CAS (CDR Analyzer System) serves as a crucial platform for the Bangladesh Telecommunication Regulatory Commission (BTRC) to analyze Call Detail Records (CDRs) and track billed duration from all ICXs (Interconnection Exchanges). With the enormous volume of data it handles—nearly 350 million records per day—CAS plays a pivotal role in ensuring transparency and accuracy in revenue assessment for BTRC. Provided by Telcobright, the local solution provider, CAS stands out as the sole provider from Bangladesh, showcasing the country's capabilities in developing sophisticated telecom solutions locally. This system not only aids in revenue assurance for BTRC but also strengthens regulatory oversight in the telecommunications sector of Bangladesh.