR and speech recognition-driven applications enable enterprises to increase the capacity and efficiency of their customer service and call center resources. The principal advantages of automated customer service solutions include:

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reduced costs of handling customer inquiries through automated self-service;



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improved customer service through self-service; and



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enhanced routing of customers to specific areas of expertise based on customer responses to automated screening options.

The rate of growth in the IVR market moderated overall for 2001 as reported by International Data Corporation or IDC. Although ninety-percent of the market at year-end was composed of non-speech touch-tone applications, the rate of growth for speech technologies grew faster in 2001 than the total market. According to IDC, adoption of speech applications will continue to grow and is expected to overtake non-speech applications by 2005.

The lengthy sales cycle typically associated with procurements of automated customer service solutions combined with weakness in the U.S. economy may have adversely impacted purchases in the third and fourth quarters last year. We expect that demand for these phone-based customer service solutions should grow again as the U.S. economy recovers from recession and companies deploy automated solutions to reduce the costs of operating contact centers and simultaneously increase the level of "customer self-service." While the lengthy sales cycle for new customer procurements is expected to continue, we expect that 2001 early adopters of these solutions will deploy multiple speech applications in 2002.

iBasis Services and Solutions

As our core business, we provide Internet-based voice services to telecommunications carriers and other communications service providers. We also provide phone-based customer service solutions to carriers and enterprises.

iBasis wholesale international Internet telephony enables carriers and other communications service providers to outsource international voice and fax traffic, substantially lowering their transport and service support costs, without compromising quality. We provide our carrier customers access to The iBasis Network, our international Internet telephony network, through "Internet Central Offices" or "ICOs" and "Internet Branch Offices" or "IBOs" as described below under the section captioned "The

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iBasis Network," which are strategically located in major telecommunications hubs in the U.S., Asia, and Europe. Our services provide the following key benefits to our customers:

High Quality Voice and Fax Transmissions.    Our network, monitoring and management technologies enable us to complete international voice and fax calls with quality comparable to that of traditional circuit-switched voice networks. This high quality is reflected by the fact that carriers choose to provide our Internet telephony services to their customers undifferentiated from their traditional services. At our 24x7, expert-staffed global Network Operations Centers which we generally refer to as NOCs in Burlington, Massachusetts, USA and Hong Kong, we are able to monitor our carrier customers' voice traffic and ensure service quality indistinguishable from that of traditional networks. Using our technologies, we route international traffic over multiple Internet backbones, completing calls on our partners' phone networks in destination countries.

Cost Effective Solutions.    Our call transport costs are lower because packet switching is more efficient than traditional circuit-switching. In addition, because we use the Internet, rather than a managed IP network, to deliver international voice traffic, we have greater infrastructure flexibility and lower costs than service providers that employ dedicated point-to-point connections. In addition, VoIP equipment is less costly and has lower facilities costs (due to its smaller physical footprint) than equivalent capacity circuit-switched equipment. We offer an open, scalable architecture that enables carriers and communications service providers to connect within a short period of time and without heavy investment or special expertise. Finally, we are currently able to bypass many of the international tariffs or settlement rates associated with some international traffic carried over circuit-switched voice networks, which produces additional cost savings.

Enhanced Services.    Our technology also enables us to offer other enhanced services that can provide significant cost savings, or generate additional revenue. Through iBasis Speech Solutions, our wholly-owned, Reston, Virginia subsidiary, we enable automation of both routine and unique customer care activities of organizations ranging from large enterprises to small and mid-sized businesses. Our services are offered on an outsourced basis to clients in a wide variety of vertical markets including telecommunications and financial services. Specifically, we develop and host interactive voice response and speech driven, phone-based applications for our customers. These types of services for enterprises and carriers can increase revenues and enhance customer loyalty and satisfaction with automated, phone-based customer self-service applications that the consumer can control. The solutions we develop run on our iPort™ and SpeechPort™ platforms, as hosted applications. iPort provides touch-tone IVR solutions. SpeechPort supports rapid application development with speech recognition, text-to-speech, and extensive back-end integration capabilities. Because the applications are mission-critical and are likely to be invoked any time of day or night, rigorous operational support is essential for spike or high-volume steady-state traffic. Our network operations control center in Reston, Virginia oversees 24x7 availability and ensures service level agreements are met. Redundancy is provided by facilities located in St. Louis, Missouri, and a third site in Miami, Florida, which was opened in 2001.

