saving data into custom cdr field – add new filed in cdr

I created custom field “rec_name” id table “cdr”, database “asteriskcdrdb”. In this field I want to store recording name. I know i should do it by adding this line in one of .conf files, but where? exten => s,1,set(CDR(rec_name)=${CALLFILENAME}) I can do it by sql statement, too, but i don’t know where is the file … Read more