Rich calling line handling in call setup signalling
US6757533B2 · kind B2 · utility
12Cited by
8References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Mar 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.