This attribute displays the most recent time that an SVC DLCI has
failed to get a message block due to message block congestion.
Exceptional behavior can occur due to this. The DLCI that has most
recently encountered this is indicated by the
lastDlciWithMsgBlockCongestion attribute. However, all SVC
DLCIs may be affected.
The initial value of this attribute is 0000-00-00 00:00.