What is the difference between ONT and ONU?

An ONT can be understood as an ONU (Optical Network Unit), but in a strict sense it is a part of the ONU.
The difference between the two is that the ONT is an optical network terminal and is located directly at the user side; while the ONU is an optical network unit, and there may be other networks between the user and the user, such as a gateway device that can be connected to the xDSL or Ethernet access port under the ONU. Access to the network terminal.

Product Introduction:

GL-E8011U-H is EPON terminal device,work with OLT,it can provide Internet,VOIP,V..It is based on mature and stable cost-effective EPON technology,providing 1 PON port,2 10/1000M,1 VOIP port.Adopt single fiber WDN technology(downlink 1490nm,uplink 1310nm),require only one fiber to connect with OLT,the longest transmitting distance can be 40KM,support power down report function,support local WEB management function.

Product Interface:

Ports:hardware connection, from left to right as per connection direction, connection sequence:

• RJ11 Telephone Port;Internet port 2 to 1;Reset button;USB port;DC12V port;Power switch
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Port Features:

• HGU ONU product modality,support bridge and NAT mode. 
• BOB product process 
• 802.11b/g/n wireless access 
• Provide Voip/fxs Port,support connecting normal telephone 
• 12V/1.5A external power

Product Specification:

1) Port:Power:external power 12V/1.5A;Internet access:2pcs.support 10/100/1000M self-adaption;Optical port:one SC/PC port;Telephone Port:one RJ11 Telephone Port;2)hardware key equipment specification;CPU:MAC built-in 800Mhz ARM processor

3) Product size:Product size:163X125X50 mm 

4) Reliability and environmental suitability

storage temperature humidity:-10°C-55°C 5%-95% non-condensing  Working temperature humidity:-10°C-50°C  5%-95% non-condensing.