A method for a cellular telecommunications network includes selecting a target cell in the cellular telecommunications network, retrieving automatic neighbor relations (ANR) data including neighbor cell list information for a plurality of cells in the network, determining, from the ANR data, first and second cells that are neighbors to the target cell and use a same Physical Cell Identifier (PCI), and at least one of the first and second cells is an inbound neighbor to the target cell, determining that PCI confusion is present between the first and second cells with respect to the target cell, and resolving the PCI confusion.