Browse Prior Art Database

Remote Service: Switchable Electronic Customer Support Communications Line

IP.com Disclosure Number: IPCOM000110672D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Agha, SA: AUTHOR [+4]

Abstract

This invention describes how to provide remote service on a computer when that computer's processor complex is in a DOWN or NOT WORKING environment. It uses no hardware in addition to that which supports the operational system. What is unique about this invention is that it uses the same communications hardware that the operating system uses. In an AS/400* system, it is proposed an asynchronous protocol be used when the operational system is down rather than a synchronous, such as the SNA LU 6.2 protocol, when the system is up.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 60% of the total text.

Remote Service: Switchable Electronic Customer Support Communications Line

       This invention describes how to provide remote service on
a computer when that computer's processor complex is in a DOWN or NOT
WORKING environment.  It uses no hardware in addition to that which
supports the operational system.  What is unique about this invention
is that it uses the same communications hardware that the operating
system uses.  In an AS/400* system, it is proposed an asynchronous
protocol be used when the operational system is down rather than a
synchronous, such as the SNA LU 6.2 protocol, when the system is up.

      In order to provide remote service when a system is not
functional, the system must contain a service processor (SP)
function.  In the AS/400-specific implementation this is supplemented
by a multi-function I/O processor (MFIOP) card 1.  This card must
have a communications adapter card 2 with an attached modem 4.  The
modem must be capable of handling both all protocols used with the
capability to switch between protocols under program control.

      Generally, all computers have a main processor which runs the
operating system and application programs.  This invention describes
using an internal service processor which is operable when the main
processor is down.  There is a scan interface 3 between the service
processor and the main processor for feedback of diagnostic data.

      Remote service for a DOWN system is provided by ke...