atmIfVccTmBearerClassBbc 1.3.6.1.4.1.562.2.4.1.114.5.7.100.1.71

This attribute indicates the bearer capability for this connection. Class a service is a connection-oriented, constant bit rate ATM transport service. Class a service has end to end timing requirements and may require stringent cell loss, cell delay and cell delay variation performance.When a is displayed, the user is requesting more than an ATM only service. The network may look at the AAL to provide interworking based upon its contents. Class c service is a connection-oriented, variable bit rate ATM transport service. Class c service has no end-to-end timing requirements.When c is displayed, the user is requesting more than an ATM only service. The network interworking function may look at the AAL and provide service based on it. Class x service is a connection-oriented ATM transport service where the AAL, trafficType (cbr or vbr), and timing requirements are user defined (that is, transparent to the network). When the value of this attribute is x, the user is requesting an ATM only service from the network. In this case, the network shall not process any higher layer protocol. Class vp service is used to indicate a transparent VP service when the user is requesting an ATM only service from the network. In this case, the network does not process any higher layer protocol. This service differs from class x service in that with the class vp service both the VCI field (except for VCI values 0, 3, 4, and 6 through 15) and Payload Type field are transported transparently by the network. This attribute value is only applicable to SPVP and SVP connections. A value of notApplicable is displayed in the case of nailed-up PVCs for which this attribute has no significance.