belle-sip: belle-sip (A Voice-over-IP phone) belle-sip: belle-sip: Belle-SIP is a C object oriented SIP Stack used by Linphone. belle-sip: belle-sip: http://www.linphone.org/technical-corner/belle-sip/overview belle-sip: belle-sip: belle-sip: belle-sip: belle-sip: belle-sip: