<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18975">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>Hello,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>My customer has the following database
design.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Voip server 1 talks to SQL server 1.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Voip server 2 talks to SQL server 2.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Voip 1 and Voip 2 are
load-balanced.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Each SQL server has two databases. Database
1 contains semi-static data like call forwarding properties for
users and is read-only. This is replicated from a third SQL server which
the web interface writes to. Database 2 is read/write, is not replicated and
contains data that is updated frequently like user location and now dialog
info.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Voip server 1 is not allowed to talk to SQL server
2 and vice versa.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I'm using forward() to send authenticated REGISTERs
to the other server so that it'll write this to RAM and its own SQL server.
Thus, both servers are aware of clients authenticated and registered by the
other server.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>How can I make both servers be aware of
active calls on the other server?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>The customer is looking into possibly changing
their design, but this may be a lengthy process involving lots of
people.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>With kind regards,</FONT></DIV>
<DIV><FONT size=2 face=Arial>Pan</FONT></DIV></BODY></HTML>