Patent ID: 9577978
Date: 2017-02-21
CPC Classifications: H04L,H04M

Claim:
1. A method, comprising: receiving, by a first directory server of a first regional call processing system, a new name authority pointer associated with a telephone number and comprising an internet protocol address for establishing communications with a communication device associated with the telephone number; determining, by the first directory server, whether the new name authority pointer is within a first geographic region of the first regional call processing system based on a numbering plan area code of the telephone number; storing, by the first directory server, the new name authority pointer at a first directory responsive to determining that the telephone number is located within the first geographic region; transmitting, by the first directory server, the new name authority pointer to a second directory server of a second regional call processing system responsive to determining that the telephone number is not located within the first geographic region, wherein the second directory server is accessible by a second name server of the second regional call processing system for provisioning the new name authority pointer to the second name server; receiving a version number of the new name authority pointer; determining whether the new name authority pointer is current based on the version number; and synchronizing, by the first directory server, the first directory and a first replicate directory of a third directory server of the first regional call processing system.