A method for access network pairing, between a domain master and an end-point for forming a G.hn domain between a G.hn access multiplexer and one of a plurality of G.hn access network terminals, each connected to the G.hn access multiplexer by a corresponding phone line of a bundle of cables, wherein the G.hn access multiplexer comprises a plurality of ports, each of these ports performs a function of a domain master out of which one is the domain master for the access network pairing, the method comprises: setting up domain name and unique seed value of the domain master; setting up domain name of the end-point; connecting wire between the G.hn access multiplexer and the G.hn access network terminal for the corresponding port of the G.hn access multiplexer to be opened; activating the port to be opened functioning as the domain master, which domain master sends a MAP-D frame including the unique seed value to the end-point, and starting pairing; in the domain master, inserting the unique seed value into MAP-D frames, and transmitting the MAP-D frames to the end-point; in the end-point, receiving the MAP-D frames and identifying the seed value of the strongest signal of MAP-D frame among received MAP-D frames; in the end-point trying to link-up with the domain master by using the identified seed value; in the domain master, accepting registration request with the unique seed value of said domain master and starting to connect the link; in the G.hn access multiplexer, identifying the MAC address of the linked-up end-point, setting up the MAC address as a registered address into the domain master, and automatically storing the MAC address into the domain master; and in the G.hn access multiplexer, setting up the MAC addresses stored in the domain master during initializing process, and connecting the link only with the end-point having the stored MAC addresses. setting up domain name and unique seed value of the domain master; setting up domain name of the end-point; connecting wire between the G.hn access multiplexer and the G.hn access network terminal for the corresponding port of the G.hn access multiplexer to be opened; activating the port to be opened functioning as the domain master, which domain master sends a MAP-D frame including the unique seed value to the end-point, and starting pairing; in the domain master, inserting the unique seed value into MAP-D frames, and transmitting the MAP-D frames to the end-point; in the end-point, receiving the MAP-D frames and identifying the seed value of the strongest signal of MAP-D frame among received MAP-D frames; in the end-point trying to link-up with the domain master by using the identified seed value; in the domain master, accepting registration request with the unique seed value of said domain master and starting to connect the link; in the G.hn access multiplexer, identifying the MAC address of the linked-up end-point, setting up the MAC address as a registered address into the domain master, and automatically storing the MAC address into the domain master; and in the G.hn access multiplexer, setting up the MAC addresses stored in the domain master during initializing process, and connecting the link only with the end-point having the stored MAC addresses.