Cedros

c.-ICFD - SIM Box Detection

With c.-ICFD, Cedros offers a modular system for the efficient detection of SIM boxes. The system supports the verification of call-by-call, Voice-over-IP, and calling card providers. Based on collaborations with leading network providers, we have developed a system that ensures reliable detection of IC fraud cases.

When using GSM gateways or SIM boxes to connect landline networks with wireless networks, wireless service providers are faced with the following problems:

  • Losses in revenues and bad debts due to the difference between interconnection fees and network-internal calls
  • Considerable reduction of quality: voice quality, connection establishment times, transmission of phone numbers etc.
  • Network planning uncertainties, higher costs for the necessary frequencies
  • Difficulties in complying with legal requirements, e.g. localizing emergency calls, data retention


Detailed documentation of the involved systems provides all the information required for use in court, or for the justified deactivation of the SIM cards used. All data is stored in an SQL database to be available for later examination.




Another topic that has become increasingly important is the issue of bypass fraud. International transfer points are bypassed, and the call is diverted directly to the destination country, where the call is terminated via a GSM gateway. By using VoIP technology, it is possible to realize technical requirements in an extremely cost-effective way, which considerably increases the operator’s profit.

The c.-ICFD system very efficiently enables the detection and documentation of interconnection fraud (SIM Box Detection). Based on this system, we also offer the service of performing these tests at Cedros. This allows for rapid initialization and a comprehensive examination of the providers on the market.

Efficiently bringing down arbitrage

  • Efficient detection of GSM gateways (SIM Box Detection)
  • Call by call, Voice-over-IP (VoIP) and calling card
  • Detailed documentation for use in court
  • Legal security through expert assessment
  • Checks are based exclusively on voice connections
  • Results are stored in an SQL database
  • Customizable reporting (XML)
  • Customizable notification per event
  • Distributed system (master, decentralized test nodes)
  • Browser-based administration

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