Which type of passive optical network (PON) access architecture replaced asynchronous PON (APON)?

Gigabit-capable PON (GPON) is recognized as the technology that replaced asynchronous PON (APON) due to its enhanced capabilities and performance. GPON supports higher bandwidth, allowing for faster data transmission rates compared to its predecessor, APON, which was limited in capacity. GPON utilizes a more efficient encapsulation method that allows for the transmission of both voice and data traffic, accommodating the growing demands for high-speed internet access in residential and business environments.

Furthermore, GPON employs a point-to-multipoint architecture, which maximizes the use of optical fiber by allowing multiple users to share the same fiber connection, ultimately reducing costs for network operators. These advancements make GPON the preferred choice in modern telecommunications infrastructures, streamlining deployment and facilitating higher service quality for end users. Such improvements positioned GPON as a significant evolution in passive optical network technology, succeeding APON effectively.