Method and apparatus for facilitating the making of wireless telephone calls
US5479484A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | May 31, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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 th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.