Abstract: A shelf unit with a spring in a communication system includes a front plate having a fixing portion and a projecting portion with a recessed portion backwardly extended at both ends thereof, respectively, and a spring inserted into the projecting portion of the front plate. The spring having a substantial v-shaped configuration includes a plurality of spring members defined in a predetermined size at one side thereof and a body integrally formed at the other side thereof. Each of the spring members includes an elastic portion having a bending portion inwardly bent at an end thereof and a compressing portion provided within the elastic portion and inwardly bent relative to the elastic portion, thereby allowing the compressing portion to be tightly fitted into the recessed portion.