I want to change or add data to extension but not through FreePBX .
so that data, obtained from other software or file.
What can I make changes to the asterisk ?
what should I put the asterisk ?
This forum is not intended for support questions.
Having said that, I don’t understand the question, but suspect you are really asking a question about FreePBX, not Asterisk.
Extensions only have dialplans, not data. Do you mean modify the dialplan?