METRODATA LTD
WCM5100
Quick Start Guide
76-02-087 Rev A
39 of 62
4.2.2.7 Timing
This configuration item determines the source of timing for the SDH WAN link. When used
with “dark fibre” one or both ends should be configured for Internal Timing. When
operating and connected to an SDH network port it should be configured for loop timing.
Internal
Timing Source set to local oscillator
Loop
Transmit Timing sourced from SDH Receive
4.2.2.8 C1/J0 Selection
Older SDH equipment defines the C1 byte within the section overhead. More modern
equipment redefined this overhead byte as Regenerator Section Trace.
When configured as J0, a section trace string, or upto 16 characters, may be defined to
identify the link.
4.2.2.9 J0 Transmit
This menu item, only available when J0 mode is selected, allows the user to define a
section trace string. This string may be upto 16 characters as shown:
