光纖乙太網路

在通訊業界,PON與P2P光纖孰優孰劣的辯論已經持續了十年以上,而P2P光纖網路確實在某些層面的表現比PON更為出色。

Dedicated Bandwidth
Point-to-Point Fiber Technology offers a dedicated bandwidth up to 1000Mbps to the subscribers, whereas PON technology offers up to 77Mbps (2.488Gbps/32splits).
Full Compatibility
Being a mature and open standard for more than 30 years, FTTX Point-to-Point from different brands offers a much better interoperability compared to PON technology, which is known for its compatibility issues between different brands.
Great Scalability
From the PON OLT, each port/fiber is limited to providing services to 32 or 64 subscribers, depending on the splitters used; whereas in a network based Point-to-Point technology, adding a switch or hub can always add more subscribers to a service.
High Flexibility
In PON technology, services are generally provided within a 20km range of the OLT, while services can be provided up to 160km from the last Active device (Router/switch) in a Point-to-Point FTTX network.
Easy Trouble Shooting

Point-to-Point Ethernet technology is more mature with regards to troubleshooting with commonly accepted tools available. The deployment of passive splitters complicates troubleshooting in PON technology networks.”

No Single-Point-of-Failure
A number of "Single-Points-of-Failure" can be found inside a PON network: the connection between the OLT and the Aggregation Switch, the link between the OLT as well as the passive splitter, and the splitter itself. On the other hand, the most recognized Single-Point-of-Failure in Point-to-Point FTTX network would be power failure at access nodes, CTS has solved this with its "Battery Back-up Solution".