A pointer to a 'map-class frame-relay' entry applicable for this row. A 'map-class frame-relay' is an entry in the frMapClassTable. The value of this object must be identical to the value of the desired entry's frMapClassName in the frMapClassTable. NOTES: 1. This object can only a point to an existing entry. Trying to set this object to a value that does not pertain to an existing entry in frMapClassTable shall fail. 2. An entry in the frMapClassTable can be deleted only when it is not pointed to by any entry in this table (frStaticCircuitTable). 3. The map-class is activated only when the containing interface has Frame-Relay Traffic-Shaping enables. See description of ifTableXtndFrTrafficShaping for details about FRTS. 4. The frMapClassTable contains a persistent, non-deletable default entry, by the name 'default'.