[asterisk-users] Call sip:user at domain.com?

[Gilles]

On Tue, 21 Dec 2010 14:20:55 +0000, A J Stiles
<asterisk_list at earthshod.co.uk> wrote:
>The same way Ubuntu, Slackware, CentOS &c. differ from each other.  They are 
>all using the Linux kernel and the X Window System "under the bonnet".  Well, 
>every Free and Open Source telephony system is using Asterisk  (and 
>Linux)  "under the bonnet".  The differences are in the user configuration 
>tools.

According to this article, it appears that what really makes a B2BUA
different from an SIP register/proxy is that a B2BUA can manage media
(voicemail, etc.) while an SIP proxy doesn't:

www.tinyurl.com/Asterisk-vs-OpenSIPS