When you park a call, Callmanager will search the available Park numbers configured on the server that is processing the calls and will also look up the partitions that are available in the CSS of the phone and will pick the first available part number that is defined in a partition that is reachable by the phone.
When you go to another phone to retrieve the parked call, Callmanager will search for the parked call by using the CSS of the device.
This can create an issue if you create same park numbers in different partitions in different servers. It is recommended to give different park number ranges for different servers.
