EcimDerivedString with length (1..100) constraint.The value of this attribute must not be the same value as of mtasShIfMmtelGroupServiceInd, mtasShIfMmtelServiceProfileInd, mtasShIfMmtelServiceNumberInd or mtasShIfMmtelSchedConfInd.
string
MtasShIfMmtelServiceIndDT [ 1..100 ]