A method includes: providing cable modem identification information of a specific cable modem device and infrastructure identification information of a specific coaxial infrastructure access point is provided to an operations support system of a telecommunications network; transmitting the cable modem identification information, the infrastructure identification information, and line identification information to an access orchestrator entity of the telecommunications network; and performing or triggering attachment to the broadband access network using the specific coaxial infrastructure access point and a specific hybrid fiber coaxial network equipment.