公开(公告)号：DE3586758T2

公开(公告)日：1993-04-22

申请号：DE3586758

申请日：1985-04-30

Applicant: IBM

Inventor： BELLOC JACQUES ,  CHOLAT-NAMY JEAN ,  CHOQUET MICHEL ,  HUON SIMON ,  PILOST DANIEL ,  SPAGNOL VICTOR ,  DE SAINT MICHEL FRANCOIS

IPC: H04L69/40 ,  H04L1/24 ,  H04L12/26

Abstract: A DTE can control the modems attached thereto by transmitting command messages over the data path and analyzing report messages supplied by the modems in return. Each command message is identified by a specific header. A command message intended for a remote modem (34) is intercepted by the local modem (30) and reformatted so as to obtain a supervisory message that is then transmitted at the rate of one bit per baud. A command message intended for a remote multichannel modem (48) is transmitted either by a supervisory message or in the data mode of operation.

公开(公告)号：DE3586758D1

公开(公告)日：1992-11-19

申请号：DE3586758

申请日：1985-04-30

Applicant: IBM

Inventor： BELLOC JACQUES ,  CHOLAT-NAMY JEAN ,  CHOQUET MICHEL ,  HUON SIMON ,  PILOST DANIEL ,  SPAGNOL VICTOR ,  DE SAINT MICHEL FRANCOIS

IPC: H04L69/40 ,  H04L1/24 ,  H04L12/26

Abstract: Data terminal equipment (10) sends commands identified by specific headers to the modems over a channel, and analyses the return messages. A command to a distant modem (34) is intercepted by the local modem (30) and its format is changed into a supervisory message with a different header, for transmission at the rate of 1 bit per baud. For a distant multichannel modem (48) the command is sent either by way of a supervisory message or in data mode. Second level modems (54,58) also may be monitored by addressed data-mode comands. commands.