A telecommunications system including a radio access network, RAN, and a distributed antenna system, wherein the distributed antenna system includes a head-end unit and one or more remote units, wherein the head-end unit of the distributed antenna system is communicatively coupled between one or more RAN nodes (118, 120) and the one or more remote units, the telecommunications system comprising: a joint radio access network-distributed antenna system-self optimizing network, RAN-DAS-SON, entity, wherein the joint RAN-DAS-SON entity is configured to jointly optimize the radio access network and the distributed antenna system; a node (102, 118, 120), wherein the node (102, 118, 120) is the head-end unit of the distributed antenna system or a RAN node (118, 120), the node (102, 118, 120) comprising an interface (104, 122) configured to communicate parameters with the joint RAN-DAS-SON entity; wherein the node (102, 118, 120) is configured to: transmit a first set of parameters to the joint RAN-DAS-SON entity; receive instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; when the node (102, 118, 120) is the head-end unit, adjust one or more configuration settings of the node and/or one or more configuration settings of one or more remote units communicatively coupled to the node based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; and when the node (102, 118, 120) is the RAN node (118, 120), adjust one or more configuration settings of the node (118, 120) based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity. a joint radio access network-distributed antenna system-self optimizing network, RAN-DAS-SON, entity, wherein the joint RAN-DAS-SON entity is configured to jointly optimize the radio access network and the distributed antenna system; a node (102, 118, 120), wherein the node (102, 118, 120) is the head-end unit of the distributed antenna system or a RAN node (118, 120), the node (102, 118, 120) comprising an interface (104, 122) configured to communicate parameters with the joint RAN-DAS-SON entity; wherein the node (102, 118, 120) is configured to: transmit a first set of parameters to the joint RAN-DAS-SON entity; receive instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; when the node (102, 118, 120) is the head-end unit, adjust one or more configuration settings of the node and/or one or more configuration settings of one or more remote units communicatively coupled to the node based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; and when the node (102, 118, 120) is the RAN node (118, 120), adjust one or more configuration settings of the node (118, 120) based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity. transmit a first set of parameters to the joint RAN-DAS-SON entity; receive instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; when the node (102, 118, 120) is the head-end unit, adjust one or more configuration settings of the node and/or one or more configuration settings of one or more remote units communicatively coupled to the node based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity; and when the node (102, 118, 120) is the RAN node (118, 120), adjust one or more configuration settings of the node (118, 120) based on the instructions regarding target parameters for jointly optimizing the radio access network and the distributed antenna system from the joint RAN-DAS-SON entity.