A description of the sender (affected managed object). The description is human readable, unique, and easy to parse. It consists of a single word describing the kind of sender, optionally followed by a space and a complete SNMP index value for the MIB table related to the sender. The space is omitted if there is no index (pegasusSystem only). The index value is expressed as a sequence of numbers separated by dots. The last number may actually be a string (only with dslInterface, 'ltu' or 'ntu'). The table below contains schematic representations for all types of objects, with ranges for the index values, and examples. In the table, s is a slot number, l a link or trunk number, i an interface number, n a user port number (on the Iad) or a logical comm channel number. dataPort s.l s=1,0<l<6 dataPort 1.3 dslInterface s.l.t 4<s<13,0<l<9,t=ntu|ltu dslInterface 5.1.ltu dslLink s.l 4<s<13,0<l<9 dslLink 5.1 dataCard s s=1 dataCard 1 dslCard s 4<s<13 dslCard 12 iad s.l 4<s<13,0<l<9 iad 5.1 v5Card s s=3 v5Card 3 pegasusSystem pegasusSystem v5Interface s.i s=3,0<i v5Interface 3.1 v5IsdnPort s.l.n 4<s<13,0<l<9,0<n<5 v5IsdnPort 5.1.1 v5Lcc s.i.n s=3,0<i,0<n v5Lcc 3.1.3 v5Link s.l s=3,0<l<9 v5Link 3.1