Patent ID: 7664496

Claim:
A system that facilitates call communications, the system comprising: a switching component of a telecommunications network for generating a number portability (NP) request based on a call of an originating device to a destination device; and a management component for receiving the request or a response to the request and facilitating return to the switching component of a location routing number (LRN) for a visited mobile switching center (V-MSC) that serves the destination device by: generating a Send Routing Info for Location Services (SRI for LCS) message; sending the SRI for LCS message to a home location register (HLR) to retrieve an address for the V-MSC, the SRI for LCS message being used to retrieve the V-MSC address without needing to trigger a subsequent query by the HLR to the V-MSC; receiving, in reply to the SRI for LCS message, the V-MSC address from the HLR; and translating the V-MSC address into a V-MSC LRN based upon a lookup table in the management component.