| US 7,599,386 B2 | ||
| Method for establishing a subscriber connection and a system utilizing the method | ||
| Heikki Laamanen, Nuottakuja 2B, FI-02230, Espoo (Finland); and Umesh Gowda, Kuutamokatu 6 C57, FI-02210, Espoo (Finland) | ||
| Appl. No. 10/595,292 PCT Filed Oct. 13, 2004, PCT No. PCT/FI2004/000612 § 371(c)(1), (2), (4) Date Apr. 05, 2006, PCT Pub. No. WO2005/039077, PCT Pub. Date Apr. 28, 2005. |
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| Claims priority of application No. 20031505 (FI), filed on Oct. 15, 2003. | ||
| Prior Publication US 2006/0285552 A1, Dec. 21, 2006 | ||
| Int. Cl. H04L 12/66 (2006.01); H04J 3/04 (2006.01); H04J 14/00 (2006.01); H04B 10/00 (2006.01) | ||
| U.S. Cl. 370—463 [370/535; 398/67; 398/168] | 13 Claims |
| 1. A method for establishing subscriber connections between a central site and a plurality of subscriber premises in a Fiber
To The Curb (FTTC) network, the method comprising:
coupling an RDSLAM by at least one optical fiber to the central site;
coupling the at least one optical fiber to a passive optical element in the RDSLAM;
coupling a plurality of subscriber transmission devices to the RDSLAM via a corresponding plurality of subscriber-specific
electrically conductive transmission lines;
coupling each subscriber-specific electrically conductive transmission line to a corresponding one of subscriber-specific
conversion elements in the RDSLAM; and
coupling each of the conversion elements optically to the passive optical element,
wherein each of the conversion elements is constructed to:
(a) produce a subscriber-specific electric signal from downstream signals received from the passive optical element and to
feed the subscriber-specific electric signal to the corresponding electrically conductive transmission line;
(b) convert a subscriber-specific upstream signal received from the corresponding electrically conductive transmission line
to an upstream optical signal and to feed the upstream optical signal to the passive optical element;
(c) operate independently of other conversion elements in the RDSLAM; and
(d) receive operating power of that conversion element through the corresponding electrically conductive transmission line;
and wherein the passive optical element is constructed to:
(a) receive the downstream signals from the at least one optical fiber and distribute the downstream signals to the conversion
elements; and
(b) combine the upstream optical signals received from the conversion elements onto the at least one optical fiber.
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