Patent ID: 7787861

Claim:
A method, comprising: detecting no acknowledgement received within a predetermined acknowledgement period for a given charging data record set transmitted from a charging data record generation unit of a mobile telecommunications network to a first charging data record collection unit of a group of charging data record collection units associated with said charging data record generation unit; checking whether processing of any charging data record set marked as a potential duplicate is currently pending with any charging data record collection unit of the group of charging data record collection units; and in response to discovering pending processing of at least one charging data record set marked as a potential duplicate: detecting completion of the pending processing of the at least one charging data record set marked as a potential duplicate, selecting, further in response to the detected completion of the pending processing, a second charging data record collection unit of the group of charging data record collection units as a temporary backup charging data record collection unit, and transferring said given charging data record set to the selected second charging data record collection unit for processing as a potential duplicate.