Error correction for DTMF corruption on uplink
US8615280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2013 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Apr 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/1091
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Aspects relate to provision of enterprise call capabilities to mobile devices. For example, a mobile device can indicate, over a data channel, that a PBX is to make a call on its behalf to a called party. The PBX can call back the mobile device, call the called party, and bridge those call legs to establish the call. The mobile device can employ mechanisms that a particular incoming call is made by the PBX. These mechanisms can include using ANI information, sending, and receiving audible verification codes over the voice channel established after answering the incoming call. The verification codes can be selected based different behaviors of the mobile devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.