SIM 900 mini with arduino

Hello, how are you?
I start with arduino
I am working on a project with the sim900 mini gsm module. I have inserted a sim in the module but when I try to call the number, I have no answer while the network led is blinking.
Thanks in advance

Welcome to the forum

Please give us details of how the SIM900 module is connected to the Arduino, which Arduino you are using and please post the sketch that you are using

How is the SIM900 module powered ?

Bonjour et désolé pour le retard dans la réponse
J'ai finalement pu résoudre mon problème. C'était l'alimentation qui n'allait pas

Merci