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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

For the quarterly period ended September 30, 2011

OR

For the transition period from             to             

Commission File Number 000-21771

West Corporation

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (402) 963-1200

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  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

At October 24, 2011, 87,854,914.6480 shares of the registrant’s Class A common stock and 9,971,656.8310 shares of the registrant’s Class L common stock were outstanding.

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INDEX

In this report, “West,” the “Company,” “we,” “us” and “our” refers to West Corporation and subsidiaries.

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of

West Corporation and subsidiaries

Omaha, Nebraska

We have reviewed the accompanying condensed consolidated balance sheet of West Corporation and subsidiaries (the “Company”) as of September 30, 2011, and the related condensed consolidated statements of operations for the three-month and nine-month periods ended September 30, 2011 and 2010, and stockholders’ deficit and cash flows for the nine-month periods ended September 30, 2011 and 2010. These interim financial statements are the responsibility of the Company’s management.

We conducted our reviews in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should be made to such condensed consolidated interim financial statements for them to be in conformity with accounting principles generally accepted in the United States of America.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of West Corporation and subsidiaries as of December 31, 2010, and the related consolidated statements of operations, stockholders’ deficit, and cash flows for the year then ended (not presented herein); and in our report dated February 23, 2011, we expressed an unqualified opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying condensed consolidated balance sheet as of December 31, 2010 is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

/s/ Deloitte & Touche LLP

Omaha, Nebraska

November 1, 2011

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WEST CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

(UNAUDITED)

The accompanying notes are an integral part of these condensed consolidated financial statements (unaudited).

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WEST CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(AMOUNTS IN THOUSANDS)

(UNAUDITED)

The accompanying notes are an integral part of these condensed consolidated financial statements (unaudited).

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WEST CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

AMOUNTS IN THOUSANDS)

(UNAUDITED)

The accompanying notes are an integral part of these condensed consolidated financial statements (unaudited).

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WEST CORPORATION

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT

(AMOUNTS IN THOUSANDS, EXCEPT SHARE AMOUNTS)

The accompanying notes are an integral part of these financial statements.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1. ORGANIZATION, CONSOLIDATION AND PRESENTATION OF FINANCIAL STATEMENTS

Business Description—West Corporation (the “Company” or “West”) is a leading provider of technology-driven, outsourced communications services. “We,” “us” and “our” also refer to West and its consolidated subsidiaries, as applicable. The scale and processing capacity of our proprietary technology platforms, combined with our expertise in managing voice and data transactions, enable us to offer a broad portfolio of services, including conferencing and collaboration, alerts and notifications, emergency communications and business processing outsourcing. Our services provide reliable, high-quality, mission critical communications designed to maximize return on investment for our clients. Our clients include Fortune 1000 companies, along with small and medium enterprises in a variety of industries, including telecommunications, banking, retail, financial services, public safety, technology and healthcare. We have sales and operations in the United States, Canada, Europe, the Middle East, Asia Pacific and Latin America.

We operate in two business segments:

agent-based services.

Unified Communications

— Conferencing & Collaboration Services. Operating under the InterCall^® brand, we are the largest conferencing services provider in the world based on conferencing revenue, according to Wainhouse Research, and managed over 115 million conference calls in 2010. We provide our clients with an integrated global suite of meeting replacement services. These include on-demand automated conferencing services, video management services and web-based collaboration tools that allow clients to make presentations and share applications and documents over the Internet, as well as video conferencing applications that allow clients to experience real-time video presentations and conferences.

— Event Services. InterCall offers an event services team to help clients who would like extra assistance planning, conducting and gathering report information for large scale or high-value meetings or conferences. Event services include audio and video streaming services, virtual event design and hosting, and operator-assisted audio conferencing services.

— Alerts & Notifications Services. Our proprietary technology platforms allow clients to manage and deliver automated personalized communications. We use multiple delivery channels (voice, text messaging, email and fax) based on the preferences of the recipient. For example, we deliver patient notifications, appointment reminders and prescription reminders on behalf of our healthcare clients, provide travelers with flight arrival and departure updates on behalf of our transportation clients send and receive automated outage notifications and payment reminders on behalf of our utility clients and transmit emergency evacuation notices on behalf of municipalities. Our scalable platform enables a high volume of messages to be sent in a short amount of time. Our platforms also enable two-way communications which allow the recipients of a message to respond with relevant information to our clients.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

— IP-Based Unified Communications Solutions. We provide our clients with enterprise class IP-based communications solutions enabled by our technology. We offer cloud-based IP-private branch exchange (PBX) call management and multi-protocol label switching (MPLS) network solutions, cloud-based security services, and integrated conferencing/desktop messaging and presence tools. We support these solutions with a range of professional sales engineering and systems integration services. We provide our clients with advice and the technology solutions to integrate their corporate communications.

