Hi, I'm quite new about SIP. I have to modify source code of some SIP UA.... changes are connected with modification of two LSB in PCM frame. I have programme in JAVA so I choose SIP-Communicator and now I'm trying to make some call beetwen two SIP-Communicators. I wonder if it is necessery to run some SIP server on my machine to do that or maybe I can create some free account and use it, i don't have public IP address. Can some of you tell me location of some free servers and some info about SIP-Communicator, is it possible to do modifications on PCM frame level?? And if it is which package or class i should modify o look at. Thanks for your help.
Regards, Gregory