P2P-SIP Peer to peer Internet telephony using SIP Kundan Singh and Henning Schulzrinne Columbia University, New York May 2005 .
Peer-to-peer systems for autonomic VoIP and web hotspot handling Kundan Singh, Weibin Zhao and Henning Schulzrinne Internet Real Time Laboratory Computer.
P2P-SIP Peer to peer Internet telephony using SIP
