Thanks, John. Good afternoon, everyone. For those using Slides today, please join us on Slide 4. I'm pleased to share that CSG's business momentum continued in Q1 2022, as team CSG delivered another strong quarter of growth on top line revenue and bottom line EPS. Even as we absorbed the discounts associated with the exciting renewals of Charter Communications and DISH that we signed and announced in Q4 of last year. It is a testament to the strength of our recurring revenue SaaS business model and the continued success of our sales performance, which is as robust as ever, to grow revenue and EPS in the quarters following two of our top three customer renewals. Equally important for us, as proud and as committed as every CSG employee is, to deliver excellent results every single quarter, the elevation in transformation of CSG is much more profound and longer-term in nature than any given quarterly results. At CSG, we aspire to be a $2 billion and beyond purpose-driven SaaS platform Company who envisions, invents and shapes a better more future-ready world. We will hold ourselves accountable to change the lives of our employees and the customers we are honored to serve for the better. We will redefine the industries we are proud to lead. We will make a lasting impact in the communities and the world in which we operate and across the wider environmental, social and governmental spectrum. While we still have much important work to do, we are very proud that leading organizations are beginning to recognize the meaningful commitment CSG has and will continue to make on the ESG and D&I fronts. To this point, I'm delighted to announce that we were recently honored to receive our first Prime ESG rating from Institutional Shareholder Services, ISS for short, one of the leading ESG rating agencies in the world. This designation is based on an analysis of more than 100 sector-specific ESG factors and those receiving high scores within the respective industry are awarded a Prime distinction. And with this designation, our stock now qualifies as a responsible investment in the eyes of ISS, which is truly an honor. And on the back of our good Q1 start, we are pleased to confirm all 2022 financial guidance targets. Based on the continued confidence we have in our near-term and longer-term business outlook, we have also increased our share repurchase activity by buying back over $45 million in stock over the last 12 months, with $16 million spent on share buybacks in Q1. From a product perspective, we launched CSG Encompass and an open API product platform that enables global communication service providers to unlock the potential of 5G, by simplifying the complexity of multi-faceted digital ecosystems, that usually deliver next generation digital services and extraordinary customer experiences. I'll provide more detail on this exciting new product in a few moments. And we continue to win big in the North American cable market, where we signed a multi-year contract renewal and expansion with a top six broadband cable provider in the US. And with respect to Charter Communications, who we signed a $1.5 billion six-year contract expansion in November of 2021. The subscriber conversion plan from a competitor's billing system is continuing as expected, with the remaining approximately 10 million subscribers planned to be converted over the next 12 months. Our good Q1 growth proves that CSG is a strong healthy and resilient Company, especially with the backdrop of today's turbulent global economic environment. Turning to Slide 5. I will revisit our five strategic objectives that form the foundation of CSG's a long-term future success. These things should be familiar to everyone who has been following our big progress. CSG aspires to deliver long-term organic growth in the 2% to 6% growth range, which we proudly achieved at the upper end in 2021. We aim to add operating scale and expand our operating leverage by growing to a least $1.5 billion in revenue by year end 2025, with a stretch-goal of $2 billion in revenue. We strive to be the number one SaaS provider of choice for global CSPs, by providing the most value-adding technology solutions and by being easier to do business within our competitors. We plan to diversify our revenue even more as we expand in big faster growth industry verticals with more direct sales and channel partner success in retail, government, financial services, healthcare technology, and more. And finally, we will complement our accelerated organic growth with disciplined value-enhancing M&A, to turbocharge the value we bring our customers and our shareowners. Moving to Slide 6, you can see that we performed well in Q1 against all five strategic objectives. First, with respect to revenue growth, we reported $264 million in total Q1 revenue, resulting in 4.5% year-over-year growth. We are also proud that EPS growth grew even faster at 4.9% year-over-year. On the right side of Slide 6, we believe that the current economic environment benefits CSG's high recurring revenue SaaS business model and