The iBasis Network

The iBasis Network is our growing international network, over which we deliver large volumes of high quality international voice, fax and other enhanced services at significant cost savings to our customers. At year-end 2001 there were approximately 620 Points of Presence, which we generally refer to as PoPs in more than 80 countries and we transported more than 1.4 billion minutes of traffic over our network—making iBasis, according to global traffic statistics in the industry analyst publication TeleGeography 2002, one of the twenty largest carriers of international traffic in the world. The iBasis Network consists of four principal elements:

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ICOs and IBOs that convert circuit-switched voice traffic into data for transmission and reception over the Internet or vice versa;

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the transmission medium, which is principally the Internet;



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Assured Quality Routing®, our proprietary traffic monitoring and routing management software; and



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our NOCs from which we oversee and coordinate the operation of the ICOs and IBOs.

Internet Central Offices and Internet Branch Offices.    Our customers can interconnect with our network by connecting dedicated voice circuits from their facilities to one of our strategically located ICOs, which are located in: Amsterdam; Frankfurt; Hong Kong; London; Los Angeles; Miami; New York; Paris; Singapore; and Tokyo. Alternatively, our customers may elect to install an iBasis IBO directly at their facilities. IBOs are scaleable and flexible platforms built primarily using Cisco Systems' equipment and optimized for interconnection with The iBasis Network. IBOs receive calls directly from a local carrier's switched network. VoIP gateways in each IBO digitize, compress and packetize voice and fax calls and then transmit them over the Internet. At the destination, another IBO reverses the process and the call is switched back from the Internet to a local carrier's circuit-switched network in the destination country. The relatively small size and low cost of IBOs allows us to increase capacity, quickly, efficiently and in discrete increments. In addition, the IBO architecture is designed to easily integrate and support new communications services on our global network.

The Internet.    Because of its global coverage, rapid growth and flexible connectivity, we use the Internet to transmit the substantial majority of our voice and fax traffic. Because we use the Internet as the primary transport for our international VoIP service, we do not need to build a private, dedicated network of fiber and cable connections, which would delay our time to market in many locations and would be more costly to deploy. In addition, because we do not have fixed, point-to-point connections, we can adjust rapidly and at minimal cost to changes in international traffic flows. We have addressed the challenges of using the Internet for high quality, real-time voice communications by:

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selecting only high quality, service-oriented Internet service providers as our vendors;



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purchasing multiple, high-speed connections into the Internet backbone; and



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continuously monitoring the quality of the connections between our PoPs and the Internet.

We also use data transmission over private leased lines or traditional circuit-based voice networks in situations where the Internet is either not available or would not permit us to meet our quality standards.

Assured Quality Routing.    We have deployed a proprietary software system, Assured Quality Routing, which we refer to as AQR to maintain high quality voice and fax service. This application monitors the quality of calls placed over our network by applying defined quality parameters to each processed call. These quality parameters include measures of voice and fax quality that are important to carriers including overall voice quality, call completion rates and post-dial delay. The system alerts us whenever the transmission quality drops below specific thresholds, enabling us to temporarily route subsequent calls to a circuit-switched network or an alternate Internet-based network to restore high quality.

Global Network Operations Centers.    We manage our network and implement our proprietary Assured Quality Routing software through our NOC's. Our NOCs use leading network management tools from Hewlett-Packard and a number of other vendors, which are integrated with our AQR systems to enable us to monitor, test and diagnose all components of The iBasis Network. Our NOCs are staffed by network and traffic engineers 7 days a week, 24 hours a day, every day of the year, and are equipped with:

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end-to-end monitoring and analysis of call behavior patterns on The iBasis Network to identify and address potential network problems before they affect our customers, as well as to anticipate traffic congestion and issues related to network growth;

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system redundancy, including power back-up and multiple network paths; and



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a help desk that allows us to respond quickly to our customer's needs and concerns.

