| Description | This variable specifies the TCM mode at the entity.
The value operational(1) means that TCM Overhead (TCMOH)
processes (see ITU-T G.798) shall be
performed and consequent actions for AIS, Trail
Signal Fail (TSF), Trail Signal Degraded (TSD) shall be
initiated in case of defects.
The value monitor(2) means that TCMOH processes shall be
performed but consequent actions for AIS, Trail
Server Failure (TSF), Trail Server Degraded (TSD) shall _not_ be
initiated in case of defects.
This object is applicable only when the value of
optIfODUkTtpPresent is false(2) and also either one of the
following three cases holds:
(i) optIfODUkDirectionality has the value bidirectional(3), or
(ii) optIfODUkDirectionality has the value sink(1) and
optIfODUkTCodirectional has the value true(1), or
(iii) optIfODUkDirectionality has the value source(3) and
optIfODUkTCodirectional has the value false(2).
It must not be instantiated in rows for all other cases. |