If you have upgraded to PBXware with Asterisk 1.4, you will need to upgrade your Zaptel to version 1.4

Change directory:

cd /usr/src

Download zaptel package:

wget http://downloads.asterisk.org/pub/telephony/zaptel/zaptel-1.4.12.1.tar.gz

Extract archive:

tar xvf zaptel-1.4.12.1.tar.gz

Change the directory again:

cd zaptel-1.4.12.1

Run 'make':

make

If it asks again for 'make', run it again.

Now install the newly compiled modules:

make install

This should install zaptel 1.4 modules on the system and you should be able to use it. If for some reason the ZTDUMMY module, which is important for conferencing, isn't loaded automatically, do so by executing:

modprobe ztdummy