MTBF (Mean Time Between Failures)

Mean Time Between Failures is the expected average time between failures of a repairable system, computed across the operating fleet. MTBF is a manufacturer-supplied reliability spec for telecom equipment and feeds into availability calculations alongside MTTR. It is most useful when interpreted with the assumed failure distribution and operating conditions.

Categories: Operations and BusinessInternet and Routing

MTBF in context

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.

Telecom networks depend on Internet-style routing (BGP, DNS, MPLS) for interconnect, transport and application delivery. Route hijacks and DNS abuse can degrade or intercept signaling as easily as any application-layer attack, which is why RPKI and DNSSEC are now standard hardening for carrier networks.

To place MTBF in the wider telecom-security picture, review Mediation System, Operating System (OS), 3GPP, IP, IP Address and Order Management.

Related terms

Related topic hubs

  • Diameter Attacks S6a IDR/PUR/CLR abuse, subscriber tracking, LTE signaling attacks.

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