Ive had a couple of people ask me about a working python on CE binding. It appears because of some attachments that I put with some of my responses, the full details of what I did, and the status of what I did is not completely on the list. So I am posting this as a complete record I hope so that others may find it usefull. First let me say that it does indeed work! I am using it on a mobile 2003 device and it seems to work very well. So here is what I did. I took the py_pjsua from the main (win32) project and created a project within the workspace for the wince port and built it using Embedded visual studio 4.0. I had to do some things with the paths as you might expect. Change some libs directives since some of the standard API's are in different libs for the PPC versus WIN32. A couple of other things that I don't recall right now but are certainly the standard kind of things you go through when going from one platform to another. It built exactly like you would expect. I ended up with a version of py_pjsua.pyd that runs on this CE python engine , http://pythonce.sourceforge.net . So, my next goal was to get a client app running. Of course I immediately thought of the win32 py_pjsua_app. I tried to get it running on the CE device. It did not work, mainly because CE has no console mode, ie no sys.stdin.readline() as used in the mainloop of the py_pjsua_app. So, I attempted to use TKinter and redirect stdin and stdout to Tkinter widgets. It actually appeared to work, until I registered with my sip server. It appeared to just hang. I suspect it has to do with some threading issues which someone more familiar with Python could figure out. For me, I realized I did not really need console input in the first place since all my client actions are originated from my sip server (my client is truly a client and must originate calls through a custom interface back at the server). Never the less I used the TKinter to get access to the windows message loop to do some key bindings. So one can see that my app is truly such a hodge podge of different things that in and of itself it won't help many people. Certainly, following the examples on the pjsip site, one could make there own client app that utilizes py_pjsua.pyd built for CE; but out of the box, the pjsua_app.py will not work. Bottom line is , someone should be able to get a TKinter version of py_pjsua_app working. It is very easy to redirect stdin, and stdout to a TKinter text input and output widget. I would be happy to provide the Embedded visual studio 4 project that I used to build my py_pjsua.pyd, It is not clean and probably not the best example of proper project management so someone might need to clean it up a little to include it in the official project. I am an R&D guy and just figure out what is necessary to get me the results I need .So some of the things I do, I do out of a need to move forward. Here is a link that explains how to get Tkinter working on CE. http://pythonce.sourceforge.net/Wikka/Tkinter Fabio, If you would like me to email you my py_pjsua.pyd, let me know and I will send it to you. Dan