Our Services

In 2001, our services included international voice and fax call completion, unified messaging, interactive voice response applications and phone-based customer service solutions through SpeechPort, our hosted Application Service Provider, or ASP environment. In March 13, 2002, we exited our unified messaging business by selling assets and transferring expenses related to this line of business to Call Sciences, Inc., an international company that develops and markets unified communications solutions.

International Internet Telephony.    Through The iBasis Network, we offer wholesale international Internet telephony services that provide carriers a high-quality, low-cost alternative for transport of international phone-to-phone or fax-to-fax calls placed by their business and residential customers. We guarantee call completion rates that are equivalent to or better than with alternative networks, including the public-switched telephone network through Service Level Agreements. Our customers can receive accurate reporting information that identify service issues and improve their traffic routing planning with our iTrac web based-traffic reporting service.

Phone-based Customer Service Solutions.    From our application service provider environment called SpeechPort, we support large or multiple, geographically-dispersed contact centers. Our products and services include:

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Call routing to language-specific automated applications or to skilled labor pools based on origin of caller;



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Information delivery such as frequently asked questions or nearest retail location; and



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Business transaction processing such as determining order status or selecting a service accompanied by verification procedures.

Future Services.    We intend to add new services that leverage components of The iBasis Network to generate additional sources of revenue. We believe that our ability to deploy new Internet-based communication services makes us an attractive partner for carriers that want to leverage our global footprint to provide cost-efficient access to voice services, such as conferencing.

Markets and Customers

Internet Telephony

Telephone companies can be segregated by size into Tier 1, Tier 2 and Tier 3 carriers. Generally, Tier 1 carriers are large domestic and international carriers, such as AT&T, WorldCom, Sprint, Cable & Wireless, and certain government-affiliated dominant carriers, such as the Japanese telecommunications carrier KDD. Tier 1 carriers generally have annual revenues in excess of $2 billion. Tier 2 carriers have revenues generally in the range of $750 million to $2 billion, but have fewer direct operating agreements with other carriers and fewer international facilities. Tier 3 carriers are typically switch-based resellers with revenues of less than $750 million.

The majority of traffic carried over The iBasis Network is from Tier 1 and 2 carriers in the United States. As of December 31, 2001, Tier 1 carriers generated more than 60 percent of our international traffic. The ability to provide quality call completion consistently acceptable to Tier 1 carriers is of vital importance because these carriers control the vast majority of the world's commercial and retail traffic. Tier 1 carriers will continue be a main area of focus for our sales force.

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Overseas, we have established relationships with foreign companies and local service providers that have strong local market expertise and relationships. Some of our overseas partners/customers are very large, well-established national carriers. Others are emerging carriers or Internet service providers who are able to provide the services necessary to terminate minutes for us in their country. During 2001, we also experienced significant increase in the volume of traffic originated from overseas carriers, which generally produces higher margins than US-originated traffic. As of December 31, 2001, iBasis provided services to more than 150 carriers worldwide and only one carrier, Qwest Communications, accounted for more than 10 percent of our sales revenues. For further discussion of our revenues related to customers in other countries and other geographic information, please refer to note 8 to our consolidated financial statements.

Speech Solutions

Our wholly-owned subsidiary, iBasis Speech Solutions, formerly known as PriceInteractive, Inc., has deployed complex customer care applications for carriers and Fortune 500 companies including Sprint, AT&T, MCI WorldCom, H&R Block, and Western Union. We developed and host applications designed to increase efficiency by automating phone-based customer interactions through interactive voice response, automatic speech-recognition and touch-tone technologies. Our customers look for the flexibility and scalability of our open, hosted call center solutions, delivered via SpeechPort, that outsource support responsibilities and concentrate resources on other customer service tasks. As of December 31, 2001, iBasis Speech Solutions provided services to more than 40 customers and for over 160 applications.

