Communication server apparatus using frequency multiplexing and method

A communication server coupled to a plurality of twisted pair data lines, each twisted pair data line coupled to an associated twisted pair subscriber line by a splitter, the communication server comprising:

• a plurality of pairs of receiver/buffers and transmit/buffers coupled to associated twisted pair data lines;
• a plurality of pairs of frequency agile modulators and demodulators, each frequency agile modulator and demodulator pair coupled to an associated receiver/buffer and transmit/buffer pair, and each frequency agile modulator and demodulator pair set to operate at a unique frequency;
• a plurality of pairs of demodulators and modulators, each demodulator and modulator pair having a designatable operation frequency;
• a plurality of XDSL modems each coupled to an associated demodulator and modulator pair;
• a mixer coupled to the pairs of frequency agile modulators and demodulators and coupled to the pairs of demodulators and modulators, the mixer operable to combine signals from the frequency agile modulators and provide the combined signal to the demodulators, and the mixer further operable to combine signals from the modulators and provide the combined signal to the frequency agile demodulators;
• a detector operable to detect a need for data service on a selected twisted pair data line;
• and
• a controller coupled to the detector and to the pairs of demodulators and modulators, the controller operable to select one of the XDSL modems in response to detecting the need for data service, the controller further operable to couple the selected twisted pair data line to the selected XDSL modem by designating the demodulator and modulator pair associated with the selected XDSL modem to operate at the unique frequency of the frequency agile modulator and demodulator associated with the selected twisted pair data line.