- In the G-PON layer, a T-CONT, that is identified by Alloc-ID, is the basic control unit. The concept of a port, identified by Port-ID, is used for multiplexing traffic flows over a T-CONT in GEM service.
- There are three important concepts:
1. ONU
2. T-CONT
3. GEM Port
- One GPON port can access up to 64 ONU's.
- One ONU can contain 1 or up to 8 tcont.
- One tcont can contain 1 or multiple Gemport.