Sales and Marketing

Sales Strategy.    Our sales efforts for Internet telephony target leading telecommunications carriers both in the United States and overseas. Our sales effort for Speech Solutions targets carriers and enterprises in the United States. Our sales force is composed of experienced personnel with well-established relationships in the telecommunications industry and, for Speech Solutions in Fortune 500 enterprises. In the United States, we sell directly to carriers and have successfully developed wholesale brand-awareness in that target market and have built beneficial relationships through numerous channels including our Website, trade shows, speaking engagements and joint marketing programs. For our Internet telephony business, our sales process often involves a test by our potential customers of our services in which they route traffic over our network to a particular country. Our experience to date has been that once a carrier has begun to use our network for a single country and finds our quality to be acceptable, the sales process for increasing the volume of traffic they send to us and growing the number of destinations for which they use our network becomes easier. In our Speech Solutions business, the sales process often involves a trial agreement or demonstration. In many instances, we find that the customer will request that additional applications be developed after the customer has experienced the cost and time savings generated through the first application.

In overseas markets, we seek to establish relationships with service providers that have the local market expertise to provide the termination services we need. We believe that our ability to terminate a substantial number of minutes through these local service providers makes us an attractive partner. We also offer licensed international carriers in overseas markets the opportunity to benefit from the favorable economics of Internet telephony by sending their international long distance traffic over The iBasis Network for transport and termination in other countries. This "overseas origination" represents a significant opportunity for revenue growth that is distinct from the growth in traffic from U.S.-based carriers.

We have offices providing sales coverage in Europe, Africa, the Middle East, Latin America, the Caribbean, the Asia-Pacific region, and North America.

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Marketing Strategy.    Our marketing strategy includes public relations campaigns, outreach to and interaction with industry analysts, participation in industry trade shows and conferences, speaking at regulatory policy conferences, and a comprehensive Website at www.ibasis.com. We have engaged public relations firms in North America and other regions of the world that help us conduct campaigns that support our positioning as the preeminent provider of Internet-based voice services. We aggressively pursue favorable coverage in the trade and business press and place executive speakers at and participate in a variety of industry trade shows and conferences, including Voice on the Net, The Financial Times telecommunications conferences, The Economist telecommunications conferences, International Telecommunications Union events, Call Center and Customer Relationship Management, or CRM trade shows, The Telephone Voice User Interface Conference, and other focused sales, marketing and industry events. We believe our Website will continue to be an effective marketing tool in both domestic and international markets.

Strategic Technology Relationships

We have entered into strategic technology relationships with a number of leading technology providers in the Internet telephony and speech recognition industry, including Cisco Systems and SpeechWorks International. These strategic technology relationships are important because they give us early access to new technologies and because our strategic relationship partners engage with us in joint sales and marketing programs.

Cisco Systems

Since its founding in 1996, iBasis has maintained a strong, strategic technology and business relationship with Cisco Systems. iBasis is the largest international Cisco Powered Network™ for Internet telephony. This designation means that The iBasis Network is built end-to-end with Cisco products and technologies, and meets a high standard of reliability and performance. As a Cisco Powered Network, we have access to Cisco technical resources and are able to more quickly deliver new capabilities and service features, in response to market demand. We regularly engage in numerous early field trials of Cisco VoIP technologies, during which we gain extensive experience with advance service solutions before they reach the general marketplace. We also conduct joint sales and marketing activities with Cisco. Our management team meets regularly with Cisco executives at Cisco's Executive Briefing Center. iBasis is a founding member of Cisco's Service Carrier Community, a new program that helps connect us to potential development opportunities with other VoIP carriers.

SpeechWorks International

SpeechWorks International is a leading developer of speech recognition software. We use SpeechWorks' speech recognition "engines" to build some of our phone-based customer service solutions. As a tier one partner, we participated in joint sales and marketing efforts with SpeechWorks. In 2001, our collaboration included a new seminar series featuring representative company spokespeople and joint customers that was piloted in the southeast and midwest.

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Competition

As described more completely in the section captioned "Risk Factors," the market for international voice and fax call completion services is highly competitive. We face competition from a variety of sources including large communications service providers with more resources, longer operating histories and more established positions in the telecommunications marketplace, some of whom have begun to develop Internet telephony capabilities. We also compete with small companies who have focused primarily on Internet telephony or phone-based applications. We believe that we compete principally on quality of service, price and bandwidth.

