| Description | Specifies the monitor point for the ODUk Path non-intrusive
monitoring function. The value source(2) is not allowed
if the corresponding instance of optIfODUkDirectionality
has the value sink(1), and the value sink(1) is not allowed
if the corresponding instance of optIfODUkDirectionality
has the value source(2). Either the value sink(1) or
source(2) is allowed if the corresponding instance of
optIfODUkDirectionality has the value bidirectional(3).
The value sink(1) means monitoring at the sink direction
path signal of the ODUk CTP.
The value source(2) means monitoring at the source direction
path signal of the ODUk CTP. Monitoring the source direction
of an ODUk CTP is necessary in those cases where the ODUk CTP
is at an SNCP (Subnetwork Connection Protection) end (e.g., see
Figure I.1.2/G.874.1). If one would like to get the performance
of the protected connection, one cannot use the NIM function
at both ODUk CTP sinks (before the matrix), instead one should
monitor the signal at the source ODUk CTP after the matrix. |