This paper analyzes inter-firm alliances for providing the home computer user with an innovative new telecommunications service: a high-speed connection to the Internet. After providing an overview of the Internet access provider industry, it discusses the split of competencies needed to deliver this new service, between monopolistic infrastructure (cable and local telephone) companies and entr...

The Voice over Internet Protocol (VoIP) is designed for voice communications over IP networks. To use a VoIP service, an individual only needs a user name for identification. In comparison, the public switched telephone network requires detailed information from a user before creating an account. The limited identity information requirement makes VoIP calls appealing to criminals. In addition, ...

We propose a quality of service (QoS) monitoring program for broadband access to measure the impact of proprietary network spaces. Our paper surveys other QoS policy initiatives, including those in the airline, and wireless and wireline telephone industries, to situate broadband in the context of other markets undergoing regulatory devolution. We illustrate how network architecture can create i...

-An electronic information system for storing, transmitting, receiving and displaying electrical circuit schematics is presented. The schematics are binary coded for computer storage and for transmission over telephone grade communications lines. A complete schematic can be transmitted in a matter of a few seconds with no degradation in the image quality. A standard set of schematic symbols and...

We consider the following communications system: A mobile cellular telephone company would like to serve K users simultaneously. Each user (transmitter) transmits data to the company’s base station (receiver) in the form of bits (0’s and 1’s). By modulating electromagnetic waves of different frequencies, each user’s data can be transmitted on a fixed set of “frequency slots” approved the govern...

The information super-highway is here, technically at least, fulfilling the predictions of the prophets of the Information Age back in the late 1970s. The convergence of voice, data, and video using broadband network capabilities promises rapid growth in multimedia communications. Multimedia services are likely to grow rapidly as both hardware and software advances are combined with new applica...

Mobile telephone systems are undergoing a substantial change from voice based systems which also support data transfer to become systems which truly support packet switched data services to mobile subscribers. This evolution towards the third generation (3G) mobile system will be based on the Global System for Mobile communications (GSM) [1] and will begin with the General Packet Radio Service ...

The growth of mobile communications has been phenomenal. At the start of the last decade there were just over 10 million mobile cellular telephone subscribers around the world. At the beginning of 2001, this figure had grown almost 70 times to over 700 million. Around one in ten people around the world now owns a mobile phone. The number of mobile subscribers will surpass the number of fixed te...

The SpeechDat-Car project is a 4th framework EC project in the Language Engineering programme. It aims at collecting a set of nine speech databases to support training and testing of robust multilingual speech recognition for in-car applications. The consortium participants are car manufacturers, telephone communications providers, and universities. This paper describes the background of the pr...

Advances in the Internet and telecommunications technologies have spurred many research efforts in integrated communication systems which integrate heterogeneous devices (such as desktop phone, cellular phone, PSTN phone or pager) and networks (like the Public Switch Telephone Network, cellular networks, or the pager networks) on top of the Internet and enables communications among any devices ...