How many types of the FTTx?

FTTB/FTTC (Fiber To The Building): The OLT is connected to ONUs in corridors (FTTB) or by the curb (FTTC) using an optical distribution network (ODN). The ONUs are then connected to user terminals using xDSL. FTTB/FTTC is applicable to densely-populated residential communities or office buildings. In this scenario, FTTB/FTTC provides services of certain bandwidth for common users.

FTTD (Fiber To The Desktop): uses existing access media at user homes to resolve drop fiber issues in FTTH scenarios.

FTTH (Fiber To The Home): The OLT connects to ONTs at user homes using an ODN network. FTTH is applicable to new apartments or villas in loose distribution. In this scenario, FTTH provides services of higher bandwidth for high-end users.

FTTO (Fiber To The Office ): The OLT is connected to enterprise ONUs using an ODN network. The ONUs are connected to user terminals using FE, POTS, or Wi-Fi. QinQ VLAN encapsulation is implemented on the ONUs and the OLT. In this way, transparent and secure data channels can be set up between the enterprise private networks located at different places, and therefore the service data and BPDUs between the enterprise private networks can be transparently transmitted over the public network. FTTO is applicable to enterprise networks. In this scenario, FTTO implements TDM PBX, IP PBX, and private line service in the enterprise intranets.

FTTZ (Fiber To The Zone): refers to the fiber to the cell. The FTTx technology is mainly used to access the network fiber, ranging from the central office equipment of the regional telecommunications room to the user terminal equipment. The central office equipment is the optical line terminal (OLT) and the customer equipment is the optical network unit (Optical Network). Unit; ONU) or Optical Network Terminal (ONT).

FTTF (Fiber-To-The-Frontage): This is very similar to FTTB. In a fiber to the front yard scenario, each fiber node serves a single subscriber. This allows for multi-gigabit speeds using XG-fast technology. The fiber node may be reverse-powered by the subscriber modem.