China Telecom Optical Fiber Access
Last month, the broadband line at home was upgraded from the original ADSL to the fiber to the home, that is, the legendary FTTH. Compared with the traditional LAN, the biggest intuitive difference is that the entrance line is different, as shown in the figure: this is the tail fiber that enters the user's home, and then uses the optical cat to convert signals. China Telecom uses PON architecture, namely passive optical network, for its optical fiber access. From my own experience, the broadband package opened at home is 6M, and the ADSL line before