Packet terminal and packet communication network
US6055238A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Sep 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/563
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication network system comprising pairs of connection lines (3) composed of input lines and output lines, a switchboard (1) which relays a packet received from one of the input lines to one of the output lines specified by the header information contained in the packet, and terminals (2) connected to the switchboard through the connection lines (3). Each terminal (2) is provided with a communication controller (222 or 23a) which converts call control messages to be transmitted to the switchboard (1) and information messages to be transmitted to other terminals into packets of predetermined formats, sends them through the input lines, and converts packets received through the output lines and the switchboard (1) into messages. A master terminal (2a) which is one of the terminals is provided with a call processing program (224) for performing the call control of the switchboard (1). The switchboard (1) is provided with a line interface (12) for selectively relaying call controlling packets received through the input lines to the master terminal. The master terminal (2a) actuates the call processing program in response to call control messages converted from received packets b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.