Dial-up line modem directly compatible with mainframe host having bisynchronous communication protocol
US4853954A · kind A · utility
2Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Jan 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The modem of this invention is capable of direct connection to a communication Host associated with a mainframe computer which uses a bisynchronous (bisync) protocol so that the Host believes a valid terminal is continuously connected regardless of whether the modem is online or offline. This permits communications to be established with the mainframe over the public switched telephone network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.