our strong healthy balance sheet creates attractive organic and inorganic market opportunities on the march to $2 billion and beyond. As a reminder, by 2025, we aspire to gain scale in the markets where we compete to exceed $1.5 billion to $2 billion in annual revenue. We aspire to expand CSGs operating leverage and use our strong healthy balance sheet to deliver EPS growth that outpaces revenue growth. We aspire to consistently deliver better and better business results, so that our shareholders are rewarded with the trading multiples that they deserve, when they invest in a purpose-driven faster-growth multi-industry vertical SaaS platform Company like CSG. In our base case, we aspire to exceed $1.5 billion in revenue, which means, even if we come up short against our stretch case ambitions, CSG will still grow revenue by over 50% and add over $500 million in profitable recurring revenue by 2025. To reach the $2 billion stretch case revenue aspiration by 2025, we will continue to allocate capital to its most value-adding use and to eventually close bigger scale acquisitions that become even more transformational for CSG and the industry. On this last point, I will continue to reinforce a key point shared on almost every analyst and investor call. This Management team is laser-focused on creating shareholder value, not building empires. We will hold ourselves accountable to adding scale, accelerating growth, expanding our operating leverage, and deploying capital to its highest and most-productive use, all with a focus on rewarding our investors, just like we work hard every day to delight our customers and our employees. Turning to Slide 7. We had good success in Q1 on our goal to be the number one technology provider of choice for communication service providers globally and our continued sales success with both North American and global CSPs prove that we are executing well against this strategic priority. Our revolutionary new product, CSG Encompass, enabled us to launch a more holistic end-to-end solution to solve the most complicated problems for CSP's around the world. Encompass is a SaaS-based open integrated and modular solution that significantly simplifies the complexity of multi-sided B2B2X ecosystems and business models for our global telecom customers. At its core, Encompass brings together CSG's cutting-edge revenue management and digital monetization products, with two of our acquisitions from last year, Tango Telecom and DGIT. As a reminder, DGIT's technology provides a configure, price, quote, CPQ for short, order management platform that has a strong presence and adoption in the global telecom market. While Tango Telecom's technology armed CSG with real-time dynamic policy and call control management, both of which are absolutely crucial to global CSP's in a 5G world. We are excited to announce some early Q1 wins on the new Encompass Platform, including our deal with VicTrack, a state-owned enterprise that manages public transport infrastructure in Victoria, Australia. We deployed Encompass's CPQ and order management solution to support the digital transformation and automation of its telecommunications network. With CSG's industry-leading platform, VicTrack's exciting network and processes now deliver more efficient and cost-effective solutions to their in-transport government and wholesale customers. In the cable market, we have long-term guaranteed contracts to be the BSS provider of choice for all 65 million combined Comcast and Charter subscribers, the two largest cable providers. With CSG having migrated, tens of millions of subscribers of both the Amdocs and NetCracker over the last six years. We plan to build on this market share success in the years ahead. Working hand-in-hand with Charter, CSG successfully migrated over 5 million subscribers in the Ohio, Wisconsin and Kansas City markets in 2021, including completing over 4 million migrations in the second half of last year. While the timing could still vary a little, we are on track with the existing conversion plan to migrate the remaining 10 million charter customers over the next 12 months. Additionally, we signed a multi-year renewal and expansion with a Top 6 US cable company with over 1.6 million homes passed. With this deal, we expanded our standing as this customer's Billing Provider of Choice and we'll continue to support the cutting-edge customer, with additional services like our field service management platform. And CSG's success is not limited to North America. In the global telecom market, we continue to grow with new wins and contract extensions with leading telecom operators all around the world. During the quarter, we closed a fantastic deal with Optus, the second largest wireless company in Australia with over 10 million customers. This win positioned CSG as the strategic rating and revenue management Provider of Choice for Optus Wholesale. What was so special about this win, is that we were able to unseat not one, but two incumbent service providers, further proving that CSG has the right products