Patent ID: 6230166
Filing Date: 2001-05-08
Classification: H04Q,Y10S

Abstract:
In a telecommunications network configured for local number portability, a method for detecting message looping by recording messages in a transaction log using a chronological list superimposed on an indexed list, wherein the transaction log comprises a plurality of transaction entries corresponding to a plurality of messages, the chronological list orders the transaction entries from an oldest transaction entry to a latest transaction entry and the indexed list orders the transaction entries according to indexes corresponding to transaction descriptors for the messages, and the transaction log includes a first chronological list pointer that points to an oldest transaction entry in the chronological list, comprising the steps of:receiving a message;making a determination as to whether there is an available transaction entry in the transaction log;if the determination is that there is no available transaction entry, then deleting one of the plurality of transaction entries from the transaction log using the first chronological list pointer;creating a new transaction entry for the message; andplacing the new transaction entry in the transaction log.