[asterisk-users] SIP authentication

[Steve Davies]

Hi,

For IAX there is a fairly clear description of the authentication
process for inbound calls. A similar SIP document used to exist on the
voip-info wiki, but since 1.6.2 has a number of changes, I was
wondering how different (if at-all) 1.6 authentication might be in SIP
over 1.2. or 1.4 versions?

Can I also assume that for an outbound SIP call, "defaultuser" is now
used instead of "username" if there is an auth-challenge from the
remote party? Or am I completely missing the point?

Thank for any pointers.

Regards,
Steve