Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1995-07-21
1996-04-30
Bost, Dwayne D.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 59, 455 332, H04Q 722
Patent
active
055132472
ABSTRACT:
The lack of uniformity for accessing wireless carriers to reach roaming wireless telephones prevents nationwide wireless telephone service from being provided in a seamless manner by an automated system that accesses the roamer access ports to connect a caller to a wireless telephone station in a manner such that the roaming nature of the called wireless telephone station is transparent to the caller. This problem is overcome, by a method for placing a telephone call to a wireless telephone station, method including the steps of: a) storing in a data base an association between respective (i) roamer access ports, (ii) mobile switching centers and (iii) one of a predetermined set of instructions, i.e., rules, which are executed by the machine in order to access wireless telephone service at mobile switching centers; b) receiving an indication of the particular mobile switching center presently serving the wireless telephone station; c) looking up the indication in the data base to retrieve (i) a particular roamer access port associated with the particular mobile switching center serving the wireless telephone at the location and (ii) a rule to access wireless telephone service at the mobile switching center via the roamer access port associated with the mobile switching center; d) placing a call to the roamer access port; and e) executing the instructions of the retrieved rule for the roamer access port so as to cause the mobile switching center to attempt to establish a connection to the wireless telephone station.
REFERENCES:
patent: 5090050 (1992-02-01), Heffernan
patent: 5353331 (1994-10-01), Emery et al.
Mukerjee Sandip
Utano Ralph
AT&T Corp.
Bost Dwayne D.
Rosenthal Eugene J.
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