Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-02-22
1998-03-17
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359167, H04B 1020
Patent
active
057293708
ABSTRACT:
The present invention is an efficient method for upgrading telephone networks having a large number of copper wire pairs 31 that extend from a telephone central office 300 to a predetermined number of telephone customers 250. Such networks are referred to as narrowband communication networks. However, for telephone companies to be competitive with cable television providers who may soon be offering telephone service, they must upgrade their narrowband networks to handle video communication signals such as CATV. This is done in an efficient multi-step process keeping in mind the eventual network configuration. During the first step, optical cable 21 is installed between the telephone office and a remote terminal 310; and digital loop carrier (DLC) equipment 201,202 is connected at each end. The DLC equipment is suitable for audio but not video communication signals. Thereafter, the DLC equipment is replaced at the telephone central office and at the remote terminal with broadband access (BA) equipment 203,204. The BA equipment is adapted to handle video communication signals. Finally, a broadband link 330 such as coaxial cable 34, or high speed modems 261 connected to copper wire-pairs 31, or wireless transmission is installed between the remote terminal and the telephone customers.
REFERENCES:
patent: 4901306 (1990-02-01), Gardner
patent: 5327516 (1994-07-01), Chraplyvy et al.
patent: 5479595 (1995-12-01), Israelsson
patent: 5600633 (1997-02-01), Jaisingh et al.
Harman, et al., "Local Distribution for IMTV", IEEE MultiMedia, Fall 1995, pp. 14-23.
Bohn, et al., "The Fiber SLC Carrier System", AT&T Bell Laboratories Technical Journal vol. 63 No. 10, Dec. 1984, pp. 2389-2416.
R. L. Carroll, "Optical Architecture and Interface Lightguide Unit For Fiber-to-the-Home Feature of the AT&T SLC.RTM. Series 5 Carrier System", Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1989, pp. 1727-1732.
Bohn, et al., "Fiber in the Loop", AT&T Technical Journal, vol. 71, No. 1, Jan./Feb. 1992, pp. 31-45.
Proceedings of the 10th Annual National Fiber Optic Engineers Conference, vol. 2, Jun. 12-16, 1994, pp. 389-340.
Chen, et al., "Design of Digital Carrierless AM/PM Transceivers", AT&T/Bellcore contribution T1E1.4/92-149, Aug. 19, 1992.
Bohn, et al., "The Fiber-SLC.TM. carrier system: Bringing lightwave technology to the loop," Bell Laboratories Record, Apr. 1983, pp. 7-10.
"60D Power/Video Cabinet," AT&T Network Systems product brochure, Aug. 1995 .
Bernstein Lawrence
Coy Brent E.
Lucent Technologies - Inc.
Morra Michael A.
Pascal Leslie
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