Bosch Appliances Home Security System THE DCN User Manual

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SC & SI Remote Interface Description 
en | 4 
 
Bosch Security Systems B.V. | 2003 December | SC & SI Remote Interface Description 
System configuration and system installation 
2.1 Introduction 
The System Configuration and System Installation Remote Interface is part of the DCN software which allows 
another controlling entity, not being the DCN Control PC, to use the System Configuration and System 
Installation applications. 
2.2 
Remote System Configuration and System Installation 
System Configuration (SC) is the application that monitors the hardware configuration of the congress system 
and the link between hardware items and user information. Typical SC issues are, e.g. checking the 
communication status, determining the system mode and replacing units. 
System Installation (SI) is the application that allows for assigning seatnumbers to units to create a one to one 
link between a unique user chosen identifier and a congress unit in the conference hall. 
Maintaining the system configuration or performing a system installation with a remote interface is done by 
means of calling a defined set of Remote Functions and acting upon a defined set of Update Notifications. 
The general concept of remote functions and update notifications is described in [SRS_INF]. [SRS_INF] also 
defines the protocol and hardware conditions concerning the remote interface. This document gives the set of 
remote functions and the set of update notifications concerning SC and SI. The relation between remote 
function and update notifications is given in the description of each separate remote function. 
The system configuration and system installation process however, are also influenced by the actions of the 
users performed upon the actual units. Actions such as pressing the microphone button or disconnecting a 
unit from the system also results in update notifications being sent to the remote controller. The relation 
between unit/user events and update notifications can be found in the user event matrices in sections 4.1.2 
en 6.1.1. 
2.3 System 
Modes 
To understand the SC and SI functions, one should have some knowledge on the behaviour of the CCU 
depending on the various so called system modes. This section gives a brief, although complete, description 
of these modes. 
The CCU system as a whole is always running in one of the system modes. Each application on the CCU has 
its own behaviour in each system mode. The purpose of the system mode is to have a clear division of 
functions and an easy way of separating them. It should be impossible for instance to start the installation 
mode while the CCU is still booting, i.e. the CCU is in the Init-mode. 
The  following system modes are used: 
init 
One time mode after start-up of the CCU. The CCU can 
start with default data (defined as ‘cold start’), or with data 
the last time used (so called ‘warm start’). 
config 
In this system mode the DCN configuration can be 
changed, for instance installing units, assigning 
seatnumbers, assigning audio channels etc. 
congress 
This is the 'normal' system mode. In this mode most 
applications will do their work, for instance starting a 
voting round, turning on a microphone, interpreting etc. 
maintenance 
In this system mode the DCN system can be maintained, 
for instance testing microphones, testing audio channels, 
factory testing and equalisation. 
download 
In this system mode new CCU software can be 
downloaded. 
down 
One time system mode just before shutdown of the CCU. 
Figure 1 below gives an overview of possible system mode changes.