and industry experts to unseat and beat incumbent providers. Further, we signed a multi-year deal with Axiata, Sri Lanka. This deal, our Digital Wholesale SaaS solution, replaces one of our key competitors. We look forward to further helping Axiata who is one of APAC's largest telecoms group with six operating companies to solve their most pressing business challenges. Turning to Slide 8. Since 2017, CSG has grown revenue from exciting new industry verticals like retail, government, financial services and healthcare, from 7% of total 2017 CSG revenue, to over 24% of total revenue at year end 2021. And while this metric can vary a little bit from quarter-to-quarter, it is extremely encouraging to see 27% of our Q1 revenue came from new industry verticals. Being a Partner of Choice for some of the biggest brands in higher growth industry verticals, where CSG helps them digitize and modernize their customer engagement and cloud payments, continues to be a big game-changer for CSG. Last year, we won and later expanded deals with two of the largest drugstore chains in the US and one of the largest retailers in the world, who all selected CSG software to power the retail and clinic customer engagements. Our solution is increasingly important to all three of these large customers, given the unprecedented number of inbound requests that healthcare providers, retail pharmacies and government agencies are getting, related to vaccinations, appointments and prescriptions. And I'm pleased to report that during Q1, we continued to win new business in this space, as we further expanded our relationship with and close meaningful new business with one of the largest drugstore chains in the US, as part of the new digital engagement deal that we signed in the quarter. Further, a couple of years ago, we signed a very good deal with Formula 1, to manage its direct-to-fan OTT experience, where we manage user subscriptions, payments, entitlements and devices. I'm proud to announce that we signed a multi-year contract with them during the quarter. We are extremely excited and proud to continue serving Formula 1 as the global popularity of this racing series continues to explode and growth all around the world. In the payments market, we returned to meaningful revenue growth in the quarter, with good double-digit growth in the last two months of Q1, coming from our strong industry vertical sales results, propelled by our industry-leading recurring revenue SaaS integrated payment platform. CSG Forte provides award-winning full PayFac, short for payment facilitation capabilities to 88,000 active merchants and ISV partners, which was a robust 7,000 merchant increase in Q1, who need ACH, credit, payment gateway and payment processing capabilities, serving a wide range of the recurring revenue industry verticals. As a leader in ACH processing, we continue to add scale by signing ISV partners in fast growing industry verticals like Property Management. In March, we announced a strategic partner with Velosimo, which is the only provider of no-code, cloud-native, technology connectors. This partnership enables government agencies to easily connect and augment their technology stacks with enterprise resource planning software vendors via a single processing partner. Looking ahead, we've built an exciting sales pipeline in our payments business across multiple verticals that are contributing to our improved revenue growth, which bodes well for our ability to sustain the good double-digit organic growth in the payments market. Moving to the right-hand side of Slide 8, we continue to execute against our disciplined value creation M&A playbook. We expanded our offering in the digital customer engagement market, with the purchase of Kitewheel, a SaaS-based recurring revenue company that supports real-time interaction management through omnichannel Journey Orchestration and analytics. And this transaction formed the foundation of CSG Xponent launch, a bold and innovative multi-vertical market offering in the digital engagement space. Plus, as I mentioned earlier, the acquisition of Tango Telecom and DGIT enabled us to launch CSG Encompass, which I spoke about earlier. As we look ahead, we will remain laser-focused on winning and closing more and bigger organic and inorganic deals in these exciting new arenas and unlocking even greater value from existing and new acquisitions, that will help CSG grow and elevate even more. As I wrap up on Slide 9, across all five strategic priorities, the results speak for themselves. CSG is building meaningful momentum and elevating every aspect of our business that we fully expect will fuel our continued long-term growth and transformation. We hope you see the same thing we do when we analyze our business. CSG's purpose is bold, inspiring and growth-oriented. Our strategic vision and daily execution are focused and disciplined. We are elevating our culture, our diversity, and our global talent. And now I will turn it over to Hai to provide more detail on Q1 results and our outlook for fiscal year 2022.