On Dienstag, 22. Mai 2007, Klaus Darilion wrote:
Either use Asterisk, Callwaever or Openser+sems
(writing your own b2bua
application within sems).
You could also try yate or freeswitch.
I've added you answer to the FAQ in the openser wiki, no need to answer the
same question over and over again.
Henning