Ha100 Functionality; Figure 4: Ha100 Functionality - Grandstream Networks HA100 Deployment Manual

HA100 FUNCTIONALITY

HA100 separates the external ports into the corresponding internal ports (A and B).Only one UCM6510
device is connected at any given time.
When the 2 UCM6510s connect to HA100 via port A and port B, the primary UCM6510 will use the external
ports on HA100 for data transmission. The HA100's RS485 port receives signaling from the UCM6510s to
switch between Port A and Port B.
If the internal port A on HA100 is connected successfully to the corresponding port on primary UCM6510,
the LED indicator for port A on HA100 will be solid green. The primary UCM6510 relies on HA100's external
ports for connections. In this case, the LED indicator for Port B on HA100 will not light up, and the backup
UCM will not provide service.

Figure 4: HA100 Functionality

For more details about UCM6510, please refer to online User Manual:
http://www.grandstream.com/sites/default/files/Resources/ucm6510_usermanual.pdf
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HA100 Deployment Guide