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US 6,404,861 B1Granted
DSL modem with management capability
Assigneee-Cell Technologies
InventorsMichael S. Cohen, K. C. Babu, R. Balasubramanyam, Murali Ramanathan, P.K. Nanda Kumar
Life of this patent
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Abstract
A modem using digital subscriber line (DSL) provides high speed access over a copper plant. The DSL modem exchanges management information to a terminating multiplexer using a proprietary protocol, thus enabling reliable, fast access to networking resources.
Claims13
An access device for providing high speed network connectivity, comprising:
- a main processor for executing code to send and receive proprietary protocol packets for communicating management information with a multiplexer using a digital subscriber line (DSL) technology, the management information indicating presence of an Ethernet-type port, current line speed, and media access control (MAC) address;
- a modem interface bus coupled to the main processor for providing read/write control signs;
- a multi-function controller coupled to the main processor for performing Ethernet media access control (MAC);
- an Ethernet interface coupled to the multifunction controller for communicating with an external Ethernet device;
- a DSL port coupled to the modem interface bus for receiving and transmitting a DSL signals;
- a DSL bit pump coupled to the modem interface for performing digital signal processing functions;
- and
- a digital/analog converter (DAC) coupled to the DSL bit pump for outputting signals to the DSL bit pump for transport over the DSL port and over the Ethernet interface.
5 more elements
An access device for providing high speed network connectivity, comprising:
- a central processing unit (CPU) card comprising:
- (a) a main processor configured for supplying management information with a multiplexer over a digital subscriber line (DSL), the management information indicating presence of an Ethernet-type port, current line speed, and media access control (MAC) address;
- (b) a multi-function controller coupled to the main processor for configured for performing Ethernet media access control (MAC);
- (c) a modem interface bus coupled to the main processor configured for providing read/write control signs;
- (d) a DSL port coupled to the modem interface bus for receiving and transmitting a DSL signals;
- and
- a modem card coupled to the CPU card for interfacing a public switched telephone network (PSTN) comprising:
- (a) a DSL bit pump coupled to the modem interface of the CPU card configured for performing digital signal processing functions;
- (b) a digital/analog converter (DAC) coupled to the DSL bit pump for outputting signals to the DSL bit pump for transport over the DSL port and over the Ethernet interface.
6 more elements
Dependencies are inferred from the claim text.