Foreign Cell: A Foreign Cell is a cell that is managed by another OMC and it is the neighbor of one or several cells, also managed by that OMC.
Inner Cell: Inner Cells contain MSC data associated with the cell, which belongs to this MSC.
Outer Cell: Outer Cells are cells that belong to any other MSC in the PLMN to which a handover can be made from one or several cells in the selected MSC. An Outer Cell is only needed to create a
Neighbor Relation to a cell belonging to another MSC.
Internal Cell: Internal Cells contain BSC data associated with a cell controlled by the BSC to which the Internal Cell belongs. The only exception is data associated with Neighbor Relations within a BSC, or between cells in different BSCs. If the cell has a subcell structure the Internal Cell contains the Underlaid Subcell data together with the data common to both the Underlaid Subcell and the Overlaid Subcell. It can also be set to be a Layer 1, 2,…or 8 Cell. The Level 1 and Level 3 Type Cell parameters can
be used in combination with a subcell structure
External Cell: External Cells are cells that belong to any other BSC in the PLMN and to which a handover can be made from one or
several cells in the BSC in question.
An External Cell is only needed to create a Neighbor Relation to
a cell belonging to another BSC.
External Cells can be a Level 1 Type Cell, a Level 2 Type Cell,
or a Level 3 Type Cell, depending on which type of Internal Cell they represent.