This describes how to configure clocks for the BSC when the BM and TC are configured in different subracks. The BSC clocks are responsible for the synchronization of boards in each subrack.
Configuring the Line Clock for the GTCS
The line clock of the BSC is provided by the MSC. When the BM and TC are configured in different subracks, each GTCS extracts the link clock from the A interface and uses the link clock as its reference clock.
Configuring the 8K Reference Clock for the GTCS
This describes how to configure the 8 kHz reference clock for the GTCS. Each GTCS extracts the line clock from the A interface and uses the line clock as its reference clock. The GEIUA/GOIUA processes the line clock and generates a 8 kHz clock signal, which is used as the synchronization clock for the GTCS.
Configuring the Line Clock for the GMPS
This describes how to configure the line clock for the GMPS. The GMPS extracts the line clock from the GTCS through the Ater interface. This line clock is used as the input clock for the GGCU in the GMPS.
Configuring the System Clock
This describes how to configure the system clock, that is, the input clock for the GGCU. The input clock for the GGCU can be the BITS clock or the line clock extracted by the GEIUT/GOIUT from the GTCS connected. The GGCU processes the input clock and generates the 8 kHz clock, which is used as the transmission synchronization clock and the time synchronization clock for the boards in the GMPS or GEPS.
Configuring the 8 kHz Reference Clock for the GMPS
This describes how to configure the 8 kHz clock provided by the backplane of the GGCU as the 8 kHz reference clock for the GMPS. The 8 kHz reference clock serves as the synchronization clock for the boards in the GMPS.
Configuring the 8K Reference Clock for the GEPS
This describes how to configure the 8 kHz clock provided by the GGCU as the 8 kHz reference clock for the GEPS. The 8 kHz reference clock serves as the synchronization clock for the boards in the GEPS.