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Technology - GPON Technology

 

GPON Technology
 
The GPON (gigabit passive optical network) standard differs from other PON standards in that it provides a capacity boosts in both the total bandwidth and bandwidth efficiency through the use of larger, variable-length packets in PON technology.  GPON Encapsulation Method (GEM) allows very efficient packaging of user traffic, with frame segmentation to allow for higher QoS for delay-sensitive traffic such as voice and video communications.


                                                        
GPON Basic Operation Architecture
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Features:

 Full Service Support, including voice (TDM), Ethernet, ATM, leased lines, and others
 Physical reach of at least 20 km with a logical reach support within the protocol of 60 km
 Support for various bit rate options using the same protocol, including symmetrical 622 Mbps, symmetrical 1.25 Gbps, 2.5 Gbps downstream, 1.25 Gbps upstream, and others  
 Strong Operations, Administration, Maintenance, and Provisioning (OAM&P) capabilities offering end-to-end service management
 Security at the protocol level for downstream traffic due to the multicast nature of PON  

Conclusion:

GPON recognized the need to evolve PON to being a Gigabit capable solution for transporting Ethernet and IP traffic. GPON is the most advanced PON protocol in the marketplace today, offering multiple-service support with the richest possible set of OAM&P features. It offers far higher efficiency when compared to ATM- and Ethernet-based PON technologies.