Broadcast conferencing arrangement
US4766592A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1987 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Aug 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/205
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for setting up a digital broadcast call from a transmitting station to a group of receiving stations over a public switched network. A time slot interchange unit (TSIU) is used to replicate a signal, received from a transmitting station at an input port of the TSIU, to a group of output ports of the TSIU for transmission to a group of receiving stations. A data base, shared by a group of switching systems of the public switched network, includes data, activated during a preselected period of time, to translate each of two preselected numbers to one of two corresponding internal routing numbers of the switched network for accessing the input port and output ports of the TSIU, respectively. When the transmitting station dials the first preselected number and each of the receiving stations dials the second preselected number, the data base translates these numbers into the corresponding internal routing numbers for setting up a connection from the transmitting and receiving stations to the incoming port and the outgoing ports, respectively, of the TSIU. Advantageously, the broadcast circuit is made available to the broadcast conferees for a period of time limite…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.