The service under test. The service can be represented by: 1. An MA that contains one or more MEPs 2. A single multi-CoS flow 3. Mutiple single-CoS flows 4. Service name + egress port When MA is used, the object must point to the first accessible column of dot1agCfmMaNetTable i.e. it must contain the OID of the corresponding dot1agCfmMaNetFormat. When a single multi-CoS flow is used, the object must point to the first accesible column of flowTable i.e. it must contain the OID of the corresponding flowName. When multiple single-CoS flows are used, the object must be null i.e. contain zeroDotZero. The flows that represent the service shall be listed in ituSatSingleCosFlowTable. When a service name+egress port is used, the object must be null i.e. contain zeroDotZero. The service name and egress port shall be indicated by ituSatGeneratorServiceName and ituSatGeneratorEgressPort, respectively.