Validating a forward-to-number within a mobile telecommunications system
US5966653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1996 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Jun 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/42153
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A request for call forwarding activation along with forward-to-number is received from a mobile station via one of the data channels such as a Stand-alone Dedicated Control Channel (SDCCH). The activation request itself is transported by an Unstructured Supplementary Service Data (USSD) message. The serving mobile switching center (MSC) analyzes the forward-to-number and establishes a speech connection with the mobile station by calling back the mobile station. Next, the MSC originates an outgoing call towards the forward-to-number and, as a result, establishes a speech connection between the mobile station and the telephone terminal associated with the forward-to-number. By establishing a speech connection between the two parties, the mobile subscriber requesting the call forwarding activation can verbally verify the forward-to-number. As an alternative, TCAP messages can be communicated between the serving MSC and the local exchange serving the forward-to-number to request the local exchange to verify the validity of the forward-to-number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.