公开(公告)号：DE68914831T2

公开(公告)日：1994-11-17

申请号：DE68914831

申请日：1989-06-29

Applicant: IBM

Inventor： THERIAS PHILIPPE ,  DALMAS PHILIPPE ,  MICHEL PATRICK ,  LE PENNEC JEAN-FRANCOIS ,  ESTEBAN DANIEL

IPC: H04L69/14 ,  H04L1/00 ,  H04L12/00

Abstract: A Terminal adapter for a telecommunication network having a receiver (400) for multiple HDLC communication channels. The receiver includes a BCC calculator (460) for computing and checking the validity of a received HDLC CNM frame. The terminal adapter further includes means (340, 350, 360) for detecting the reception of a specific CNM header included into a CNM frame on anyone of said HDLC communication channels and means (394, 530/X) responsive to said detection for setting the BCC calculator (460) to a predefined state. The latter state corresponds to the state of the BCC calculator (460) after a computation of BCC for the specific CNM header. Therefore the BCC calculator (460) can proceeds with computation of said BCC for said CNM frame.

公开(公告)号：DE68914831D1

公开(公告)日：1994-05-26

申请号：DE68914831

申请日：1989-06-29

Applicant: IBM

Inventor： THERIAS PHILIPPE ,  DALMAS PHILIPPE ,  MICHEL PATRICK ,  LE PENNEC JEAN-FRANCOIS ,  ESTEBAN DANIEL

IPC: H04L69/14 ,  H04L1/00 ,  H04L12/00

Abstract: A Terminal adapter for a telecommunication network having a receiver (400) for multiple HDLC communication channels. The receiver includes a BCC calculator (460) for computing and checking the validity of a received HDLC CNM frame. The terminal adapter further includes means (340, 350, 360) for detecting the reception of a specific CNM header included into a CNM frame on anyone of said HDLC communication channels and means (394, 530/X) responsive to said detection for setting the BCC calculator (460) to a predefined state. The latter state corresponds to the state of the BCC calculator (460) after a computation of BCC for the specific CNM header. Therefore the BCC calculator (460) can proceeds with computation of said BCC for said CNM frame.