Arif-Uz-Zaman writes:

OpenSER will check whether caller is registered or not before forwarding that received INVITE message to make sure only registered user will make call through OpenSER. If Caller is not registered, OpenSER will deny the call.

Is it possible to check if a user is calling from a registered device without using any Database? Please help me with sample configuration by considering my interest.

arif,

i'm quite sure that this same question has come up many times before already. please check the mailing list archives.

-- juha