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DCN Next Generation Open Interface Release 2.4 Config Install and Database

en | 76

Bosch Communications Systems | 2007 February | SRS_SCSIINF | Du010934

Note that this function is only an example to shown how the interaction between update

notifications and remote functions can appear. For instance, when you press a soft-key the

second time, this function will fail. Better is to look if the selected unit has already a seat

assigned. If not, the assign and increment, if assigned, just keep the assignment.

When done with all seats present in the conference hall, we can leave the global installation

mode. This is done using the following sequence:

/* first turn off the last selected unit */

/* ........ */

error = SI_Stop_Install ();

if (error != SI_E_NOERROR)

{

/* do error handling */

}

This ends the global seat assignment. The remote controller has now a complete list of all

seats and their corresponding unit-numbers.

C.2. Replacing defective units during operation

This example shows how the remote controller can assign a seat to a unit in the conference

hall, which is replaced by a new unit (due to failure of the old unit).

Assumed is that previously all units have been assigned a seat-number on the remote

controller. After detection that a unit fails, the following actions are performed by the technical

staff of the conference hall:

1. The defective unit is removed from the system. Note that disconnecting the unit

also may disconnect other (chained) units.

2. A new unit is inserted into the unit-chain and connected to the system.

3. The new unit is de-initialized, and initialized again to be sure that the added unit

has no address conflict with other units.

During these actions the following notifications are reported to the remote controller

(assumed is that the application SC is registered by the CCU:

• Microphone off notifications if any of the disconnected units has their microphone

on or had a pending request (present in the Request To Speak list).

• SC_C_DISCONNECT_UNIT for all units in the chain disconnected. The remote

controller remembers these units to disable the functionality.

• SC_C_CONNECT_UNIT for all units connected. Most of the unit-numbers are

known in the disconnect-list and can be restored (e.g. the functionality will be

enabled). The new unit(s) connected to the system is not known.

For these units the remote controller must start the operational installation mode. The

operational installation mode is activated using the following remote function request:

error = SI_Start_Install (SI_C_OPERATIONAL_INSTALL_MODE);

if (error != SI_E_NOERROR)

{

/* do error handling */

}

After this the CCU has enabled the operational installation mode. The remote controller can

start the sequence to assign the new unit-numbers to seats not yet assigned.

while (there are new units and unassigned seats)

{

WORD wUnitId;

wUnitId = First_new_unit_available;

/* select the unit */

error = SI_Select_Unit (wUnitId, TRUE);

if (error != SI_E_NOERROR)

{

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