NGN architectures of tomorrow clearly focus on an all-IP network architecture to provide service flexibility and network conversion. IP-based services such as VoIP, IPTV, Internet, IP-based VPNs, and LAN-LAN services will be fully supported.

But what is the relevance of legacy services such as POTS, ISDN, and data-leased lines for the revenue structure of public network operators? Network operators have already established that they cannot neglect the revenues of those services in medium-term scenarios.

Network migration scenarios, therefore, also have to provide economical support for legacy services without imposing additional operational burdens.

The session will discuss the following:

• Forecasts on legacy and NGN service developmentsul>
• Service requirements of residential and business customers
• Migration scenarios supporting legacy voice, leased lines, and existing VPNs

Bruno Ette CSO KEYMILE

Mr. Ette is managing director of KEYMILE AG Switzerland and CSO of the KEYMILE group. Mr. Ette studied automatization technology and started his career in the federal army, where he had several leading positions. After his retirement as an officer in 1985, he started his career in the telecommunications business with Alcatel SEL AG. In 1997, after several leading positions in international sales, Mr. Ette joined Marconi Communications GmbH, where he was responsible for sales in management.

Bettina Tratz-Ryan Research Director Gartner Research

Ms. Tratz-Ryan is responsible for broadband access systems research in North America. She also is the topic leader for public network switching research. Ms. Tratz-Ryan joined Gartner with the acquisition of Northern Business Information (NBI). At NBI, she was responsible for the European residential broadband equipment and services market, as well as contributing to research by assessing issues of the deployment of HDTV technology and videoconferencing equipment. Prior to joining NBI, she was a consultant analyst with Frost & Sullivan, where she covered video and broadband issues, the U.S. video and audio production and post-production markets, the U.S. cable TV equipment, and the U.S. videoconferencing systems and services market.

Renato Paschoareli Engineering and Network Planning Director Global Village Telecom (GVT)

Mr. Paschoareli has more than 12 years in the high-tech and telecom industry. Two years ago, he joined GVT, where his main challenges are the development of new products for VoIP, the NGN network growth, and the DSL2+ technology consolidation as factors of differentiation and competitiveness in the Brazilian market. Prior to this, he was responsible for the engineering team at Intelig Telecom, where he was involved in MPLS VPN and metro Ethernet services launching.

George Williamson Director, Strategic Network Design Openreach

Dr. Williamson is responsible for developing Openreach's future network plan. He is also a former member of the Management Board of BT Scotland. Dr. Williamson has undertaken a wide range of engineering and management roles since joining BT in 1980 to work on development of the System X Digital Local Exchange. More recently, he took on the role of general manager for BT Exact's Network Management department and, immediately prior to joining Openreach, he undertook a number of roles in mobilizing BT's 21CN Systems Programme.