I am having a slight problem with asterisk when I attempt to call into my server from another SIP domain. The issue arises when the user calling from the remote domain has the same username as a person registered on the Asterisk server.
Example: On asterisk there is userA registered with the server (userA@remote.domain), the calls fail with a 403 Forbidden. And the console shows:
chan_sip.c:10326 handle_request_invite: Failed to authenticate user "User A"sip:userA@remote.domain;tag=f07f220b
I have “insecure=invite” set in the “remote.domain” context in the sip.conf file. Here is the section of my sip.conf where I have configured “remote.domain”
The interesting thing if userB@remote.domain places the same call into the asterisk server, the call completes as expected. It is only when a user at the remote domain has the same username as a registered user on the asterisk server, that the user at the remote doamin can not complete a call into the asterisk server and recieves the 403 result.
This appears to me to be a bug within Asterisk because UserA@asterisk.domain, they just happen to share the same username but exist in different domains.
Has anyone else run into the situtation and how do you resolve it?