Hello, everyone!
Today, I want to continue to explain the XG(S)-PON technology. In previous articles, I explained the key technologies of XG(S)-PON. Now, I want to explain FTTx networking.
XG(S)-PON, as well as GPON technology, is the P2MP (Point to Multi Point) type. There are a number of possible scenarios, and it depends on the location of the ONU device.
The most important scenarios are the following:
FTTH (Fiber To The Home),
FTTB (Fiber To The Building),
FTTC (Fiber To The Curb),
FTTM (Fiber To The Mobile Base Station), and
FTTO (Fiber To The Office).
We can see these scenarios in the next figure.
Figure 1. FTTx
FTTH solution is a solution where the ONU device is located at the user's house or apartment. This type of ONU device is called an ONT (Optical Network Terminal). This is one of the best solutions.
An FTTB solution is a solution where the ONU device is located in a building and is intended for all users of that building. Means one or more common devices for all users of the building. That ONU device is called MDU (Multiple Dwelling Unit). There are UTP cables (LAN) or telephone cables (DSL) between the MDU and the users.
The FTTC solution is a solution where the ONU device is located in an outdoor cabinet. There are telephone cables from the outdoor cabinet to the users. The ONU device in this solution is called MxU (Multiple x Unit).
In general, FTTB and FTTC are solutions that are implemented in the event that for some reason solutions such as FTTH cannot be implemented.
FTTM is a solution used to connect mobile base stations. In general, these solutions will have a great future with new generations of PONs such as 25G-PON, 50G-PON, etc. Especially now that the current mobile network is 5G, where we have a much larger number of base stations than was the case with previous generations.
FTTO is one of the OLAN solutions. OLAN has three solutions: FTTO, FTTD and FTTH. The ONU device is located in the office and provides a number of different services.
This is the end of this article. I will continue to write about this topic in the next article >> XG(S)-PON (10): Evolution from GPON to XG(S)-PON.
Thank you!
