Converged Digital Engagement Solution


Supporting rapid rollout of mobile, fixed, and broadband offerings for T-Mobile’s second brand.

Customer Profile

Congstar is a wholly owned subsidiary of T-Mobile and one of the leading “no-frills” telecommunication companies in Germany.

Their customer base is around 6 million users with over 12 million subscriptions. The company’s success is due to the combination of excellent network quality, reasonable prices, and flexible contract terms.

The wide range of services provided by Congstar includes mobile connectivity (pre-paid and post-paid tariffs) and home internet—including via LTE, as well as mobile phones & tablets.

The Challenge

Congstar was launched with the goal of providing competitive mobile and broadband connectivity products with a focus on fully digital and personalized customer experience.

The challenge was to roll out a converged and single platform-based solution within the shortest possible timeframes, which addressed both the mobile and the fixed service offerings.

The Solution

Single Platform BSS: Converged digital engagement solution for multi-play services.

Key focus was on enabling the complex and flexible Product Catalogue and the related Frontend and Provisioning capabilities.

The solution scope includes:

  • Sales Enablement (Ecommerce & eShop)
  • Revenue Management (Interfaces to Billing and Rating)
  • Product Catalogue (Commercial and Technical Offering)
  • Customer Management
  • Customer Problem Management and Order Management

Platform configurability and the modern open, modular, and microservices-based architecture were the decisive criteria for the selection process.

Benefits Achieved

  • Fully digital and enhanced customer experience
  • Record time-to-market for new competitive service offering
  • Support growth of 100K new subscriptions per month upon launch
  • Cloud-native, open, modular, microservices-based architecture
  • Exceptional configurability and flexibility of the BSS platform
  • Agile delivery, business-driven, and transparent customer engagement

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