BusinessPhone Communication Platform 4.0
Maintenance Instruction ASB 150 02 > Hot-Swapping Of Boards

## Procedure

This action can be invoked either by pressing the appropiate function keys (see Function keys overview) or by executing the system command called ‘Shutdown’ in the pull down menu located in the RASC menu ‘System data’:

- System data/shut down/reroute position/cmd: 2095

To exchange (a) board(s) in a running system please follow the five steps below:

1. One or more boards need to be shutdown (see Shutdown of board(s))
2. Change or insert new board(s) (see Adding (a) new board(s) to the system)
3. Search for and activate (a) new board(s) (see Search for new boards)
4. Re-programming of boards (if needed)
5. Check and erase warnings in the warning-log, which may have occurred because the board has not been available during hot swapping.

#### Function keys overview

If all boards are registered in the system the keys below are only activated in the menu:

- Admin/Maintenance/HW/SW/RP.

#### Shutdown of board(s)

The shutdown command is not needed if a new board is plugged into a formerly vacant slot.

In RASC this new command is located in the maintenance menu. The shutdown command must be issued before removing one or more board(s) from the system. If a board is removed from the system that was not shut down will cause a system restart. Move in the list to the boards (arrow keys) and press the space bar to select them. Press the function key (F6) to shut down the board(s) or click the field in the pull-down menu. This function key is only available in on-line condition (not available during remote access from e.g. the help desk). Enter the additional input parameter time to shut down if needed. The system waits during this selected time (0 to 11 minutes) and then forces all traffic to disconnect on the selected board(s). RASC displays in a window the remaining time until shutdown is invoked. After this time has elapsed all active processes on the board(s) are terminated and RASC issues a prompt that the board is now ready to be removed. The user can neither exit this window nor use any other RASC function during this time.

Note

It is not possible to shut down CPU boards. The selected board(s) must be registered in the E2 memory on the CPU, so it is neither possible to shutdown MISPLACED or MISSING boards nor boards of a wrong type. Additionally a detailed help text is accessible via the F1 key. If the PC crashes or a PC restart occurs during this waiting time, it is not possible to reconnect from RASC to the system until the shutdown process has finished. In this case it is prohibited to enter system programming from a system instrument while a shutdown is in progress. This may cause serious configuration faults (mismatches) which could lead to a non-restartable system (in this case only a cold-start could get the system running again).

Transferring configuration data retrieved from a system with a different running/shutdown board configuration (but everything else totally equal) causes serious configuration mismatches. This may lead to a system restart or, even worse, to a non restartable system. Therefore it is necessary to be very careful with retrieving and storing of system configurations.

#### Adding (a) new board(s) to the system

One or more boards can be added to the system. These boards can be new ones or updated ones which are still in shutdown state. There are two ways of adding a new board to an operating system:

- Replacing a board of the same type (& version)

- After a board in shutdown state has been updated or replaced by a new one, it can be added to the system using the update command (F9) located in the RP menu in RASC. After the process is complete, RASC receives an acknowledge and this result is shown in the RP menu, now containing all the data of the operational board (PROM version, revision, etc.).

- A new board in a formerly vacant position (refer to next chapter Search for new boards).

#### Search for new boards

The search key (F5) in the RASC RP menu is available for finding new boards in formerly vacant positions. RASC checks all board positions marked empty or new for boards. If a new board in an empty slot is found, it is marked as new. The new boards will be reported to RASC and will be shown in the RP menu. By pressing the update function key (F9) the boards are accepted by the system. After all boards have been accepted by the running system, the RP menu is built up new, now displaying all the data of the operational board (PROM version, revision, etc.).

Because the new board(s) is/are initialized with some default data only, (re)programming of the board(s) may be necessary. After the initialization (and re-programming, if needed) is finished the board(s) and all individuals are ready for traffic.

Note

When the search function is activated all new AUX-T boards are re-started (regardless whether newly inserted or already existing in the system). RASC does not show them. When a board is inserted in a ‘SHUTDOWN’ position and does not exactly match (type & version) the board inserted there before will cause the new board not to be accepted. In this case the slot remains in ‘SHUTDOWN’ state.

#### Deletion of a board

Not available, restart the exchange to delete a board.

Revision: E © Ericsson Enterprise 2003