The MPT slot & port, or RAU slot should be displayed on the Air Interface tab instead of the internal SDN-R ID. Each vendor has H/W that is similar, but is named differently. Ericsson uses RAU's, but Nokia would be a MPT.  The identifiers for each vendor should be similar enough and part of the model to identify a Radio path from a slot and port. The last known state should be retained in a connection lost state. This would be used to verify and rebuild a site.

More clarification:

Shelves can have up to 18 radios, when a failure occurs we need to know which radio it is that failed.  In the past it only showed the radio failure with no relevant information as to what radio it was.  For example it should say demod failure 3.5.  Meaning the radio in slot 3 port 5 has a demodulator failure.

Last known state it used when we have to rebuild sites by hand.  The SAM retains the last information that was displayed prior to the radio becoming non responsive.  Meaning the last frequencies, power, modulation and information needed to recover still exists from the last state when the device was communicating.