The meaning is variable with the value of hwExtSrvFlowParaType: If the value of hwExtSrvFlowParaType is set to 1, 2, 7, or 16, this leaf is reserved. If the value of hwExtSrvFlowParaType is set to 3, 5, or 8, this leaf indicates the port ID. If the value of hwExtSrvFlowParaType is set to 4, this leaf indicates the ONT ID for the GPON profile mode and GEM port ID for the GPON distributed mode. If the value of hwExtSrvFlowParaType is set to 6, 9, 10, 11, or 12, this leaf indicates the ONT ID. If VLAN range service flow for all ONTs is created, the value of this leaf is -1. If the value of hwExtSrvFlowParaType is set to 13, this leaf indicates the CNU ID. If the value of hwExtSrvFlowParaType is set to 14, this leaf indicates the ONT ID and the type of service-port endpoint, as follows: | bit16-bit31 | bit0-bit15 | | ONT ID | the type of service-port endpoint | 0: ONT lan-eth port 1: ONT iphost port 2: ONT lan-vdsl port 255: ONT WAN port If the value of hwExtSrvFlowParaType is set to 15, this leaf indicates the CM index.