Avaya G860 Installing And Operating page 164

Avaya G860 Media Gateway
Running Mode - Regular is the default running mode. The Debug option is for Avaya
lab use only.
Figure 39: Welcome to the Online Software Upgrade Wizard
15.3.2.2 Upgrading the Secondary SC Board
In the first stage, the secondary (Standby) SC board's software is upgraded. When
upgrade on this board is completed, a switchover action occurs which exchanges
Active/Standby status between the SC boards. The secondary SC board becomes the
Active board and the primary SC board becomes the Standby SC board. Thereafter,
the secondary SC board (now the Active SC board) manages the upgrade process of
the Media Gateway boards (refer to the figure below).
Following the upgrade of the Media Gateway boards' software, the software upgrade
is then performed on the primary SC board which is now the Standby SC board.
164 Installation & Operation Manual