Method of updating a unique call back number for a wireless emergency call
US7715821B2 · kind B2 · utility
27Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Feb 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In the method of updating a unique call back number for a wireless unit having originated an emergency call, a unique call back number for the wireless unit is updated (e.g., changed or added to a list of unique call back numbers) based on a received unique call back number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.