Telecommunications Companies and Long Distance Providers.

Large carriers around the world carry a substantial majority of telecommunications traffic. Many of these carriers, such as British Telecom, Cable & Wireless, and Deutsche Telekom, have started to deploy packet-switched networks for voice and fax traffic. These carriers retain substantial resources and have large budgets available for research and development. In addition, several companies have continued to build fiber optic networks, primarily in the United States, for Internet telephony traffic. These networks can be expected to carry voice and fax and may expand their services into international markets.

The nature of the telecommunications marketplace is such that carriers regularly buy and sell traffic to each other. Major carriers have multiple routes to virtually every destination, and frequently buy and sell traffic based on their relative strength and capacity to a particular country. We have relationships with many of these carriers and have carried traffic for them in the past. We expect to continue to exchange traffic with many of these companies in the future, even as they begin to devote more resources to competing in the Internet telephony market.

Internet Telephony Service Providers

A number of companies have started Internet telephony operations in the last few years. ITXC sells wholesale international VoIP service and competes directly with us. Other Internet telephony companies, including Genuity, are currently focused primarily on the retail market and PC-based consumer Internet telephony, but may compete more directly with us in the future.

Speech-Enabled Solutions Providers

iBasis Speech Solutions' primary competitors are traditional interactive voice response and speech recognition-based application providers that offer in-house (rather than outsourced) customer service solutions. In addition, there are ASPs, new entrants and business-to-consumer portals attempting to provide enterprises with speech-enabled services.

In addition to the direct competitors described above, iBasis Speech Solutions faces potential competition from several other types of businesses that may enter or border on the speech ASP space. These include (1) mainstream application service providers that may convert into the communications or Speech ASP space and (2) other specialized ASPs, such as Internet telephony ASPs, or application roll-up ASPs, that may enter the speech market. Internet data center companies as well as hosting companies could either forward-integrate by incorporating Speech ASP offerings similar to iBasis Speech Solutions' or by forming strategic alliances with competitive entities.

Finally, there are a number of startup companies offering voice portals. These companies do not compete with iBasis Speech Solutions directly, but rather with some of its customers, as they provide a focused and integrated speech, content and E-commerce service.

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Government Regulation

Domestic Regulation of the Internet and Internet Telephony.    We believe that under United States law, the Internet-related services that we provide constitute information services, rather than telecommunications services. As such, our services are generally not regulated by the Federal Communications Commission or state agencies responsible for regulating telecommunications carriers. However, aspects of our operations not wholly related to the Internet may be subject to state or federal regulation such as regulations governing licensing, universal service funding, confidentiality of communications, copyright and excise taxes. In addition, several efforts have been made to enact federal legislation that would either regulate or exempt from regulation services provided over the Internet. Although we have an advocacy program that endeavors to block these efforts, we cannot assure you that one or more of the services we provide will not be regulated in the future. Increased regulation of the Internet may slow its growth by negatively impacting the cost of doing business over the Internet. This would materially adversely affect our business, financial condition and results of operations.

We also cannot assure investors that Internet telephony will continue to be lightly regulated by the FCC. Although the FCC has determined that, at present, information service providers, including Internet telephony providers, are not telecommunications carriers, we cannot be certain that this position will continue. If the FCC determines that Internet telephony is subject to regulation as a telecommunications service, it may subject providers of Internet telephony services to traditional common carrier regulation and/or require them to make universal service contributions and pay access charges where they do not already pay the same through terminating providers. It is also possible that the FCC will adopt a regulatory framework for Internet telephony providers different than that applied to traditional common carriers. Finally, Congressional dissatisfaction with the FCC's conclusions regarding Internet telephony could result in legislation requiring the FCC to impose greater or lesser regulation. Any change in the existing regulation of Internet telephony by the FCC or Congress could materially adversely affect our business, financial condition and results of operations.

