because the sla guarantees a stated level of service quality, it’s a key tool in determining if an internet service is right for your network requirements. this means that the internet service will support an average downtime of about 4 minutes or less per month. but some slas will limit the service guarantee only to the carrier’s core network, excluding the customer access network. type ii circuits are often covered by an sla that is separate from services provided directly over the carrier’s own network. packet delivery is defined as the percentage of data packets received with respect to data packets sent. the amount of time it takes a packet to travel on the network is known as latency. pay close attention to the definitions to accurately assess and compare the latency components of slas.