Call charging notification
US6928150B2 · kind B2 · utility
21Cited by
12References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2001 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/8108
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An approach for providing charging information of a call established over a data network is disclosed. A communications system includes a user agent that initiates a call to another user agent according to an application layer protocol. The system also includes a network element that assists in establishing the call and forwards information indicating that the call is chargeable to the user agent. The present invention has particular applicability to SIP (Session Initiation Protocol) IP (Internet Protocol) telephony services.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.