SDC:R0015

R0015: An SDC PARTICIPANT SHALL comply with the DiffServ specification [RFC2474] when marking MESSAGEs with respect to Quality of Service that is needed to achieve clinical effectiveness.

• The utilization of DiffServ does not guarantee a specific maximum packet loss rate or maximum latency, but only increases the probability of a low packet loss rate and increases the chance of low latency transmission. Nevertheless, no guaranteed boundaries (hard real-time) can be ensured. For applications that require guaranties regarding packet loss and latency, other Quality of Service mechanisms might be needed that are beyond the scope of this standard.
• R0015 satisfies BICEPS:R0092: A BICEPS compliant BINDING SHOULD provide means to define Quality of Service metrics for a communication between two participants.
• As Default Forwarding is the implied marking if no marking is provided an SDC PARTICIPANT does not have to implement any DiffServ handling if not needed.
• The marking of MESSAGEs with respect to Quality of Service by an SDC PARTICIPANT utilizing the DiffServ specification will have only be effective if the network infrastructure for transmitting the MESSAGEs supports the DiffServ specification as well.

From chapter 10. Non-Functional Quality Attributes