Call control system for a subscriber transmission device
US6041052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Feb 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13367
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A call control system can cope with a plurality of exchanges that support call control messages issued in accordance with different protocols. The call control system for use in a subscriber transmission device is located along a transmission path between a plurality of subscribers and a plurality of exchanges. The call control system includes call control message terminal sections, each of which is provided for each of the protocols that are supported by the exchanges for terminating a data link for sending and receiving a call control message to and from a corresponding exchange. A call change data processor is provided in the system for detecting a call and a clearance by a subscriber, and for requesting the call control message terminal section, which supports a protocol that corresponds to a protocol of an exchange to which is connected to the subscriber, to transmit the detected contents to the exchange that supports the protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.