MTTR (Mean Time To Recovery)

Mean Time To Recovery (or Repair) is the average time required to restore a failed system or service to normal operation. MTTR is a core operational SLI alongside availability and Mean Time Between Failures, and is improved by good monitoring, automated runbooks, redundant architectures, and well-rehearsed incident response.

Categories: Core Network

MTTR in context

The mobile core carries subscriber sessions, mobility and policy. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF.

To place MTTR in the wider telecom-security picture, review 5G, 5G SA, 5G NSA, 5G SBA, ACL and AES — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

5G
5G SA
5G NSA
5G SBA
ACL
AES
A5/3
AMF

More from the TelcoSec Glossary

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