业务: vocational work; professiona ...特定: specially appointed; special ...会聚: assemble; flock together; co ...子: son层: I storey; tier; stratum业务特定汇聚子层: service special convergence sublayer; sscs service specific convergence sublayer特定业务会聚子层: sscs service specific convergence sublayer业务特定会聚协议: sscservice specific convergence protocol特定业务汇聚子层: service-specific convergence sublayer (sscs)会聚子层: convergence sublayer (cs); cs convergence sublayer公共会聚子层: common part convergence sublayer会聚子层指示: csi convergence sublayer indication公共部分会聚子层业务数据单元: cpcs-sdu cpcs-service data unit公共部分会聚子层: cpcs common part convergence sublayer物理层会聚子层: plcs physical layer convergence sublayer业务特定部分: service-specific part; ssservice specific part会聚子层规程数据单元: convergence sublayer protocol data unit业务特定协调功能: service specific coordination function sscf; sscf公共部分会聚子层协议数据单元: cpcs-pdu cpcs-protocol data unit合聚子层: cs:convergence sublayer汇聚子层: convergence sublayer适配层业务特定部分: service specific part-aal ssp-aal atm业务特定面向连接协议: sscop service specific connection oriented protocol; sscoservice specific connection oriented protocol公共部分汇聚子层: common part conversion sublayer业务特征: service features sf