How ONT get its system time synchronization with upper NE?
When ONTs get online, it will get time from OLT with OMCI protocol; if ONT configure SNTP service, then SNTP will be a higher priority than OCMI time synchronization, so ONT will get time from SNTP server configured.
SNTP: Simple Network Time Protocol.
A protocol that is adapted from the Network Time Protocol (NTP) and synchronizes the clocks of computers over the Internet.
OMCI is a type of ITU-T Recommendation G.984.4-compliant configuration and transmission channel, which is used to transmit OMCI messages over dedicated ATM PVCs or GEM ports established between an OLT and an ONT. The OMCI messages are used for discovering ONTs for management and control.
From group: Transport&Access Network
Thank you!