today I use trixbox and a2billing 1.3 for one callingcard + callback +reseller module + enterprise voip system
why I choose trixbox, because it has feature-riched modules for enterprise usage,such as voicemail,conference,call transfer,call park etc,so I dont do those again
the problem is it has some problem with A2Billing1.3, no cdr generated .after some hours of research,I think I'd better recompile new version asterisk, so I choose asterisk-1.4.13,and asterisk-addons ( I use it for realtime sip/iax extensions)
then cdr is generated ,so it means trixbox has some bugs somewhere
then problem comes,app_meetme didn't comeout after compile new asterisk, after google,I get good resources about how to install zaptel ztdummy
cd zaptel-1.4.5.1
ls
make
yum install kernel-smp-devel
cd /usr/src
ls
cd kernels/
ls
cd ..
ln -s kernels/2.6.9-34.0.2.EL-smp-i686 linux
ln -s kernels/2.6.9-34.0.2.EL-smp-i686 linux-2.6
cd zaptel-1.4.5.1
ls
make clean
./configure
make
cd /etc
cd sysconfig
vi zaptel
comment unused modules,but at least uncomment ztdummy module
modprobe ztdummy
/etc/init.d/zaptel start
modprobe ztdummy
then after recompile asterisk-1.4.13, app_meetme.o is there