How can I change from a B FLET'S type line to a FLET'S Hikari Next or FLET'S Hikari Light line?
You will need to contact NTT East/NTT West and apply to change the FLET'S line type. You may contact NTT East on 0120-565-950. You may contact NTT West on 0120-064337. After that, you will need to apply to change the Course on your Asahi Net account so your account is capable of connecting to the Internet on the FLET'S Hikari Next or FLET'S Hikari Light line.