I want to create a H323 Gateway in order to receive calls from an external H323 Server and transfer them to another Freeswitch server.

I started on my Ubuntu 10.04 with mod_opal and spent some hours with trying the following 2 ways:

Using buildopal.sh, I had to adapt the script slightly and had to do some symlinks in order to progress. At the end I got stuck with a compile error "class PSTUNClient’ has no member named ‘InvalidateCache’" during compilation of opal manager
I then installed the libpt and libopal packes from apt and started to compile mod_opal. I then got stuck with a compile error "errror: no matching function for call to ‘OpalLocalConnection::OpalLocalConnection(OpalCall&, FSEndPoint&, void*&, unsigned int&, OpalConnection::StringOptions*&)’"

So this did not seem to be the right way as regards to future ability to compile it with system updates.

Therefore I would like to ask you for some advice:

what is the best way to go: mod_opal or mod_h323? I think the feature set will be somehow the same for my purposes (I only need voice, PCMA), so I am asking, which one is more stable and compiles better.
what is best preferred platform (CentOS/Debian/??) for compiling this?
are there any dependencies for the opal and libpt versions?
Who had recently made running this solution and can give me some advice?

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With kind regards
Peter Steinbach 

Telefaks Services GmbH
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