Telecommunication equipment is very obsolescent product from commercial point of view and its industry is large scale as well as its inter-industrial linkage effect is enormous. Therefore investment in it should be carefully carried out. However decision making on this problem is very difficult because the environment of investment is too much complex with multiple objectives. Goal-programmed Investment Model in Telecommunication Equipment is discussed in this study to solve the above problem. The effectiveness and workability of this model is verified by Telephone Exchange Case through computer program.