1. Rosenberg, J., Schulzrinne, H., Camarillo, G., et al., SIP: Session initiation protocol, in RFC (Request for Comments) 3261, 2002.
2. Rosenberg, J., Requirements for management of overload in the session initiation protocol, in RFC (Request for Comments) 5390, 2008.
3. Hilt, V., Noel, E., Shen, C., and Abdelal, A., Design considerations for session initiation protocol (SIP) overload control, RFC (Request for Comments) 6357, 2011.
4. Gurbani, V., Hilt, V., and Schulzrinne, H., Session initiation protocol (SIP) overload control (LBOC), in draftietf-soc-overload-control-12, 2013.
5. Noel, E. and Williams, P.M., Session initiation protocol (SIP) rate control (RBOC), in draft-ietf-soc-overloadrate-control-04, 2013.