Call handling scheme to reduce roaming charges
US8068830B2 · kind B2 · utility
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6Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Nov 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A second switch receives an indication from a roaming network that a call forwarded by the roaming network has been dropped by the roaming network, and in response to receiving the indication, forwards the call from a first switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.