Patent ID: 11888598
Assignee: T-MOBILE INNOVATIONS LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method of implementing a central routing function (CRF) platform to provide reliable call control on a call route and ensure that a call terminates effectively, comprising:
storing, in a non-transitory memory accessibly by the CRF platform, a plurality of prioritized call route lists, wherein each prioritized call route list associates the call route to a destination telephone number in a prioritized order;
receiving, by a back-to-back user agent application of the CRF platform, a request for a call route list from a network element, wherein the request comprises a destination telephone number;
obtaining, by a list generation application of the CRF platform, the call route list from the prioritized call route lists based on the destination telephone number, wherein the call route list comprises a plurality of addresses;
translating, by a pseudo domain name server (DNS) application of the CRF platform, each address in the call route list into one or more IP addresses; and
attempting, by the back-to-back user agent application, to complete the call using the one or more IP addresses according to the prioritized order until the call terminates effectively.