This Standard specifies the requirements for the equipment model and specifications, protocol requirements, system basic functions, functional capacity and performance related to service bearing, system protection, operation and maintenance management, equipment environment and electrical safety of the gigabit-capable passive optical network (GPON) system. This Standard applies to the OLT and ONU equipment for the GPON system under the network environment of China Telecom. The type of service might be carried by the GPON system includes Ethernet/IP service, voice service, TDM service, and CATV service. TDM service refers to the E1 circuit emulation service. The GPON system shall have the capacity of carrying the Ethernet/IP service. It is recommended to use voice service. TDM and CATV services are considered as optional supports. The GPON system shall support to use IPv4 and IPv6 to carry the above services simultaneously.
