Method for an improved and simplified operation of a broadband access network of a telecommunications network and/or for an improved and more flexible assignment and/or installation of cable modem devices to be used with a hybrid fiber coaxial network part of the broadband access network, wherein the telecommunications network comprises an operations support system, and an access orchestrator entity, wherein in order to provide for an improved and more flexible assignment and/or installation of a specific cable modem device to be used with and/or connected to a specific hybrid fiber coaxial network equipment, and in connection to a specific coaxial infrastructure access point, the method comprises the following steps: -- in a first step, a cable modem identification information of the specific cable modem device and an infrastructure identification information of the specific coaxial infrastructure access point is provided or transmitted to the operations support system using a communication channel bypassing the specific coaxial infrastructure access point, -- in a second step, subsequent to the first step, the cable modem identification information of the specific cable modem device, the infrastructure identification information of the specific coaxial infrastructure access point, as well as a line identification information are transmitted to the access orchestrator entity, wherein subsequent to the second step, the specific cable modem device is registered with the broadband access network, -- in a third step, subsequent to the registration of the specific cable modem device with the broadband access network, the specific cable modem device performs or triggers an attachment operation and/or is able to attach to the broadband access network, using the specific coaxial infrastructure access point and the specific hybrid fiber coaxial network equipment. wherein the telecommunications network comprises an operations support system, and an access orchestrator entity, wherein in order to provide for an improved and more flexible assignment and/or installation of a specific cable modem device to be used with and/or connected to a specific hybrid fiber coaxial network equipment, and in connection to a specific coaxial infrastructure access point, the method comprises the following steps: -- in a first step, a cable modem identification information of the specific cable modem device and an infrastructure identification information of the specific coaxial infrastructure access point is provided or transmitted to the operations support system using a communication channel bypassing the specific coaxial infrastructure access point, -- in a second step, subsequent to the first step, the cable modem identification information of the specific cable modem device, the infrastructure identification information of the specific coaxial infrastructure access point, as well as a line identification information are transmitted to the access orchestrator entity, wherein subsequent to the second step, the specific cable modem device is registered with the broadband access network, -- in a third step, subsequent to the registration of the specific cable modem device with the broadband access network, the specific cable modem device performs or triggers an attachment operation and/or is able to attach to the broadband access network, using the specific coaxial infrastructure access point and the specific hybrid fiber coaxial network equipment. -- in a first step, a cable modem identification information of the specific cable modem device and an infrastructure identification information of the specific coaxial infrastructure access point is provided or transmitted to the operations support system using a communication channel bypassing the specific coaxial infrastructure access point, -- in a second step, subsequent to the first step, the cable modem identification information of the specific cable modem device, the infrastructure identification information of the specific coaxial infrastructure access point, as well as a line identification information are transmitted to the access orchestrator entity, wherein subsequent to the second step, the specific cable modem device is registered with the broadband access network, -- in a third step, subsequent to the registration of the specific cable modem device with the broadband access network, the specific cable modem device performs or triggers an attachment operation and/or is able to attach to the broadband access network, using the specific coaxial infrastructure access point and the specific hybrid fiber coaxial network equipment.