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managIng the Pstn transformatIon
1. Natural selection
2. Area by area
3. Product by product
ese results in natural migration enabled for the whole migration
phase, a first phase of pure PbP followed by phases dominated by
AbA complemented with PbP migration.
For both PbP and AbA, sequencing has to be done. e PbP
sequencing approach is presented in the following section.
2.3.1 Prioritization Logic for Product Sequencing
In the following section, the prioritization logic for products within
the product-by-product approach is provided. ere are two rationales
for why products should be migrated first:
• Products that show low natural migration should be migrated
before products with a high likelihood for natural migration,
because the one w ...