Hi fellows,

I would like you can help me with the following doubt.

I am having a user is Registering ok to a Registrar Server.
Seeing the authorization values I can see that we have the Authorization Header 
wiht the following Authentication-URI value= sip:domain.com
Realm = domain.com

But I am having a problem with REFER messages where the Registrar is sending 
403 Authentication Failure.
Here I can see the Authorization header values are:
Realm = domain.com
Seeing the Authentication-URI value = sip:to-uri-user@dst-ipaddress

Could be the Registrar sending 403 cause the Authentication-URI should be like 
the REGISTER value?
Where I could find reference about the correct values of the Authorization 
Header?

Any feedback will be great.

Regards,
I really appreciate your help.
Guillermo



Guillermo Zuniga
Especialista de Soporte Técnico
Gerencia de Soporte Técnico

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