Codec priority settings for softphone

[jasonjr.hill]

I'm working on a SIP softphone but I got the following problem and I have no idea how to solve ituring an audio call, PMCA codec is used primarily. How to setup codec priority to achieve PCMU will be used during the call?I use Windows 7, C# (Visual Studio), Ozaki C# SIP library and the following type of codecs: PCMA, PCMU, iLBC.I hope that one of the community have any idea. Thank you very much for any help.

 

[Ashraf]

I believe what you are looking for is to change the merit of the filter. This will determine the order of the filter to be used.
I found the following link that explains more about this:
DirectShow Merits