Terminal adapter having a multiple HDLC communication channels receiver for processing control network management frames
US5043989A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Sep 1, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/324
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A terminal adapter for a telecommunication network having a receiver for multiple HDLC communication channels. The receiver includes a BCC calculator for computing and checking the validity of a received HDLC CNM frame. The terminal adapter further includes a device for detecting the reception of a specific CNM header included in a CNM frame on any of the HDLC communication channels and responsive to the detection for setting the BCC calculator to a predefined state. The latter state corresponds to the state of the BCC calculator after a computation of BCC for the specific CNM header. Therefore the BCC calculator can proceed with computation of said BCC for the CNM frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.