System Timing

If network timing is required for the synchronous interfaces in a 7705 SAR, a timing subsystem is used to provide a Stratum 3 quality clock to all synchronous interfaces within the system. The clock source is specified in the config>port>tdm>ds1 | e1> clock-source context.

This section describes the commands used to configure and control the timing subsystem.

• Entering Edit Mode

• Configuring Timing References

• Configuring IEEE 1588v2 PTP

• Configuring QL Values for SSM

• Using the Revert Command

• Other Editing Commands

• Forcing a Specific Reference

CLI Syntax:

config>system>sync-if-timing 
    abort
    begin
    commit
    external
        input-interface 
            impedance {high-impedance | 50-ohm | 75-ohm}
            type {2048khz-G703 | 5mhz | 10mhz}
        output-interface
            type {2048khz-G703 | 5mhz | 10mhz}
    ref-order first second [third]
    ref1
        source-port port-id [adaptive]
        no shutdown
    ref2
        source-port port-id [adaptive]
        no shutdown
    revert