Seamless digital transformation for a telecom provisioning system
About the Client
Our client is one of the largest telecom operators in the US by revenue and is known for their cutting-edge innovation and services.
They partnered with HCLTech to modernize their 2-decade-old Mobile Telephone Activation System (MTAS), a critical component for provisioning new services. This legacy system was hindering the company's ability to innovate and scale.
Provisioning systems like MTAS are mission-critical and rarely undergo transformations due to their complexity and potential impact on customers. However, our client needed to prepare their network for next-generation technologies such as 5G and IoT by replacing the legacy system with a modern and scalable solution, delivering significant improvements in performance, reliability and time-to-market.
The Challenge
Addressing the limitations of an aging, high-demand legacy system
Transforming a 2-decade old legacy system came with several challenges:
- System fragility:
- Frequent outages disrupted business operations and impacted customers
- Maintenance was difficult due to outdated technology, lack of documentation and end-of-support issues
- Time-to-market delays:
- Complex legacy code extended product development timelines
- Scalability issues:
- The system handled 15 million transactions daily, but needed to scale to meet growing traffic demands
- Expertise gap:
- Limited in-house expertise on the legacy system posed risks during transformation
- Rising costs:
- Maintenance and operational costs were increasingly unsustainable
The Objective
Driving a seamless and impact-free digital transformation
Our client’s goal was to execute a seamless digital transformation of MTAS while ensuring:
- Zero customer impact during and after the transition
- Enhanced performance, scalability and reliability of the provisioning system
- Improved time-to-market for new product launches
The Solution
Modernizing legacy systems through strategic reengineering and automation
HCLTech employed a comprehensive and automated approach to deliver a seamless transformation:
- Legacy system analysis:
- Reengineered the legacy system to document existing functionality, critical components and potential risks before initiating the transformation
- Technology migration:
- The legacy C code was migrated to modern technologies like Java, Groovy and Spring Boot frameworks, improving performance and maintenance
- Testing and quality assurance:
- Rigorous testing procedures, including the development of an automated testing platform to compare response payloads between the legacy and new systems across millions of transactions, ensuring 100% code correctness
- Production deployment:
- A carefully planned deployment strategy was executed using a reference data comparator tool to validate reference data integrity during deployment, minimizing disruption and maximizing uptime
- Post-deployment support:
- Automated manual operations using custom-built tools:
- Automated reprocessing of failed transactions
- Clear stuck transactions with a zero-touch automation tool
Monitoring tools with auto-fix capabilities for network connectivity issues
The Impact
Driving measurable outcomes through seamless transformation
HCLTech delivered a transformative solution with significant, measurable benefits:
- Zero customer impact:
- Seamless production switch with zero outage for 80+ network elements after go-live
- Accelerated development and testing:
- Automated tool helps complete 75% of the code migration, reducing defects by 50%
- Time-to-market for new products improved by 75% faster delivery
- Enhanced performance and reliability:
- Application performance improved by 30% after transformation
- No outages since the transformation
- Cost optimization:
- Operational costs reduced by 40% through automation and improved efficiency
- Operational excellence:
- Automated tools and dashboards streamlined processes, reducing manual intervention
Conclusion: We successfully executed a high-impact digital transformation of the MTAS system, setting a benchmark in telecom provisioning projects. Our expertise, automation-driven approach and understanding of the client’s mission-critical needs enabled us to deliver a solution with zero customer impact, paving the way for future telecom projects globally.
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