hmm ok Estel i will explain what i did : then i searched for the networks (GSM) from N900 then choosed the default one that my SIM uses tried to scan for other GSM receiver i found 9999999 of numbers choosed number 555 (that was exactly rhe number i chosed) wireshark stareted to show me data getting sniffed after it finished i opened the cap file with multiple decrypters i could find the number from who to who also the area both numbers are in but wasn't able to change the cap into wav(or any sound format)