Managing the PSTN Transformation

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mIgratIon Plan

e second dimension is the incremental investment that is required

for migration. As CAPEX is limited, the location and duration of

the area has to be carefully planned and is not that flexible, thus the

priority is higher for areas with a large investment required.

e technical priority stems from two technical limitations of timing:

• An early end of support (EoS) of an area forces the area to be

migrated early. is timing constraint leads to a high priority.

Instead of the end of support, the incident risk for a switch

can also be used (e.g., when EoS already happened).

• Technical enablers of PSTN migration need to be present, ...