EPON (Ethernet Passive Optical Network) is a fiber-optic access technology commonly used by ISPs for FTTH (Fiber to the Home) and FTTB (Fiber to the Building) deployments . The "4 Port" designation indicates the device has 4 PON ports (for OLT units) or 4 user-facing Ethernet ports (for ONU/ONT units) .
The 4-port EPON OLT is a compact 1U rack-mounted device deployed at the ISP's central office . With 4 downstream EPON ports and uplink options (GE RJ45 + SFP slots), it provides high-bandwidth fiber access for up to 256 end-users (using a 1:64 split ratio per PON port) .
Key Features:
Full Layer 2 Switching (VLAN, QinQ, QoS, IGMP Snooping)
CLI/Telnet/SNMP/WEB Management
Redundant Power Option for Carrier-Grade Reliability
20km Transmission Distance with PX20+ Optics
The EPON ONU/ONT (often called an HGU - Home Gateway Unit) is installed at the customer's premises. It converts the fiber optic signal into standard Ethernet, which can then be connected to computers, routers, TVs, or telephones .
Key Features:
4 Gigabit Ethernet Ports for high-speed wired connections
Auto-detection for EPON/GPON (Dual-mode XPON models)
Supports DBA (Dynamic Bandwidth Allocation)
Web-based Management Interface
Optional Dual-Band WiFi (AC1200) for wireless connectivity
