1. Rosenberg, J., et al.: SIP: Session Initiation Protocol. RFC 3261, Internet Engineering Task Force (June 2002)
2. 3GPP TS 23.228, IP Multimedia (IM) Subsystem - Stage 2, Technical Specification (June 2001)
3. Kim, P., Boehm, W.: Support of Real-Time Applications in Future Mobile Networks: the IMS Approach. In: Sixteenth Wireless Personal Multimedia Communications (October 2003)
4. Tuexen, M., et al.: Architecture for Reliable Server Pooling, draft-ietf-rserpool-arch-05.txt (February 2003)
5. Xie, Q., Stewart, R.R.: Endpoint Name Resolution Protocol, draft-ietf-rserpool-enrp-01.txt (November 2001)