Interface circuit for interconnecting circuit switched and packet switched systems
US4723238A · kind A · utility
58Cited by
4References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 24, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Mar 24, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interface circuit is described for interconnecting a packet switched system to a circuit switched system which enables a uniform dialing plan to be utilized to establish intra-system or inter-system connections. This is accomplished by assigning each terminal of the packet switched system a unique terminal address similar to the extension number used for terminals of the circuit switched system. The interface also distinguishes data call set-up requests from other control commands received from the packet switched system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.