Billing System

A telecom billing system rates usage events (calls, messages, data sessions, content purchases), applies tariffs and discounts, generates invoices, handles payments, and integrates with revenue assurance and fraud management. Billing systems hold large volumes of personal and financial data and are subject to PCI DSS for card payments and to operator-specific regulatory audits.

Categories: Radio Access NetworkFraudOperations and Business

Billing System in context

The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

Telecom fraud costs operators an estimated $40+ billion per year. Common vectors include IRSF, Wangiri callback scams, SIM box bypass, PBX hacking and A2P grey routing.

To place Billing System in the wider telecom-security picture, review PBX Hacking, Revenue Share Fraud, Wangiri 2.0, Blue Team, BSS and Data Localization — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.