公开(公告)号：DE3575829D1

公开(公告)日：1990-03-08

申请号：DE3575829

申请日：1985-10-30

Applicant: IBM

Inventor： BLANC ALAIN ,  JEANNIOT PATRICK ,  SPALMACIN-ROMA SYLVIE

IPC: H04Q11/04 ,  G06F9/48 ,  G06F13/22 ,  H04B1/66 ,  H04J3/06 ,  H04M1/253

Abstract: The system is made to concentrate n voice signals over a same high speed channel using a single Unit Processor. The data transfers between the Unit Processor and a set of Signal Processors are managed by a counter loaded by the Unit Processor with a predetermined value selected according to the system architecture. The counter is made of two parts serially connected , the first one made for sequentially providing an interrupt request to the Unit Processor and the second one driving a decoder providing signals for serially scanning the set of signal processors and providing time slots for data transfers between Unit Processor and Signal Processors.

公开(公告)号：DE3889214D1

公开(公告)日：1994-05-26

申请号：DE3889214

申请日：1988-01-22

Applicant: IBM

Inventor： BADAOUI MOHAMED ,  DAMBRICOURT RICHARD ,  FRANQUENOUILLE JEAN-PAUL ,  GARCIA CHRISTIAN ,  SPALMACIN-ROMA SYLVIE ,  GRANGER YVES

IPC: H04L69/14 ,  G06F12/06 ,  G06F13/22 ,  G06F13/38 ,  H04L12/403 ,  H04L12/52

Abstract: A scanning protocol is provided for the scanning of a plurality of the serial transmission lines (26) connecting users' devices to the scanning means (10, 16, 17) of a communication device, said lines being coupled to the scanning means through line interface couplers (LICs) (20) having each a wired address (n, n min , ...) known to the scanning means. This scanning protocol requires that for each LIC configuration, a given LICn, having a wired address n, be re-addressable with a logical address n min corresponding to the wired address of any other active LICn min , in order to determine, for said LIC configuration, the shortest possible scanning scheme including all the active LICs. The re-addressing of a LICn of wired address n, with a logical address n min , includes the steps of : - resetting the LICn to be affected a logical address n min , - setting the logical address n min into LICn; - locking said logical address n min into said LICn, and - enabling the lines (26) connected to LICn re-addressed with logical address n min .

公开(公告)号：DE3889214T2

公开(公告)日：1994-11-17

申请号：DE3889214

申请日：1988-01-22

Applicant: IBM

Inventor： BADAOUI MOHAMED ,  DAMBRICOURT RICHARD ,  FRANQUENOUILLE JEAN-PAUL ,  GARCIA CHRISTIAN ,  SPALMACIN-ROMA SYLVIE ,  GRANGER YVES

IPC: H04L69/14 ,  G06F12/06 ,  G06F13/22 ,  G06F13/38 ,  H04L12/403 ,  H04L12/52

Abstract: A scanning protocol is provided for the scanning of a plurality of the serial transmission lines (26) connecting users' devices to the scanning means (10, 16, 17) of a communication device, said lines being coupled to the scanning means through line interface couplers (LICs) (20) having each a wired address (n, n min , ...) known to the scanning means. This scanning protocol requires that for each LIC configuration, a given LICn, having a wired address n, be re-addressable with a logical address n min corresponding to the wired address of any other active LICn min , in order to determine, for said LIC configuration, the shortest possible scanning scheme including all the active LICs. The re-addressing of a LICn of wired address n, with a logical address n min , includes the steps of : - resetting the LICn to be affected a logical address n min , - setting the logical address n min into LICn; - locking said logical address n min into said LICn, and - enabling the lines (26) connected to LICn re-addressed with logical address n min .