Editorial
Telephony in the year 2005
Quality-of-service in packet networks: basic mechanisms and directions
Very large conferences on the Internet: the Internet multimedia conferencing architecture
ITU-T standardization activities for interactive multimedia communications on packet-based networks: H.323 and related recommendations
Multimedia conferencing over ISDN and IP networks using ITU-T H-series recommendations: architecture, control and coordination
Internet Telephony: architecture and protocols – an IETF perspective
The impact of the Internet on telecommunication architectures