Conversion of
US5467350A · kind A · utility
4Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Jul 13, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/216
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for transmitting X.25 communications over the D-channel of an ISDN link. This is achieved by terminal adapters connected between an X.25 terminal and an ISDN connection which contain converters to convert X.25 LAPB frames into LAPD frames and vice versa. The conversion process involves directly copying fields from the incoming LAPB frame into a LAPD frame with the minimum amount of verification. Essentially the only checking performed is to examine the number of octets in each field of the incoming frame to ensure that the conversion process itself does not fall down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.