Description: This object specifies the value of the minimum CPE signature expected from ATU-R during training. The value of the CPE signature corresponds to the software version of the ATU-R.

If the CPE signature advertised by an ATU-R is less than the value of this object, then the ATU-C will be placed into an idle state, thereby preventing the line from training.

In addition, the agent increments the value of the cAdslAtucCapPerfInitFailures object for each attempt to train by an ATU-R advertising a CPE signature less than the value of this object. When a management client observes the value of cAdslAtucCapPerfInitFailures increasing, it should retrieve the value of the adslAturInvSerialNumber object (for more details, see the ADSL-LINE-MIB) . This value of this object reflects the CPE signature advertised by an ATU-R implementing the CAP line code. If the CPE signature of the ATU-R is not known, the value of the adslAturInvSerialNumber object should be a zero-length string.