Astrisk Invite with Credentials

I am new to Asterisk and managed to get it successfully registered to the soft switch.
Soft switch challenge Register to which Asterisk respond correctly.
The issue is that I am trying to use the “Auto-dial” feature to test outbound calls. The Invite is being send to which the soft switch challenge with 407. Asterisk respond with Ack but never send another Invite with credentials.

Where do you tell it to send Invite with credentials?

Thanks in advance for the assistance.

I manage to get it resolved.
I was using the auto-dial feature but I did not specifiy the trunk to be used.
in the file I had to add trunk123 to the Channel info as follow: