Telecommunications device for use between an analog telephone and a packet network
US7729364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2005 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5671
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication device is coupled to an analog telephone and a packet network. The communication device detects an off-hook condition for the analog telephone and transfers a dial tone to the analog telephone, detects digit tones from the analog telephone that indicate a called number and responsively transfers a first message indicating the called number to the packet network, receives a second message from the packet network indicating that a called party associated with the called number is being alerted and responsively transfers a ring tone to the analog telephone, receives a third message from the packet network indicating that the called party has accepted the communication session and responsively stops the transfer of the ring tone to the analog telephone, exchanges analog voice signals with the analog telephone, exchanges voice packets with the packet network, and interworks between the analog voice signals and the voice packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.