In addition to the FCC and Congress, the Office of Foreign Asset Control of the U.S. Department of the Treasury, or OFAC, administers the United States' sanctions against certain countries. OFAC rules restrict many business transactions with such countries and, in some cases, require that licenses be obtained for such transactions. We may currently, or in the future, transmit telecommunications between the U.S. and countries subject to U.S. sanctions regulations and undertake other transactions related to those services. We have undertaken such activities in reliance on our good faith interpretation of the sanctions regulations. We cannot assure you that OFAC will agree with our interpretation or position. We have received licenses from OFAC to send traffic to some countries and have contacted OFAC with regard to other transactions, and are in the process of seeking approval, if necessary, for any such transactions.

Our prepaid international calling card services are offered to international carrier customers, some of which provide these services to end-user customers, enabling them to call to their home countries over The iBasis Network when traveling in the U.S. Although the calling cards are not marketed or intended for domestic interstate or intrastate use, we have not blocked the ability to place such calls or required our wholesale customers to show evidence of their compliance with United States and state regulations. As a result, there may be incidental domestic use of the cards. Domestic calling may employ transport and switching that is not connected to the Internet and, therefore, may not enjoy the lighter regulation to which our Internet-based services are subject. Because we are a wholesale carrier, we do not believe that we are subject to federal or state regulation for the possible uses of these services described here and, accordingly, we have not obtained state licenses, or filed state or federal tariffs, or undertaken other possible compliance steps. There can be no assurance that the FCC and state regulatory authorities will agree with our position. If they do not, we could become subject to regulation at the federal and state level for these services, and could become subject to licensing and bonding

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requirements, and federal and state fees and taxes, including universal service contributions and other subsidies.

The FCC also requires all calling card service providers that enable users to place toll-free calls from payphones in the United States to compensate the payphone operator for each call placed from a payphone. Future change in FCC payphone compensation rules and/or the failure of a company that provides toll-free numbers to us to compensate payphone companies could affect our revenues.

International Government Regulation of the Internet and Internet Telephony.    We provide our Internet telephony services throughout the world. The regulatory treatment of Internet telephony and other iBasis services varies widely among countries and is subject to constant change. Until recently, most countries either did not have regulations addressing Internet telephony or other VoIP services such as calling cards, in some cases, classifying these services as unregulated enhanced services. As the Internet telephony market has grown and matured, increasing numbers of regulators have begun to reconsider whether to regulate Internet telephony and other VoIP services. Some countries currently impose little or no regulation on Internet telephony or VoIP services, as is the case with the United States. Conversely, other countries that prohibit or limit competition for traditional voice telephony services generally do not permit Internet telephony or VoIP services or strictly limit the terms under which such services may be provided. Still other countries regulate Internet telephony and VoIP services like traditional voice telephony services, requiring Internet telephony companies to obtain licenses, incorporate local subsidiaries, make universal service contributions and pay other taxes. We have advocated and supported deregulation for free and open market competition in a variety of countries. The varying and constantly changing regulation of Internet telephony and VoIP in the countries in which we currently provide or may provide services may materially adversely affect our business, financial condition and results of operations.

In addition, as we expand into additional foreign countries, such countries may assert that we are required to qualify to do business in the particular foreign country, that we are otherwise subject to regulation, or that we are prohibited from conducting our business in that country. Our failure to qualify as a foreign corporation in a jurisdiction in which we are required to do so, or to comply with foreign laws and regulations, would materially adversely affect our business, financial condition and results of operations, including by subjecting us to taxes and penalties and/or by precluding us from, or limiting us in, enforcing contracts in such jurisdictions. We cannot be certain that our customers and partners are currently in compliance with regulatory or other legal requirements in their respective countries, that they will be able to comply with existing or future requirements, and/or that they will continue in compliance with any requirements. The failure of our customers and partners to comply with these requirements could materially adversely affect our business, financial conditions and results of operations.

Finally, regulators may be influenced by the International Telecommunications Union, or the ITU, an international organization that addresses telecommunications matters. Although it generally promotes deregulation and open telecommunications markets, the ITU has not taken any action in favor or against Internet telephony. In fact, certain ITU-member countries advocate for full regulation of Internet Telephony. In the past ITU has recommended settlement procedures, technical requirements, and other issues for the international community. The ITU may promote policies that result in changes in national or international regulations dealing with financial compensation for international Internet traffic that could affect certain of our costs.

