Telephone communication system and method over local area network wiring
First Claim
1. A device for use with a local area network (LAN) cable in a building having at least first and second twisted wire pairs, the LAN cable being connected to simultaneously carry first and second signals, said device comprising:
- a first connector for connecting to the LAN cable;
a second connector coupled to said first connector for passing the first signal;
a third connector coupled to said first connector for passing the second signal; and
a single enclosure housing said first, second and third connectors,wherein the second signal is carried over a phantom channel formed between the first and second twisted wire pairs of the LAN cable.
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Accused Products
Abstract
A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.
241 Citations
69 Claims
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1. A device for use with a local area network (LAN) cable in a building having at least first and second twisted wire pairs, the LAN cable being connected to simultaneously carry first and second signals, said device comprising:
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a first connector for connecting to the LAN cable; a second connector coupled to said first connector for passing the first signal; a third connector coupled to said first connector for passing the second signal; and a single enclosure housing said first, second and third connectors, wherein the second signal is carried over a phantom channel formed between the first and second twisted wire pairs of the LAN cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for use with a cable at least in part in walls of a building, the cable having at least first and second twisted wire pairs and being connectable in an outlet cavity or outlet opening and carrying at least first and second signals, said device comprising:
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a first connector for connecting to the cable; a second connector coupled to said first connector for passing the first signal; a third connector coupled to said first connector for passing the second signal; and a single enclosure housing said first, second and third connectors, wherein the second signal is carried over a phantom channel formed between the first and second twisted wire pairs of said cable, and said device is pluggable into or attachable to an outlet, or mountable into an outlet opening or cavity. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An apparatus for coupling a first device and a second device to a local area network cable having at least first and second twisted wire pairs, the cable being connected for simultaneously carrying first and second signals, the apparatus comprising:
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a first connector connectable to the local area network cable; a second connector connectable to the second device for coupling the second signal to the second device; and a third connector connectable to the first device for coupling the first signal to the first device, wherein each of the first and second twisted pairs is operative to carry the second signal, and the at least two twisted pairs cooperatively form a phantom channel operative to carry the first signal. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A system in a building for simultaneously carrying a first signal between first and second devices and a second signal between third and fourth devices, said system comprising:
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a cable at least in part in a wall of the building and accessed via outlets, said cable having first and second ends and comprising at least two twisted wire pairs connected for carrying a first signal, and said at least two twisted wire pairs cooperatively forming a phantom channel simultaneously operative to carry the second signal; a first apparatus connected to said first end of said cable, said first apparatus being connectable to the first device for coupling the first signal to the first device, and being further connectable to the third device for coupling the second signal to the third device; and a second apparatus connected to said second end of said cable, said second apparatus being connectable to the second device for coupling the first signal to the second device, and being further connectable to the fourth device for coupling the second signal to the fourth device. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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Specification