[Asterisk-Users] Multiple Asterisk servers sharing/propagating registry ?

Chris Albertson chrisalbertson90278 at yahoo.com
Tue Dec 9 14:37:55 MST 2003

One more idea.  How about this.  Only works with SIP,
not ZAP or the others.

You get a SIP router like "SER" all your SIP phones are set to
use SER as the proxy.  SER when it gets a registration will look
for "good" Asterisk servers and will resend the registration to
_each_ good Asterisk server.  

SER's config file is kind of "Perl-like" in that it is a fully
programmable programming language.  You can use redundant SER
servers with rund robin DNS if you need long up times.

--- Andrew Kohlsmith <akohlsmith-asterisk at benshaw.com> wrote:
> > I'd like to know if there is a way for multiple asterisk servers to
> > share a common SIP and/or IAX registry.
> > The setup I imagine would be something like :
> > - several asterisk servers called sip1.isp.com, sip2.isp.com, ...
> > - a DNS alias sip.isp.com pointing to all the addresses (thus
> >   providing a round robin resolution on each server)
> > - each SIP client would register with sip.isp.com (thus ending on a
> >   random asterisk servers)
> > - but after that, all the servers would be "aware" of the
> >   registration. Thus any asterisk server would know how to route a
> >   call to SIP/<some registered user>
> I would like to know how to do this as well, but for different
> reasons: 
> mobile users.  If I'm in the office my SIP phone registers with the
> local * 
> box, or at my house wiht my * box, and so on and so forth, so my
> extension 
> moves with me.  If I'm not anywhere near a * box the SIP registration
> eventually dies and since there's no SIP registration it calls my
> cell 
> phone...  kind of like a universal extension type of thing.
> I know I can dial all of them with one extension and whichever picks
> up 
> picks up but that seems a little ... hokey.  I can't think of a
> better way 
> to do it short of being able to propagate registrations across *
> boxes.
> Regards,
> Andrew
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Chris Albertson
  Home:   310-376-1029  chrisalbertson90278 at yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson at aero.org

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