A method of operating a call duration analysis system comprises receiving a plurality of call detail records (CDRs) comprising information associated with a plurality of calls over a wireless communication network, processing the CDRs to determine an average call duration for the wireless communication network, processing the CDRs with the average call duration for the wireless communication network to determine at least one wireless access node associated with a below-average call duration, processing the CDRs associated with the wireless access node to determine a first set of the CDRs associated with the wireless access node exhibiting a good RF status and a second set of the CDRs associated with the wireless access node exhibiting a bad RF status, and processing the first set of the CDRs to determine a wireless communication device type associated with the below-average call duration.