What is GPON

 

GPON is built on newer technology and is similar to BPON except that throughput speeds are higher. A 2.488 Gbps download speed coupled with a 622 Mbps upload speed, typically split to 32 nodes yields about 80 Mbps down and 20 Mbps up.

Verizon is building new networks with GPON technology, while existing BPON systems will only be upgraded when capacity limits are reached.

BPON
BPON (Broadband PON) is a standard based on APON. It adds support for WDM, dynamic and higher upstream bandwidth allocation, and survivability. It also created a standard management interface, called OMCI, between the OLT and ONU/ONT, enabling mixed-vendor networks.

GPON
GPON (Gigabit PON) is an evolution of the BPON standard. It supports higher rates, enhanced security, and choice of Layer 2 protocol (ATM, GEM, Ethernet). In early 2008, Verizon having installed over 800 thousand lines by mid year. British Telecom, mobily-saudiarabia, Etisalat-uae, and AT&T are in advanced trials.