Communication Services

—Platform-Based Services

— Emergency Communications Services. We believe we are one of the largest providers of emergency communications services, based on the number of 9-1-1 calls that we and other participants in the industry facilitate. Our services are critical in facilitating public safety agencies’ ability to receive emergency calls from citizens. Our clients generally enter into long-term contracts and fund their obligations through monthly charges on users’ telephone bills.

— Automated Call Processing. We believe we have developed a best-in-class automated customer service platform. Our services allow our clients to effectively communicate with their customers through inbound and outbound interactive voice response (IVR) applications using natural language speech recognition, automated voice prompts and network-based call routing services. In addition to these front-end customer service applications, we also provide analyses that help our clients improve their automated communications strategy. Our open standards-based platform allows the flexibility to integrate new capabilities, such as mobility, social media and cloud-based services.

— Agent-Based Services. We provide our clients with large-scale, agent-based services, including inbound customer care, customer acquisition and retention, business-to-business sales and account management, overpayment identification and recovery services, and receivables management solutions. We target opportunities to provide our agent-based services as part of larger strategic client engagements and with clients for whom these services can add value. We believe that we are known in the industry as a premium provider of these services. We have a flexible model with on-shore, off-shore and virtual home-based capabilities to fit our clients’ needs.

Basis of Consolidation—The unaudited condensed consolidated financial statements include the accounts of West and our wholly-owned subsidiaries and reflect all adjustments (all of which are normal recurring accruals) which are, in the opinion of management, necessary for a fair presentation of the financial position, operating results and cash flows for the interim periods. The unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto, together with Management’s Discussion and Analysis of Financial Condition and Results of Operations, contained in our Annual Report on

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Form 10-K for the year ended December 31, 2010. All intercompany balances and transactions have been eliminated. Our results for the three and nine months ended September 30, 2011 are not necessarily indicative of what our results will be for other interim periods or for the full fiscal year.

Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Revenue Recognition—In our Unified Communications segment, our conferencing and collaboration services, event services and IP-based unified communications solutions are generally billed and revenue recognized on a per participant minute basis or per seat basis and our alerts and notifications services are generally billed, and revenue recognized, on a per message or per minute basis. We also charge clients for additional features, such as conference call recording, transcription services or professional services. Our Communication Services segment recognizes revenue for platform-based and agent-based services in the month that services are performed and services are generally billed based on call duration, hours of input, number of calls or a contingent basis. Emergency communications services revenue within the Communication Services segment is generated primarily from monthly fees based on the number of billing telephone numbers and cell towers covered under contract. In addition, product sales and installations are generally recognized upon completion of the installation and client acceptance of a fully functional system or, for contracts that are completed in stages recognized upon completion of such stages. As it relates to installation sales, as of January 1, 2010, we early adopted new revenue recognition guidance for multiple element arrangements. For contracts entered into prior to January 1, 2010, revenue associated with advance payments was deferred until the system installations are completed. Costs incurred on uncompleted contracts are accumulated and recorded as deferred costs until the system installations are completed. This guidance was adopted prospectively and specifically for the product sales and installation services for the emergency communications services revenue. Contracts for annual recurring services such as support and maintenance agreements are generally billed in advance and are recognized as revenue ratably (on a monthly basis) over the contractual periods. Nonrefundable up-front fees and related costs are recognized ratably over the term of the contract except in certain instances where the future benefit is linked to the customer relationship, which may necessitate a longer recognition period.

Revenue for contingent collection services and overpayment identification and recovery services is recognized in the month collection payments are received based upon a percentage of cash collected or other agreed upon contractual parameters. In December 2010, we sold the balance of the investment in receivable portfolios and no longer purchase receivables for collection. Prior to the sale, we used either the level-yield method or the cost recovery method to recognize revenue on these purchased receivable portfolios.