Intellectual Property

We regard our copyrights, service marks, trademarks, trade dress, trade secrets, patents, patent applications and similar intellectual property as critical to our success and we rely on trademark and copyright law, trade secret protection and confidentiality and/or license agreements with our employees,

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customers, partners and others to protect our proprietary rights. We intend to rely on patent law and confidentiality and/or license agreements with our employees, customers, partners and others to protect our proprietary rights in such patents and patent applications. We have filed several patents for The iBasis Network, SpeechPort, and other inventions related to our business. We pursue the registration of our trademarks and service marks in the United States and overseas. We have been granted trademark registration for the marks iBasis and Assured Quality Routing in the United States, and have pending registration applications for other service marks.

Employees

As of December 31, 2001, we had 441 full-time employees. Our employees are not represented by a labor union and we consider our relations with our employees to be good.

Item 2.    Properties

We currently lease the following facilities:

We have obtained collocation space in special facilities around the world that are dedicated to housing equipment of multiple competitive telephony carriers. We lease these smaller spaces to house Internet routing and related equipment or for back-up platforms for our Speech Solutions business. We lease collocation space in Amsterdam, Frankfurt, Hong Kong, London, Paris, Singapore, Tokyo, St. Louis, Missouri and Ashburn, Virginia. We also rent smaller office space in London and Beijing. We believe that our existing facilities are adequate for our current needs and that suitable additional or alternative space will be available in the future on commercially reasonable terms.

Item 3.    Legal Proceedings

We are a currently a party to the following potentially material legal proceedings:

Beginning August 1, 2001, we were served with several class action complaints that were filed in the United States District Court for the Southern District of New York against us and several of our officers, directors, and former officers and directors, as well as against the investment banking firms that underwrote our November 11, 1999 initial public offering of common stock and our March 9, 2000 secondary offering of common stock. The complaints were filed on behalf of persons who purchased our common stock during different time periods, all beginning on or after November 10, 1999 and ending on or before December 6, 2000. The complaints are similar to each other and to hundreds of

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other complaints filed recently against and other issuers and their underwriters, and allege violations of the Securities Act of 1933 and the Securities Exchange Act of 1934 primarily based on the assertion that there was undisclosed compensation received by our underwriters in connection with our public offerings. The plaintiffs are seeking an as-yet undetermined amount of monetary damages in relation to these claims.

Although neither iBasis nor the individual defendants have filed answers in any of these matters, iBasis believes that it and the individual defendants have meritorious defenses to the claims made in the complaints and intends to contest the lawsuits vigorously. However, we cannot assure you that we will be successful in such a defense. In addition, even though we have insurance and contractual protections that could cover some or all of the potential damages in these cases, or amounts that we might have to pay in settlement of these cases, an adverse resolution of one or more of these lawsuits could have a material adverse affect on our financial position and results of operation in the period in which the lawsuits are resolved. Given the early stage of the proceedings, we are not presently able to estimate potential losses, if any, related to the lawsuits.

Item 4.    Submission of Matters to a Vote of Security Holders

None.

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PART II

Item 5.    Market for the Registrant's Common Equity and Related Stockholder Matters

Market Information

Our common stock began trading publicly on the Nasdaq National Market on November 10, 1999 and is traded under the symbol "IBAS." The following table shows the range of the high and low per share prices of our common stock, as reported by the Nasdaq National Market for the period indicated.

Holders

As of March 15, 2002, there were 278 stockholders of record. This does not reflect persons or entities who hold their stock in nominee or "street" name through various brokerage firms. Based on our solicitation of proxies in May 2001, we estimate that there are approximately 15,000 holders of iBasis stock.

Dividends

iBasis has never declared or paid cash dividends on its common stock. iBasis intends to retain all future earnings to finance future growth, and, therefore, does not anticipate paying any cash dividends in the foreseeable future.

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Item 6.    Selected Financial Data

The following historical selected financial information of iBasis is qualified by reference to, and should be read in conjunction with, the consolidated financial statements and related notes included elsewhere in this document.