Description: This traffic descriptor type is to define a connection with an Ethernet endpoint, and it is for a user that does not want to use ATM parameters directly. The EtherNet bandwidth will be converted to a nrtVbr traffic descriptor. The conversion from Ethernet bandwidth to ATM cell rate must add an ATM cell tax. This is defined using the pcbe (packet-to-cell bandwidth expansion) factor. If this is not defined for the traffic descriptor, then the system default (qbAtmDefaultPCBE)should be used.

The use of the parameter vector for this type: Parameter 1: minbw, the minimum guarnteed bandwidth fo rthe connection. This is defined in Mb/sec. (0-100). Parameter 2: maxbw, the maximum bursting capability of the connection. This is defined in Mb/sec (1-100). It is default to minbw. Parameter 3: bw, indicates the bandwidth for the PON segment. Vaules are expressed in Mb, and may take interger value between 1 and 100. (only apply to 155Mb PON). It is default to minbw. Parameter 4: pcbe, it defines the packed-to-cell bandwidth expansion. This is the percentage overhead that is used to convert Ethernet bandwidth to ATM cell rates. It is default to qbAtmDefaultPCBE. Parameter 5: not used.