Hi,
On Wed, 20 Sep 2006, César Davi Ávila do Nascimento wrote:
I'm newbie on SOFIA-SIP, and I have a doubt about this affirmation:
welcome to the list!
" NUA has a limitation of supporting only one identity per one NUA instance"
What does it mean?
I'd like to implement a 8 channel SIP gateway using SOFIA-SIP. Could NUA
be used to do it?
A very good question as this has been the hot topic on this list for some
weeks (if not longer). In short, currently the NUA API does not support
this without hacks (otherwise you have to use NTA), but a lot of people
are interested in fixing it. Some additional solutions (NUTAG_IDENTITY and
NUTAG_M_*() tags) are under work (see archives for details):
-
http://www.mail-archive.com/[email protected]/msg00693.html
-
http://www.mail-archive.com/[email protected]/msg00759.html
... and others.
This really comes down to the design of your app. You could use the
tapioca-sip approach of modifying "From" when
requesting/answering, use the new NUTAG_M_USERNAME() tag to modify
"Contact" per request/answer, run 8 nua instances (perfecly valid in some
cases), use the new NUTAG_IDENTITY() facility to handle multiple
registrations with one nua instance, use NTA in place of NUA, or...
--
under work: Sofia-SIP at http://sofia-sip.sf.net
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