Bonjour,lorsque je passe un appel j'ai un message d'erreur"échec de l'appel" et ceux qui m'appellent tombent directement sur le répondeur.j'ai fait la restauration système,le resset et j'ai vérifié le blocage d'appel tout est parfait.aidez moi svp

This is a English speaking forum, are you able to translate for us?

Rough translation:

"Hi, when making a call I receive an error message "call failure" and those who call me call directly on the (voicemail?). I've done the system restore, the reset and checked the call blocking everything's fine. Help me please."

thank you sir.

Call failure is usually an indication that your service/carrier is busy. Have you gotten in touch with them to see if the problem might be on their end?