In LLS-C1 configuration, the DU operates PTP in T-BC mode, sourcing the network time from a Precision Real-Time-Clock/Telecom Grandmaster (PRTC/T-GM) in Midhual. When PTP runs in T-BC mode, one port functions as a Client to a remote PRTC/T-GM and other ports function as Servers, providing time to downstream devices.
In the following example topology, PF0 on the DU receives time from the Cell Site Router (CSR) functioning as T-GM and distributes time to the RUs connected on PF1 and PF3.
You can configure a network function in LLS-C1 T-BC mode by using either VMware PTP Timing Pod or the Systemd service.