Common Stock—Our equity investors (i.e., an investment group led by Thomas H. Lee Partners, L.P. and Quadrangle Group, LLC (the “Sponsors”), Mary and Gary West, who are the founders of West (the “Founders”) and certain members of management) own a combination of Class L and Class A shares (in strips of eight Class A shares and one Class L share per strip). Supplemental management incentive equity awards (restricted stock and option programs) have been implemented with Class A shares/options only. General terms of these securities are:

Class L shares: Each Class L share is entitled to a priority return preference equal to the sum of (x) $90 per share base amount plus (y) an amount sufficient to generate a 12% internal rate of return (“IRR”) on that base amount, compounded quarterly, from the date of the recapitalization in which the Class L shares were originally issued, October 24, 2006 until the priority return preference is paid in full. Each Class L share also participates in any equity appreciation beyond the priority return on the same per share basis as the Class A shares.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Class A shares: Class A shares participate in the equity appreciation after the Class L priority return is satisfied.

Voting: Each share (whether Class A or Class L) is entitled to one vote per share on all matters on which stockholders vote, subject to Delaware law regarding class voting rights.

Distributions: Dividends and other distributions to stockholders in respect of shares, whether as part of an ordinary distribution of earnings, as a leveraged recapitalization or in the event of an ultimate liquidation and distribution of available corporate assets, are to be paid as follows. First, holders of Class L shares are entitled to receive an amount equal to the Class L base amount of $90 per share plus an amount sufficient to generate a 12% IRR on that base amount, compounded quarterly, from the closing date of the recapitalization to the date of payment. Second, after payment of this priority return to Class L holders, the holders of Class A shares and Class L shares participate together, as a single class, in any and all distributions by the Company.

Conversion of Class L shares: Class L shares automatically convert into Class A shares prior to an initial public offering (“IPO”). Also, the board of directors may elect to cause all Class L shares to be converted into Class A shares in connection with a transfer (by stock sale, merger or otherwise) of a majority of all common stock to a third party (other than to Thomas H. Lee Partners, LP and its affiliates). In the case of any such conversion (whether at an IPO or sale), if any unpaid Class L priority return (base $90/share plus accrued 12% IRR) remains unpaid at the time of conversion it will be “paid” in additional Class A shares valued at the deal price (in case of IPO, at the IPO price net of underwriter’s discount); that is, each Class L share would convert into a number of Class A shares equal to (i) one plus (ii) a fraction, the numerator of which is the unpaid priority return on such Class L share and the denominator of which is the value of a Class A share at the time of conversion.

As the Class L stockholders control a majority of the votes of the board of directors through direct representation on the board of directors and the conversion and redemption features are considered to be outside the control of the Company, all shares of Class L common stock have been presented outside of permanent equity in accordance with ASC 480-10-S99, Classification and Measurement of Redeemable Securities. At September 30, 2011 and December 31, 2010, the 12% priority return preference has been accreted and included in the Class L share balance.

A reconciliation of the Class L common shares is presented below, in thousands:

Cash and Cash Equivalents—We consider short-term investments with original maturities of three months or less at acquisition to be cash equivalents.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Trust and Restricted Cash—Trust cash represents cash collected on behalf of our clients that has not yet been remitted to them. A related liability is recorded in accounts payable until settlement with the respective clients. Restricted cash primarily represents cash held as collateral for certain letters of credit.

Foreign Currency and Translation of Foreign Subsidiaries—The functional currencies of our foreign operations are the respective local currencies. All assets and liabilities of our foreign operations are translated into U.S. dollars at fiscal period-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the fiscal period. The resulting translation adjustments are recorded as a component of stockholders’ deficit and comprehensive income. Foreign currency transaction gains or losses are recorded in the statement of operations.

Subsequent Events—In accordance with the provisions of ASC 855, we have evaluated subsequent events. No subsequent events requiring recognition were identified and therefore none were incorporated into the condensed consolidated financial statements presented herein.

Recent Accounting Pronouncements—In December 2010, the Financial Accounting Standards Board (“FASB”) issued guidance requiring an entity, such as the Company, with reporting units that have carrying amounts that are zero or negative to assess whether it is more likely than not that the reporting units’ goodwill is impaired. The Company is required to perform step two of the goodwill impairment test if there are any adverse qualitative factors indicating that an impairment may exist for their reporting units with a zero or negative carrying value. This guidance became effective for the Company January 1, 2011 and the adoption had no effect on our financial position, results of operations or cash flows.

