nature of address calling indicator

Hi all. I'm using wireshark version 1.25 . I create from my pcap file a csv file using "tshark...." with several filed like : CIC , DATE, calling number , etc. One filed is nature of address of the calling number , but I noticed that it's write in my csv file The Nature Of address of the Location number section and not from Calling Party Number section. This behavior cause to miss the right calling number because I don't know if the calling number is intenational or national number. Do you know how can I sprate between Nature of address indicator of the caling number and Nature of address indicator of the Location number? Thanks Oren