There are many types of ONUs (Optical Network Units) available to cater to different network architectures, bandwidth requirements, and service needs. Some key categories include:
GPON ONUs - These support Gigabit-capable Passive Optical Networks using 2.5Gbps downstream and 1.25Gbps upstream wavelengths. GPON ONU routers deliver data, video and voice services.
XGPON ONUs - These provide 10Gbps downstream and 2.5Gbps upstream in 10G PON networks. XGPON ONU routers enable next-gen broadband services.
EPON ONUs - Designed for 1Gbps symmetric Ethernet PON networks. EPON ONUare ideal for business and backhaul applications.
1U ONUs - Rackmount ONUs occupying 1U space for Carrier-class applications.
Desktop ONUs - Compact ONUs suitable for homes and SOHO.
SFP ONUs - Small form factor pluggable ONUs accepting SFP transceivers.
Outdoor ONUs - Housed in weatherproof enclosures for outdoor installation.
PoE ONUs - Powered via fiber cable from OLT using Power over Ethernet.
AC/DC ONUs - Require external AC or DC power adapters.
ONUs with WiFi - Have inbuilt wireless routers for WiFi connectivity.
ONUs with CATV - Support RF video overlay for Cable TV services.
ONUs with POTS - Provide telephone connectors for analog voice.
ONUs with antenna - Have external antenna ports for better wireless coverage.
Bridge ONUs - Transparently pass traffic between subscriber devices and OLT.
Router ONUs - Have routing capabilities to direct and shape traffic.
1G ONU GPON - 1Gbps Ethernet uplink port.
10G ONU GPON - 10Gbps uplink for high speed connectivity.
ONU EPON - Supports 1Gbps EPON uplink.
In summary, ONUs are available in diverse configurations to meet different deployment needs like high-bandwidth, converged services, enterprise access, fiber deep architectures etc. Network operators carefully evaluate parameters like technology, interfaces,bridge/routing functionality, form factor, power requirements and environmental compliance to select the optimal ONU model.
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