公开(公告)号：CA2094406A1

公开(公告)日：1993-11-22

申请号：CA2094406

申请日：1993-04-20

Applicant: IBM

Inventor： JENNESS ROBERT V ,  MAGUIRE SANDRA A ,  MOORE VICTOR S ,  WU DAVID C

IPC: H04L29/06 ,  H04L29/08 ,  H04M11/06 ,  H04L27/10

Abstract: First and second data processing terminals (12, 28) are coupled together via at least one modem (36). A stream of data is supplied to the modem, which has a data transfer mode and a command mode while that modem is operating in the data transfer mode in a first communication session. A preselected escape character followed by a selected command sequence is inserted into the data stream and is detected and utilized by the modem to automatically initiate a second communication session by specifying the network, node, application, service level and the like for the second communication session. Thereafter, selected data within the data stream may be preceded by the preselected escape character and a session identification command sequence and thereby accurately identified as associated with a particular communication session, without requiring the data processing terminal application to have knowledge of data packet protocols and formats.

公开(公告)号：DE69319791T2

公开(公告)日：1999-03-25

申请号：DE69319791

申请日：1993-05-11

Applicant: IBM

Inventor： JENNESS ROBERT VINCENT ,  MAGUIRE SANDRA ARLENE ,  MOORE VICTOR STUART ,  WU DAVID C

IPC: H04L29/06 ,  H04L29/08 ,  H04M11/06

Abstract: First and second data processing terminals (12, 28) are coupled together via at least one modem (36). A stream of data is supplied to the modem, which has a data transfer mode and a command mode while that modem is operating in the data transfer mode in a first communication session. A preselected escape character followed by a selected command sequence is inserted into the data stream and is detected and utilized by the modem to automatically initiate a second communication session by specifying the network, node, application, service level and the like for the second communication session. Thereafter, selected data within the data stream may be preceded by the preselected escape character and a session identification command sequence and thereby accurately identified as associated with a particular communication session, without requiring the data processing terminal application to have knowledge of data packet protocols and formats.

公开(公告)号：AT168848T

公开(公告)日：1998-08-15

申请号：AT93303650

申请日：1993-05-11

Applicant: IBM

Inventor： JENNESS ROBERT VINCENT ,  MAGUIRE SANDRA ARLENE ,  MOORE VICTOR STUART ,  WU DAVID C

IPC: H04L29/06 ,  H04L29/08 ,  H04M11/06

Abstract: First and second data processing terminals (12, 28) are coupled together via at least one modem (36). A stream of data is supplied to the modem, which has a data transfer mode and a command mode while that modem is operating in the data transfer mode in a first communication session. A preselected escape character followed by a selected command sequence is inserted into the data stream and is detected and utilized by the modem to automatically initiate a second communication session by specifying the network, node, application, service level and the like for the second communication session. Thereafter, selected data within the data stream may be preceded by the preselected escape character and a session identification command sequence and thereby accurately identified as associated with a particular communication session, without requiring the data processing terminal application to have knowledge of data packet protocols and formats.

公开(公告)号：AT230536T

公开(公告)日：2003-01-15

申请号：AT94117160

申请日：1994-10-31

Applicant: IBM

Inventor： MOORE VICTOR S ,  VAN DUREN RICHARD G ,  WU DAVID C

IPC: H04L12/28 ,  H04L12/46 ,  H04B7/26

Abstract: A method and system for maintaining a routing path between a selected workstation (18) and a mobile workstation (36) within a multisegment local area network (10) wherein individual segments (12,14,16) are interconnected by a router device (28,30) and wherein selected segments (14,16) include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations (36). Each time communication is established between a mobile workstation (36) and a selected workstation (18), two routing table entries are established which identify a segment location (14) for the mobile workstation (36) and a segment location (12) for the selected workstation (18) within a routing table (86,84) associated with each router device (28,30). Thereafter, all routing table entries which identify the segment location (14) for the mobile workstation (36) are automatically deleted in response to a termination of communications between the mobile workstation (36) and the radio frequency transceiver. Routing path determination does not require the maintenance of routing path information at each workstation within the multisegment local area network.

