In FIG. 24B, which is similar to FIG. 24A, the first subscriber selects the ???phone bill??? icon 1148B and messages the EPCS 58 for detailed billing data in step 1218B. The EPCS entity 58 messages the billing entity 56 to log the ???view bill??? request event in step 1220B. The EPCS entity 58 presents detailed bill data to the user entity 52 in step 1222B.