For Sean Noffke fans, in the discovery there is a record of a call that he took during this time. It is labeled NEN ('Call Source: TEL'), but it seems likely that it's the 911 call made by Sierra McLendon.
Whatever that call is, it is the one Noffke took. Sean Noffke did not take any of the other 911 calls related to this case on 2/26/12.