公开(公告)号：CA2130409A1

公开(公告)日：1995-06-17

申请号：CA2130409

申请日：1994-08-18

Applicant: IBM

Inventor： MOORE VICTOR S ,  VAN DUREN RICHARD G ,  WU DAVID C

IPC: H04L12/28 ,  H04L12/46

Abstract: A method and system for maintaining a routing path between a selected workstation (18) and a mobile workstation (36) within a multisegment local area network (10) wherein individual segments (12,14,16) are interconnected by a router device (28,30) and wherein selected segments (14,16) include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations (36). Each time communication is established between a mobile workstation (36) and a selected workstation (18), two routing table entries are established which identify a segment location (14) for the mobile workstation (36) and a segment location (12) for the selected workstation (18) within a routing table (86,84) associated with each router device (28,30). Thereafter, all routing table entries which identify the segment location (14) for the mobile workstation (36) are automatically deleted in response to a termination of communications between the mobile workstation (36) and the radio frequency transceiver. Routing path determination does not require the maintenance of routing path information at each workstation within the multisegment local area network.

公开(公告)号：DE69431946T2

公开(公告)日：2003-10-02

申请号：DE69431946

申请日：1994-10-31

Applicant: IBM

Inventor： MOORE VICTOR S ,  VAN DUREN RICHARD G ,  WU DAVID C

IPC: H04L12/28 ,  H04L12/46 ,  H04B7/26

Abstract: A method and system for maintaining a routing path between a selected workstation (18) and a mobile workstation (36) within a multisegment local area network (10) wherein individual segments (12,14,16) are interconnected by a router device (28,30) and wherein selected segments (14,16) include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations (36). Each time communication is established between a mobile workstation (36) and a selected workstation (18), two routing table entries are established which identify a segment location (14) for the mobile workstation (36) and a segment location (12) for the selected workstation (18) within a routing table (86,84) associated with each router device (28,30). Thereafter, all routing table entries which identify the segment location (14) for the mobile workstation (36) are automatically deleted in response to a termination of communications between the mobile workstation (36) and the radio frequency transceiver. Routing path determination does not require the maintenance of routing path information at each workstation within the multisegment local area network.

公开(公告)号：DE69319791D1

公开(公告)日：1998-08-27

申请号：DE69319791

申请日：1993-05-11

Applicant: IBM

Inventor： JENNESS ROBERT VINCENT ,  MAGUIRE SANDRA ARLENE ,  MOORE VICTOR STUART ,  WU DAVID C

IPC: H04L29/06 ,  H04L29/08 ,  H04M11/06

Abstract: First and second data processing terminals (12, 28) are coupled together via at least one modem (36). A stream of data is supplied to the modem, which has a data transfer mode and a command mode while that modem is operating in the data transfer mode in a first communication session. A preselected escape character followed by a selected command sequence is inserted into the data stream and is detected and utilized by the modem to automatically initiate a second communication session by specifying the network, node, application, service level and the like for the second communication session. Thereafter, selected data within the data stream may be preceded by the preselected escape character and a session identification command sequence and thereby accurately identified as associated with a particular communication session, without requiring the data processing terminal application to have knowledge of data packet protocols and formats.

公开(公告)号：DE69431946D1

公开(公告)日：2003-02-06

申请号：DE69431946

申请日：1994-10-31

Applicant: IBM

Inventor： MOORE VICTOR S ,  VAN DUREN RICHARD G ,  WU DAVID C

IPC: H04L12/28 ,  H04L12/46 ,  H04B7/26

Abstract: A method and system for maintaining a routing path between a selected workstation (18) and a mobile workstation (36) within a multisegment local area network (10) wherein individual segments (12,14,16) are interconnected by a router device (28,30) and wherein selected segments (14,16) include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations (36). Each time communication is established between a mobile workstation (36) and a selected workstation (18), two routing table entries are established which identify a segment location (14) for the mobile workstation (36) and a segment location (12) for the selected workstation (18) within a routing table (86,84) associated with each router device (28,30). Thereafter, all routing table entries which identify the segment location (14) for the mobile workstation (36) are automatically deleted in response to a termination of communications between the mobile workstation (36) and the radio frequency transceiver. Routing path determination does not require the maintenance of routing path information at each workstation within the multisegment local area network.