In June 2011, the FASB issued ASU No. 2011- 05, Comprehensive Income (Topic 220), requiring entities to present net income and other comprehensive income in either a single continuous statement or in two separate, but consecutive, statements of net income and other comprehensive income. Reclassification adjustments between net income and other comprehensive income must be shown on the face of the statement(s), with no resulting change in net earnings. ASU No. 2011- 05 is effective for statements issued by the Company after January 1, 2012. The Company will provide the required financial reporting presentation upon the effective date.

In September 2011 the FASB issued ASU No. 2011- 08, Intangibles-Goodwill and Other (Topic 350), permitting entities the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. ASU No. 2011- 08 is effective for the Company January 1, 2012 and the adoption is not expected to have an effect on our financial position, results of operations or cash flows.

2. ACQUISITIONS

PivotPoint

On August 10, 2011, we completed the acquisition of substantially all of the telecommunication business assets of PivotPoint Solutions, LLC (“PivotPoint”), a provider of wireless location accuracy compliance reporting, analysis and optimization. PivotPoint’s technology allows wireless carriers to monitor and optimize their location finding networks. The purchase price was $22.9 million and was funded by cash on hand and partial use of our revolving credit facilities. The results of the acquired PivotPoint assets have been included in the Communication Services segment since August 10, 2011.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Contact One

On June 7, 2011, we completed the acquisition of substantially all of the assets of Contact One, Inc. (“Contact One”), a provider of 9-1-1 database, mapping/GIS (Geographic Information System) and 9-1-1 products and services. The purchase price was $7.6 million and was funded by cash on hand. The results of the acquired Contact One assets have been included in the Communication Services segment since June 7, 2011.

Smoothstone

On June 3, 2011, we completed the acquisition of Smoothstone IP Communications Corporation (“Smoothstone”), a provider of cloud-based communications for the enterprise. The acquisition of Smoothstone added cloud-based IP telephony and network management to our Unified Communications solutions portfolio. The purchase price was $120.7 million and was funded by cash on hand and partial use of our revolving credit facilities. The results of Smoothstone have been included in the Unified Communications segment since June 3, 2011.

Unisfair

On March 1, 2011, we completed the acquisition of Unisfair, Inc. (“Unisfair”), a provider of hosted virtual events and business environments. These virtual events and environments offer a highly interactive experience through speaking sessions, exhibition floors and networking areas that support many business purposes, including sales and lead generation, training, product marketing and corporate and employee communications. The addition of Unisfair enhances our virtual event offering by permitting us to offer a complete end-to-end solution on a proprietary platform within our Unified Communications segment. The purchase price was $19.5 million and was funded by cash on hand. The results of Unisfair have been included in the Unified Communications segment since March 1, 2011.

TFCC

On February 1, 2011, we completed the acquisition of Twenty First Century Communications, Inc. (“TFCC”), a provider of automated alerts and notification solutions to the electric utilities industry, government, public safety and corporate markets. The addition of TFCC enhances our alerts and notifications platform and our position as a service provider to the U.S. utility industry. The purchase price was $40.5 million and was funded by cash on hand and partial use of our revolving credit facilities. The results of TFCC have been included in the Unified Communications segment since February 2, 2011.

POSTcti

On February 1, 2011, we completed the acquisition of Preferred One Stop Technologies Limited (“POSTcti”), a provider of unified communications solutions and services in Europe. POSTcti enables and provides single source communication convergence from best-of-breed industry-leading providers, combined with customized professional services implementation and dedicated ongoing product support. The purchase price included $4.3 million of non-contingent consideration paid in Sterling at closing and was funded with cash on hand. The purchase agreement for POSTcti also includes a three year contingent earn-out provision with a maximum payment of approximately £12.0 million and £0.4 million (approximately $18.7 million and $0.6 million at the September 30, 2011 exchange rate) of additional non-contingent deferred consideration withheld to secure sellers’ indemnification obligations. Based on a weighted average probability analysis, we have accrued $8.5 million at September 30, 2011 for the contingent earn-out. The results of the acquired POSTcti assets have been included in the Unified Communications segment since February 1, 2011.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

SPN

On November 9, 2010, we completed the acquisition of substantially all of the assets of Specialty Pharmacy Network, Inc. (“SPN”), a provider of billing and management information to payers and providers that participate in managing, administering and paying specialty pharmacy claims. SPN’s primary offering is a server based application whose data mining capabilities allow SPN to identify indicators of medical claim overpayment based on a proprietary library of pharmacy edits. The purchase price was $3.5 million and was funded by cash on hand. The results of the acquired SPN assets have been included in the Communication Services segment since November 9, 2010.

