Patent ID: 7929945

Claim:
A method, comprising: collecting predetermined events associated with a call/connection for an access terminal (AT) in a measurement data record (MDR); generating a first MDR for a packet data call active in a high rate packet data (HRPD) system; storing the first MDR in a first database in the HRPD system; tuning away from the HRPD system to a 3G-1X system; generating a second MDR for the call in the 3G-1X system; storing the second MDR in a second database in the 3G-1X system; linking the first and second MDRs, the access terminal having a hardware ID, the first and second MDRs being linked with an access terminal hardware ID of the access terminal and a time of tune away of the access terminal; and confirming the tune away of the access terminal if access terminal hardware IDs match in the first and second MDRs and if a call ending time associated with the access terminal in the first MDR matches a call start time with the access terminal in the second MDR.