Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Ralf Ackermann. Gateways and components for supplementary IP telephony services in heterogeneous environments. PhD thesis, Darmstadt University of Technology, 2003. [doi]
Abstract is missing.