When subnets of different sites overlap, or are duplicated the following rules are applied by PowerSuite:
1. When configuring PowerSuite sites, or uploading the sites to PowerSuite, PowerSuite will display a warning, informing you that it is not possible for PowerSuite sites to have duplicate subnets. The first subnet that PowerSuite finds in the site configuration is used, the remaining duplicate subnets are then ignored during site configuration upload.
2. When a PowerSuite site and a Skype for Business site are configured with the same subnet, the PowerSuite site subnet will take precedence. All the calls to such subnet will be allocated to the PowerSuite site.
3. In a situation where PowerSuite and Skype for Business sites have overlapping subnets, PowerSuite will not provide a warning. The smaller range\narrower subnet (the subnet with higher number of bits ) will take precedence.
Example:
If a call is made from an IP\Subnet and the specific IP\Subnet is covered by two different PowerSuite and/or Skype for Business subnets that have overlapping ranges, the call will be assigned to the subnet with narrower range.