If you can install Asterisk you can have that act as the PBX and do codec translation. I have a couple notes about setting that up here Voice over IP Integration - Call from Any SIP Softphone - #38 by jaminh.
If you can install Asterisk you can have that act as the PBX and do codec translation. I have a couple notes about setting that up here Voice over IP Integration - Call from Any SIP Softphone - #38 by jaminh.