BSS (Business Support System)

The software systems and processes handling business operations in telecommunications including billing, customer relationship management, order management, product catalog, and revenue assurance. BSS systems interface with OSS (Operations Support Systems) to enable end-to-end service delivery and monetization.

Categories: Radio Access NetworkOperations and BusinessInternet and Routing

BSS in context

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

OSS/BSS platforms (provisioning, charging, mediation, order management) hold the highest-value subscriber and revenue data on the operator side. They are heavily targeted for fraud and insider abuse and are increasingly in scope for regulatory obligations like NIS2 and the UK Telecoms Security Act.

To place BSS in the wider telecom-security picture, review Mediation System, Order Management, Billing System, Cybersecurity, MAC Address and Operating System (OS).

Related terms

Equipment

OSS, OAM and element managers (EMS, NMS)

Articles in the P1 mobile network security guide

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