International Telecommunications Union sRAN architecture, see Split RAN architecture (ITU-T), 230 SRIOV, see Single root I/O virtualization Telemetry measurements, 372-373 SRLGs, see Shared risk link groups Terrestrial optical networks, 267 SSMF, see Standard single-mode fiber Stand-alone appliances, 3-4 function, 95 Standardizing VNF interfaces, 337 test-driven development, 396 Standard(s), 11-12, 224 TF, see Transit function access technologies, 241 "Theseus," 148 wavelength, 269 Third-generation networks (3G networks), 294 Standard single-mode fiber (SSMF), 267 Third Generation Partnership Project (3 GPP), 10, 241 Stateful function with site failover, 79 Threat analytics, 160 Stateful network access services, 79-81 3G networks, see Third-generation networks Stateless function with site failover, 79 3 GPP, see Third Generation Partnership Project Stateless network function 3GPP-specified IMS, 21 with multisite design, 82-83 Throughput, 251 resiliency features and impact on resiliency, 84 Tier 1 work tasks, 334 State management, 63 Tier 2 organization, 334 State persistence service, 303 Tier 3 organization, 334 Stock keeping unit (SKU), 255 Time-based metrics, 69 Storage-area network (SAN), 53, 57 Time division duplexing (TDD), 232 Storage, 52-53 Time-Division Multiplexing (TDM), 5-6 data migration, 57 Time series data, 332 fewer points of management, 57-58 Time to live (TTL), 41, 279-280 improving utilization, 57 Time-to-market (TTM), 298 resources, 214 TMN model, see Telecommunications management virtualization, 57 network model workloads, 36 Toll Free Service, 5 STORM, 146-147 TONA, see Tower Outage and Network Analyzer Strong Copyleft Licenses, 395 "Top-down" approach, 263 Structured relational databases, 144 Top of Rack (ToR), 235 Subscriber data, decoupling of, 314 Topology, 316-317 Subscriber identification module (SIM), 20 Total cost of ownership (TCO), 44, 256 Supplier independence, 270 Tower Outage and Network Analyzer (TONA), 7 Swift, 58 Traditional edge platforms Switch, 28 edge application, 252-253 