== Utvekslingsprotokoller * Synkron eller asynkron kmmunikasjon * Aktuell infrastruktur == Tjenestekvalitet (QoS) // ref. https://www.etsi.org/deliver/etsi_tr/103400_103499/103477/01.01.01_60/tr_103477v010101p.pdf **** _QoS refers to the maintenance of the session once established and covers aspects such as throughput, error recovery/detection._ **** //latency, jitter, end-to-end delay ** *Leveringstid for meldinger* + Garantert leveringstid vs. krav til leveringstid + Mål: Mikrosekunder, millisekunder, sekunder, timer, dager ** *Responstid for spørringer* + Garantert responstid vs. krav til responstid + Mål: Mikrosekunder, millisekunder, sekunder, timer, dager ** *Leveringssikkerhet* + Grad av garantert levering (uten behov for tilbakemelding på _applikasjonslaget_) + Mål: Prosentvis sannsynlighet for vellykket levering og mottak. == Tjenestegrad (GoS) // ref. https://www.etsi.org/deliver/etsi_tr/103400_103499/103477/01.01.01_60/tr_103477v010101p.pdf **** _GoS refers to the ability to access and establish services and includes the time required to establish sessions, system reliability (assessment of mean time before failure (MTBF) and meant time to repair (MTTR) for example) and recovery and system resilience (i.e. how it degrades)._ **** * Service establishment time * System reliability * System MTBF * System MTTR