Journal ArticleDOI
A Distributed Experimental Communications System
J. DeTreville,W. Sincoskie +1 more
Reads0
Chats0
TLDR
The packet experimental communications system (packet XCS) is a new experimental voice and data switch that uses a local-area network for digital voice transmission, with local intelligence for switching, and has highly distributed control.Abstract:
The packet experimental communications system (packet XCS) is a new experimental voice and data switch. It uses a local-area network (LAN) for digital voice transmission, with local intelligence for switching. The packet XCS also has highly distributed control. The individual sites cooperate to provide user services as well as internal data management. We have learned that several local networks, including CSMA/CD networks, can be made to work well for voice transmission and that highly distributed control is practical in such a system. A system has been constructed which is used as a testbed for distributed voice and data communications experiments. This system is purely for experimentation and does not indicate a direction for future Bell System product offerings.read more
Citations
More filters
Patent
Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals and Telephones
TL;DR: In this paper, a packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices.
Journal ArticleDOI
Fundamental design issues for the future Internet
TL;DR: This work addresses some of the fundamental architectural design issues facing the future Internet, including whether the Internet should adopt a new service model, how this service model should be invoked, and whether this service models should include admission control.
Patent
Voice over data telecommunications network architecture
Isaac K. Elliott,Steven P. Higgins,Andrew Dugan,Jon Peterson,Robert L. Hernandez,Rick D. Steele,Bruce W. Baker,Richard D. Terpstra,Jonathan S. Mitchell,Jin-Gen Wang,Harold Stearns,Eric Zimmerer,Raymond E. Waibel,Kraig Owen,Shawn Lewis +14 more
TL;DR: In this article, the authors describe a system and method for communicating voice and data over a packet-switched network that is adapted to coexist and communicate with a legacy PSTN.
Proceedings ArticleDOI
Supporting real-time applications in an Integrated Services Packet Network: architecture and mechanism
TL;DR: This paper considers the support of real-time applications in an Integrated Services Packet Network (ISPN), and proposes an ISPN architecture that supports two distinct kinds of real time service: guaranteed service, which involves pre-computed worst-case delay bounds, and predicted service which uses the measure performance of the network in computing delay bounds.
Patent
Network session management
Eric A. Voit,Edward E. Balkovich,William D. Goodman,Jayant G. Gadre,Patrick E. White,David E. Young +5 more
TL;DR: In this article, the authors propose a communication system for telephony communication across combined circuit switched and packet switched networks, such as a telephone network and the Internet, which are connectable to terminals such as telephones and computers, for selective communication there between.
References
More filters
Journal ArticleDOI
Ethernet: distributed packet switching for local computer networks
TL;DR: The design principles and implementation are described, based on experience with an operating Ethernet of 100 nodes along a kilometer of coaxial cable, of a model for estimating performance under heavy loads and a packet protocol for error controlled communication.
Journal ArticleDOI
A statistical analysis of on-off patterns in 16 conversations
TL;DR: This is a summary of data from an extensive analysis of on-off speech patterns in 16 experimental telephone conversations, determined by a fixed threshold speech detector having certain rules for rejecting noise and for filling in short gaps.
Journal ArticleDOI
Description of Fasnet — A unidirectional local-area communications network
J. O. Limb,C. Flores +1 more
TL;DR: The physical configuration and the protocol of Fasnet are described and channel utilization for the condition of continuously queued sources is given and Mechanisms to control the access of various traffic types are described.
Proceedings ArticleDOI
Temporal logic can be more expressive
TL;DR: It is shown how Temporal Logic can be extended to express any such property definable by a right-linear grammar and hence a regular expression and a decision procedure and complete axiomatization are given.
Journal ArticleDOI
A variation on CSMA/CD that yields movable TDM slots in integrated voice/data local networks
TL;DR: A variation on the carrier-sense, multiple-access/collision-detection (CSMA/CD) protocol for local-area, random-access broadcast networks is presented, and has an upper bound on the delay of periodic traffic.