| 摘要 |
A method and apparatus for making least-cost non-local telephone calls. An identification code of a customer and a plurality of carrier codes associated with the identification code for identifying telephone call carriers are stored in a memory (#8) which is accessible by a computer (#6) at a universal exchange (#2). The universal exchange receives the customer identification code and a destination telephone number from the customer. The computer processes the received number and carrier codes corresponding to the customer identification code in accordance with respective rate schedules for those carriers and a least-cost routing algorithm, thereby determining a least-cost carrier for connecting the customer to the station identified by the destination number. The computer then controls a telephone switching matrix (#4) to route the telephone call to an exchange of the least-cost carrier.
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