Abstract: Systems and methods for selecting an operating mode for a communication device are disclosed. The operating mode is compatible with one or more spectrum management classes. One such method includes measuring subscriber loop characteristics and identifying a first allowable class corresponding to the measured subscriber loop characteristics. The allowable class is chosen from a group of spectrum management classes. The method further includes selecting an operating mode from a group of possible operating modes. The selected operating mode is compatible with the first allowable class.

Abstract: The present invention provides a communication device, such as a modem, that is capable of detecting whether it is capable of operating in a mode that is compatible with one or more of the Spectrum Management Classes. The modem automatically selects a mode of operation that is compliant with one or more of the Spectrum Management Classes. The communication device also determines whether it is capable of operating in multiple modes that are compliant with multiple Spectrum Management Classes, and is capable of selecting the modes of operation that optimizes the performance of the communication device. Furthermore, the communication device is capable of determining when it is not capable of operating in a mode that is compliant with at least one of the Spectrum Management Classes and which prevents operation of itself upon determining that it is not capable of operating in a mode that is compliant with at least one of the Spectrum Management Classes.

Abstract: Distortion caused by a DSL signal can be determined with the DSL signal. The DSL signal and/or the power spectral density (PSD) can be altered to suitably reduce or eliminate the distortion effects, which normally would be reduced by a POTS splitter. As a result of such adjustments to the DSL signal, the POTS band noise is suitably reduced to resolve potential adverse POTS quality issues. In addition, the DSL performance can be improved as well as the undesirable distortion is reduced. Splitterless DSL allows the DSL equipment to be connected to subscriber loops without needing a POTS splitter. This splitterless DSL configuration may be used with conversion equipment utilized to provide indirect DSL service over loaded and/or unloaded loops. In addition, the splitterless DSL configuration also will work with normal DSLAMs.

Abstract: Using the concepts of inverse multiplexing, repeaterless backhaul can be provided on loaded or unloaded loops. Inverse multiplexing can effectively support a large bit rate capacity between the conversion equipment and the CO-side equipment by utilizing a large enough number of potentially low capacity loops. As the distance that the data has to be backhauled increases, the bit rate capacities of the loops generally decrease. However, this decrease in the bit rate capacities of the loops can be compensated for by using inverse multiplexing to gather together enough loops to meet the data rate requirements for backhauling customer data given various service level and contention criteria.

Abstract: Indirect digital subscriber line (DSL) service generally involves connecting conversion equipment that converts between DSL service delivered to a customer premises and DSL service that connects back to a data network. Indirect DSL service may be delivered on the same loop to the customer premises that also carries a native 0-4 KHz POTS interface. For larger deployments, the conversion equipment may include inverse multiplexing to combine multiple links back to the data network to support DSL service. Furthermore, the conversion equipment may include functions to digitize the POTS service. Aggregating DSL data from multiple customers and/or digitizing POTS service that may be multiplexed with the DSL data allows for significant pair gain opportunities.

Abstract: The present invention provides a communication device, such as a modem, that is capable of detecting whether it is capable of operating in a mode that is compatible with one or more of the Spectrum Management Classes. The modem automatically selects a mode of operation that is compliant with one or more of the Spectrum Management Classes. The communication device also determines whether it is capable of operating in multiple modes that are compliant with multiple Spectrum Management Classes, and is capable of selecting the modes of operation that optimize the performance of the communication device. Furthermore, the communication device is capable of determining when it is not capable of operating in a mode that is compliant with at least one of the Spectrum Management Classes and which prevents operation of itself upon determining that it is not capable of operating in a mode that is compliant with at least one of the Spectrum Management Classes.

Abstract: Indirect digital subscriber line (DSL) service generally involves connecting conversion equipment that converts between DSL service delivered to a customer premises and DSL service that connects back to a data network. Indirect DSL service may be delivered on the same loop to the customer premises that also carries a native 0-4 KHz POTS interface. For larger deployments, the conversion equipment may include inverse multiplexing to combine multiple links back to the data network to support DSL service. Furthermore, the conversion equipment may include functions to digitize the POTS service. Aggregating DSL data from multiple customers and/or digitizing POTS service that may be multiplexed with the DSL data allows for significant pair gain opportunities.