Communications network
US6330312A · kind A · utility
15Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/0148
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a communications network, the duration of a pre-answer phase of a call is recorded with reference to a number of signalling events associated with the set-up of the call. A billing record may be generated corresponding to the recorded pre-answer phase and may be used, for example, to bill customers carrying out stealth polling of terminals on an ISDN network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.