| 摘要 |
An improved telephone system is provided for handling a long distance call made by a mobile modem 5 to a remote land-based terminal 7 as a local call. A register in the system examines the number of the cellular telephone, and the location of the mobile, as represented by the identity of the serving switch. The register then instructs the system to connect the mobile modem 5 to a hard-wired modem 37 local to the visited switch 11. The modem designated is one of a pool of geographically dispersed modems 39 connected to an alternative network 41 such as the TCP/IP based Internet. The call is completed as a local call with data flowing from the mobile modem 5 to the local hard-wired modem 37. From the hard-wired modem 37 the data is then routed over the alternative network 41 to the land-based terminal 7, which is also connected to the alternative network 41. Such an approach eliminates the long distances fee connected with the use of the public switched telephone network 31.
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