-
公开(公告)号：CA2122934A1
公开(公告)日：1994-12-31
申请号：CA2122934
申请日：1994-05-05
Applicant: IBM
Inventor： BIEHL ROBERT E , HALLOCK CHARLES C , JONES JOE F JR , LANDA ROBERT E , MANDALIA BAIJU D , SEDERHOLM CHARLES H
Abstract: A network adapter (10) and wiring scheme makes use of existing plain old telephone service (POTS) wiring to provide support between analogue devices within the subscriber premise and an Integrated Digital Service Network (ISDN). Moreover, the network adapter and wiring scheme provides further support between digital devices within the premise and the ISDN while concurrently supporting analogue devices.
-
公开(公告)号：CA1319997C
公开(公告)日：1993-07-06
申请号：CA609856
申请日：1989-08-30
Applicant: IBM
Inventor： DAVIS GORDON T , LANDA ROBERT E , MANDALIA BAIJU D , VAN DEN BERG JAN W , VAN VOORHIS DAVID C
Abstract: BC-9-88-008 SPECIALIZED COMMUNICATIONS PROCESSOR FOR LAYERED PROTOCOLS A special purpose communications protocol processor (CPP) provides more efficient processing of layered communication protocols -- e.g. SNA (Systems Network Architecture) and OSI (Open Systems Interconnection) --than contemporary general purpose processors, permitting hitherto unavailable operations relative to high speed communication links. The CPP contains special-purpose circuits dedicated to quick performance (e.g. single machine cycle execution) of functions needed to process header and frame information, such functions and information being of the sort repeatedly encountered in all protocol layers, and uses instructions architected to operate these circuits. The header processing functions given special treatment in this manner include priority branch determination functions, register bit reshaping (rearranging) functions, and instruction address processing functions. Frame processing functions so handled include CRC (cyclic redundancy check) computations, bit insertion/deletion operations and special character detection operations.
-
Search Results
2
records
(took 0.031 seconds)
