29.06.2015 Views

Expert Documentation

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

- Wait for the LED to go to steady red (about 30 seconds): system powered down<br />

- Press ON/OFF to power up again after intervening (with the boards plugged back in). Wait<br />

3 to 4 minutes for the system to initialize completely.<br />

12.2 Board Management<br />

12.2.1 Maintenance<br />

12.2.1.1 Generalities<br />

The following conditions require maintenance to handle boards after these are accepted:<br />

- First appearance in the system:<br />

• System configuration aspect when a new board is detected<br />

• Initialization and start-up of the corresponding hardware<br />

- Dynamic appearance or disappearance due to physical causes:<br />

• Warm system reset<br />

• Board plugged/unplugged while the system is running<br />

• Problems detected requiring actions on the corresponding board<br />

- Dynamic appearance or disappearance due to logical causes (MMC commands)<br />

The following rules apply:<br />

- Any detected board is considered by the maintenance as PRESENT.<br />

- A PRESENT board can be considered as ACCEPTED or REFUSED depending on the<br />

system dimensioning or power budget criteria.<br />

- On cold reset, all the PRESENT boards are acknowledged (accepted or refused).<br />

- Hardware decrease aspects are only applied at cold reset. A board seen as PRESENT on<br />

cold reset might not be detected on warm reset (board detection failure or board<br />

unplugged). In such a situation, such a board is considered by maintenance as ABSENT<br />

(the board configuration data is still available) after warm reset.<br />

12.2.1.2 System with a Software Version older than R2.0<br />

The system should always be powered down before plugging/unplugging a board.<br />

12.2.1.2.1 Plugging a Board<br />

When a board is plugged, the system assigns numbers to the board equipment (user directory<br />

numbers or line numbers); these numbers are assigned in ascending order of free system<br />

numbers. The board equipment is initialized with the corresponding default configuration.<br />

When a board is plugged into a slot previously taken up by another board, this board is<br />

managed in the following way:<br />

- if the new board is of the same type (same scan point) as the board previously plugged,<br />

the new board is assigned the same data (numbers and configuration) as the previous<br />

one.<br />

- if the new board is different from the previous one, the system deletes the previous board<br />

and associated data (the numbers assigned are now available and the default<br />

12-3

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!