Cellular-based communications system and method of using same
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for transmitting serial digital data across wireless modems is disclosed. In one embodiment, data is collected by a remote monitoring device and transmitted to a first Cellular Digital Packet Data (“CDPD”) modem via one or more RS232 interfaces. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. The applications program in the second CDPD modem returns a signal, indicating the status of the interface. Data transmission is initiated when the status of both interfaces is established.
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Citations
27 Claims
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1. (canceled)
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2. A method of transmitting data, comprising:
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receiving data and control information generated from an interface according to a physical layer protocol, the interface being coupled to a data terminal equipment;
encapsulating the data and control information in a wireless carrier signal; and
transmitting the wireless carrier signal to a data circuit-terminating equipment, wherein the data circuit-terminating equipment operates according to the physical layer protocol. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A method of transmitting data, comprising:
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receiving a carrier signal encapsulating data and a plurality of control signals from a data circuit-terminating equipment, wherein the data and a plurality of control signals are generated according to a physical layer protocol; and
outputting the data and the control signals to an interface coupled to data terminal equipment configured to operate according to the physical layer protocol. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A device for transmitting data, comprising:
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an interface configured to receive data and control information from a data terminal equipment according to a physical layer protocol;
a processor configured to encapsulate the data and control information in a wireless carrier signal; and
an air interface configured to transmit the wireless carrier signal to a data circuit-terminating equipment, wherein the data circuit-terminating equipment operates according to the physical layer protocol. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A device of transmitting data, comprising:
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an air interface configured to receive a carrier signal encapsulating data and a plurality of control signals from a data circuit-terminating equipment, wherein the data and a plurality of control signals are generated according to a physical layer protocol;
a processor configured to output the data and the control signals; and
an interface coupled to a data terminal equipment that is configured to operate according to the physical layer protocol, the interface forwarding the data and the control signals to the data terminal equipment. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification