Biamp Vocia VO-4e, Operation Manual, Page: 8 / 24

VO-4e Rear
Failover is triggered by any of the following conditions:

Chassis Fault

Channel Fault

Loss of power

Loss of CobraNet link

Loss of Failover Link Cable

ELD-1 / speaker line Fault (if enabled in software)

External amplifier Faults being asserted
Only Chassis and Channel Faults trigger the Device failover mechanism. Abnormal conditions that do not
immediately impair audio will appear as warnings but will not trigger failover. After a failover condition has
been asserted, a power cycle of the units is required to recover from the failover. This can be done either
by physically repowering the devices or by performing a ‘Device Reset’ in the Vocia software via the Test
tab of the device dialog. The units are required to be reset within 10 seconds of each other in order to
ensure the primary device resumes control.
Channel-to-Channel Failover
Channel-to-Channel failover is supported as 1:1 Channel. In this configuration, channel pairs can be
specified and adjacent channels will act as a redundant backup. Channel 2 will act as backup for Channel
1 and Channel 4 will act as backup for Channel 3. Channel failover is triggered by either a Channel
Failure Fault, an ELD-1/Speaker Line Fault (if enabled in software) or an amplifier Fault Input being
asserted. The VO-4e will return to normal operation after the Fault condition is cleared and the unit is re-
powered or reset via the Test tab in the Properties sheet.