RST is the reset button. ASB is the Alternate Software Bank button.
The Branch Gateway has two firmware banks:
Each firmware bank contains a version of the Branch Gateway firmware. These may be different versions. The purpose of this feature is to provide software redundancy. If one of the versions becomes corrupted, you can reset the Branch Gateway using the other version. This is particularly important when uploading new versions.
By default, when you turn on or reset the Branch Gateway, the Branch Gateway loads firmware from Bank B. This default setting can be changed by the system administrator.
For example, if the Branch Gateway is configured to load firmware from Bank B, you can reset the Branch Gateway to load the firmware from Bank A instead.
