Daniel Fryxell - Academia.edu (original) (raw)
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Papers by Daniel Fryxell
Internet telephony, 2001
It has taken nearly thirty years for the historically analog telephone network to be transformed ... more It has taken nearly thirty years for the historically analog telephone network to be transformed into today's end-to-end digital circuite switched network. Today we are on the verge of a second revolution in telephone technology that will be every bit as radical as the conversion from analog to digital: from circuit-switched to packet-switched technology for the carriage of voice as well as data traffic. The development of technology for carrying voice traffic over Internet protocol (IP) networks has already resulted in the widespread ...
This chapter investigates the costs a local exchange carrier (LEG) would incur to implement an In... more This chapter investigates the costs a local exchange carrier (LEG) would incur to implement an Internet protocol (IP)-based local access network providing both voice and Internet access service. The architecture employs end-to-end IP technology over asymmetric digital subscriber lines (ADSL) in the local loop. A cost model of key network elements estimates the forwardlooking cost of this integrated network.
ABSTRACT This paper analyzes the cost structure of broadband wireline access networks based on th... more ABSTRACT This paper analyzes the cost structure of broadband wireline access networks based on the Internet Protocol (IP) offering integrated Internet access and voice services for households and small businesses. The first network follows a telco-based architecture. The architecture for the cable plant is similar to recent designs for Digital Loop Carrier (DLC) systems with fiber to the serving area and copper pairs to the customer premise.
Internet telephony, 2001
It has taken nearly thirty years for the historically analog telephone network to be transformed ... more It has taken nearly thirty years for the historically analog telephone network to be transformed into today's end-to-end digital circuite switched network. Today we are on the verge of a second revolution in telephone technology that will be every bit as radical as the conversion from analog to digital: from circuit-switched to packet-switched technology for the carriage of voice as well as data traffic. The development of technology for carrying voice traffic over Internet protocol (IP) networks has already resulted in the widespread ...
This chapter investigates the costs a local exchange carrier (LEG) would incur to implement an In... more This chapter investigates the costs a local exchange carrier (LEG) would incur to implement an Internet protocol (IP)-based local access network providing both voice and Internet access service. The architecture employs end-to-end IP technology over asymmetric digital subscriber lines (ADSL) in the local loop. A cost model of key network elements estimates the forwardlooking cost of this integrated network.
ABSTRACT This paper analyzes the cost structure of broadband wireline access networks based on th... more ABSTRACT This paper analyzes the cost structure of broadband wireline access networks based on the Internet Protocol (IP) offering integrated Internet access and voice services for households and small businesses. The first network follows a telco-based architecture. The architecture for the cable plant is similar to recent designs for Digital Loop Carrier (DLC) systems with fiber to the serving area and copper pairs to the customer premise.