The ongoing adoption of a full IP network and changing regulatory environment demands that telecom service providers examine their network infrastructure to determine how they can change operations to increase efficiency and profitability. Many communications service providers are constrained by legacy tandem networks that are difficult and expensive to maintain. This has caused telcos to consolidate their older tandem switches to extend other’s life cycles or upgrading to more modern tandems. In each case, the process of moving network lines from one switch to another has been coined with the term rehoming.