Telcordia Technologies

About: Telcordia Technologies is a based out in . It is known for research contribution in the topics: Network packet & Node (networking). The organization has 3097 authors who have published 4737 publications receiving 237882 citations.

Large fault tolerant packet switch particularly suited for asynchronous transfer mode (ATM) communication

Abstract: Apparatus, and accompanying methods for use therein, for a large (e.g. approximately 1 Terabit/second), fault tolerant packet switch (200), particularly suited for asynchronous mode transfer (ATM) communication, which utilizes cell address look-ahead in conjunction with parallel planes of self-routing cross-points (550), staggered time phased contention resolution and shared memory based input and output modules (260 and 270, respectively). An ATM cell applied to an input port of an interface module contains a data field and a virtual channel identifier (VCI) field. The VCI is translated by the interface module into a new VCI, to identify an output of the virtual channel for the switch and appends to the cell an additional routing header which will be used strictly for internal use in routing the entire cell through the switch and which includes distinct first and second portions.

Polymeric electrolytic cell separator membrane

Abstract: A flexible polymeric film useful as an interelectrode separator or electrolyte member in electrolytic devices, such as rechargeable batteries, comprises a copolymer of vinylidene fluoride with 8 to 25% hexafluoropropylene. The film may be cast or formed as a self-supporting layer retaining about 20% to 70% of a high-boiling solvent or solvent mixture comprising such solvents as ethylene carbonate, propylene carbonate, dimethyl carbonate, and dibutyl phthalate. The film may be used in such form or after leaching of the retained solvent with a film-inert low-boiling solvent to provide a separator member into which a solution of electrolytic salt is subsequently imbibed to displace retained solvent or replace solvent previously leached from the polymeric matrix.

Keynesian, New Keynesian and New Classical Economics

Abstract: Formal developments of the Keynes's General Theory, while attempting to achieve a new classical synthesis of the realities of observed macroeconomic fluctuation and unemployment with classical microeconomics, have come to be surprisingly closely tied to the old classical models. Keynes's insights have been reduced largely to an assumption of nominal price rigidities. In fact, Keynes's original qualitative approach contained a much richer description of economic reality. This paper describes how fully rational microeconomic models incorporating imperfect information and incomplete markets, very much in the Keynesian tradition, imply macroeconomic behavior that encompasses most of the qualitative insights of the General Theory. Copyright 1987 by Royal Economic Society.

Chromatic dispersion limitations in coherent lightwave transmission systems

Abstract: This work determines quantitatively for the first time, we believe, the chromatic dispersion limitations due to intersymbol interference degradations for coherent optical transmission systems with CPFSK, MSK, ASK, PSK, and DPSK modulation formats and for direct on-off keying (OOK) systems. These degradations are inherent in the information transmission process itself and cannot be eliminated without reducing the fiber chromatic dispersion or incorporating complex equalization techniques in the receiver. The limits that these degradations impose have only been approached experimentally by one group, who reported an 8-Gbit/s 68-km direct detection test1 where receiver performance was degraded by the information bandwidth. Coherent system experiments will eventually reach these limits as the modulation speed increases to multi-Gbit/s rates.