TuVox

On July 21, 2010, we completed the acquisition of TuVox Incorporated (“TuVox”), a provider of on-demand and interactive voice recognition applications. The purchase price was $16.5 million and was funded by cash on hand. The results of operations for TuVox have been included in the Communication Services segment since July 21, 2010.

Total acquisition costs expensed during the three and nine months ended September 30, 2011 were $0.4 million and $2.6 million, respectively, compared to $0.4 million and $1.3 million for the three and nine months ended September 30, 2010.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the respective acquisition dates for PivotPoint, Contact One, Smoothstone, Unisfair, TFCC, POSTcti, SPN and TuVox. The finite lived intangible assets are comprised of trade names, technology, non-competition agreements and customer relationships. We are in the process of completing the valuation of certain intangible assets and the acquisition accounting allocation, and accordingly the information presented with respect to the acquisitions of PivotPoint, Contact One, Smoothstone, Unisfair, TFCC, POSTcti and SPN are provisional and subject to adjustment.

Pro forma

Assuming acquisitions made since January 1, 2010, occurred as of the beginning of the periods presented, our unaudited pro forma results of operations for the three and nine months ended September 30, 2011 and 2010, respectively, would have been as follows, in thousands:

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

The pro forma results above are not necessarily indicative of the operating results that would have actually occurred if the acquisitions had been in effect on the date indicated, nor are they necessarily indicative of future results of the combined companies.

3. GOODWILL AND OTHER INTANGIBLE ASSETS

The following table presents the activity in goodwill by reporting segment, in thousands, for the nine months ended September 30, 2011:

The excess of the acquisition costs over the fair value of the assets acquired and liabilities assumed for the purchase of PivotPoint, Contact One, Smoothstone, Unisfair, TFCC, POSTcti and SPN were assigned to goodwill based on preliminary estimates. We are in the process of completing the acquisition accounting for certain intangible assets and liabilities. The process of completing the acquisition accounting involves numerous time consuming steps for information gathering, verification and review. We expect to finalize this process within twelve months following the respective acquisition dates. Goodwill recognized for PivotPoint, Contact One, Smoothstone, Unisfair, TFCC, POSTcti, and SPN at September 30, 2011 was approximately $11.7 million, $5.2 million, $90.6 million, $14.7 million, $18.9 million, $10.1 million and $3.0 million, respectively. During the third quarter of 2011 we finalized our acquisition accounting for the acquisition of TuVox. As a result of this finalization goodwill was reduced $0.3 million for a final working capital / escrow settlement.

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Factors contributing to the recognition of goodwill

Factors that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of the PivotPont assets included PivotPonts’s expertise in location accuracy compliance reporting mandated by the Federal Communications Commission, expansion of 9-1-1 products and services, market expansion and operational efficiencies.

Factors that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of the Contact One assets included Contact One’s expertise in 9-1-1 database, mapping/GIS and expansion of 9-1-1 products and services.

Factors that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of Smoothstone included a complete product portfolio of cloud-based, network-centric Unified Communications solutions, a flexible deployment model which enables a menu of solutions to be implemented to replace or complement customers’ existing on-premise equipment, expansion of the target market of potential clients and capital expenditure and operating cost avoidance.

A factor that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of Unisfair included enhancement of our virtual events and business environment services offering.

Factors that contributed to a purchase price resulting in the recognition of goodwill, deductible for tax purposes, for the purchase of TFCC included expansion of our presence in emergency alerts and notification services particularly in the utilities industry and the potential to drive additional services into this market.

A factor that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of the POSTcti assets included the expansion of our hosted and managed unified communications solutions to Europe.

Factors that contributed to a purchase price resulting in the recognition of goodwill, non-deductible for tax purposes, for the purchase of the SPN assets included SPN’s expertise and the large market opportunity in pharmacy insurance claims.

Other intangible assets

Below is a summary of the major intangible assets and weighted average amortization periods (in years) for each identifiable intangible asset, in thousands:

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WEST CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Amortization expense for finite-lived intangible assets for the three and nine months ended September 30, 2011 and 2010, in thousands, was:

Estimated annual amortization expense for the intangible assets noted above for 2011 and the next five years is as follows: