BusinessPhone Communication Platform 5.1
Dialogs

## Download Firmware to D4 Equipment

The terminal series DBC22x offers the feature of FW download to terminal. With this feature it is possible to upgrade or downgrade the firmware of terminals at the customer in case of faults in the old terminal firmware. Upgrading/downgrading is also possible if a new terminal firmware with more or new features exists. Using the feature firmware upgrading can be done remotely in a easy and cost saving way without any hardware changes.

This feature is backward compatible to all BusinessPhone Versions that can be programmed by BMS. Only the FW of the extension line board (ELU‑D3, MFU) must support the DBC22x series.

### Upgrade procedure:

1. Select the entire card or individual phones
2. Select the Download file (firmware)
3. Press “Upgrade”

For more details please refer to Maintenance Instruction ASB 150 02 (1541‑ASB 150 02 Uen)

Revision: B © Ericsson Enterprise 2003