Hi,
we have an Agfeo pbx with the tk suite software. With this software one can dial via cti for a hard phone. This works very well.
Using a zoiper this does not work. It seems that the pbx sends an sip refer to zoiper which does not get answered properly.
Does anyone have an idea on what to configure and where to ask? I can provide a debug log that contains a lot of information on this subject.