Broadband communications system

Claim 1

An apparatus for the communications of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the selected one of the plurality of subscribers; a second modulator for modulating the outgoing telephony signals from the selected one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; and a first coupler for coupling the incoming and outgoing telephony signals with the telephony network; wherein said incoming and outgoing telephony signals are selected from the group including SONET, OC-1, DS3, DS2, DS1 and E-1; wherein said first coupler comprises a first demultiplexor for demultiplexing and decoding each of said incoming telephony signals into groups of telephony signals; wherein said first modulator modulates each group onto a separate group carrier which is frequency division multiplexed in the forward band of the subscription network; wherein said subscriber terminal demodulator includes: a tuner for tuning at least one group carrier and demodulating said groups of telephony signals; a second demultiplexor, coupled to said tuner, for demultiplexing said groups of telephony signals into individual subscriber telephone signals; a selecting element, coupled to said second demultiplexor, for selecting the individual subscriber telephony signal addressed to the subscriber, and a second coupler for coupling said individual subscriber telephony signal to a subscriber line and which is coupled to the telephone equipment of the subscriber.

Claim 2

An apparatus for the communications of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the selected one of the plurality of subscribers; a second modulator for modulating the outgoing telephony signals from the selected one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; and a first coupler for coupling the incoming and outgoing telephony signals with the telephony network; wherein said incoming and outgoing telephony signals are selected from the group including SONET, OC-1, DS3, DS2, DS1 and E-1; wherein said first coupler comprises a first demultiplexor for demultiplexing and decoding each of said incoming telephony signals into groups of telephony signals; wherein said first modulator modulates each group onto a separate group carrier which is frequency division multiplexed in the forward band of the subscription network; wherein said subscriber terminal demodulator includes: a tuner for tuning at least one group carrier and demodulating said groups of telephony signals; a second demultiplexor, coupled to said tuner, for demultiplexing said groups of telephony signals into individual subscriber telephone signals; a selecting element, coupled to said second demultiplexor, for selecting the individual subscriber telephony signal addressed to the subscriber, and a second coupler for coupling said individual subscriber telephony signal to a subscriber line and which is coupled to the telephone equipment of the subscriber.

Claim 3

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: first means for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; subscriber terminal means for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; second means for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a subscriber telephony carrier in the reverse band of the subscription network; means for demodulating the outgoing telephony signals from the reverse band of the subscription network; and means for coupling the incoming and outgoing telephony signals with the telephony network; wherein said subscriber terminal means further includes means for coupling the subscriber telephone equipment to said subscriber terminal means; wherein said coupling means includes means for digitizing the telephony signals from the subscriber; wherein said digitizing means includes means for digitizing the telephony from the subscriber and combining them with digitized control and addressing information; wherein said digitized telephony signals from the subscriber are in DS0 format; wherein said second means for modulating modulates said subscriber telephony carrier with a QPSK modulation having a bandwidth of approximately 50 kHz; wherein said means for demodulating the telephony signals from the reverse band includes: a plurality of demodulators, each for tuning and demodulating a subscriber telephony carrier of the reverse band of the subscriber network and generating a plurality of demodulated subscriber telephony signals; and means for multiplexing the subscriber telephony signals of the subscriber network into a combined telephony signal, wherein said combined telephony signal is in one of OC-1, DS1, DS2, DS3, and E-1 format.

Claim 4

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: first means for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; subscriber terminal means for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; second means for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a subscriber telephony carrier in the reverse band of the subscription network; means for demodulating the outgoing telephony signals from the reverse band of the subscription network; and means for coupling the incoming and outgoing telephony signals with the telephony network; wherein said subscriber terminal means further includes means for coupling the subscriber telephone equipment to said subscriber terminal means; wherein said coupling means includes means for digitizing the telephony signals from the subscriber; wherein said digitizing means includes means for digitizing the telephony from the subscriber and combining them with digitized control and addressing information; wherein said digitized telephony signals from the subscriber are in DS0 format; wherein said second means for modulating modulates said subscriber telephony carrier with a QPSK modulation having a bandwidth of approximately 50 kHz; wherein said means for demodulating the telephony signals from the reverse band includes: a plurality of demodulators, each for tuning and demodulating a subscriber telephony carrier of the reverse band of the subscriber network and generating a plurality of demodulated subscriber telephony signals; and means for multiplexing the subscriber telephony signals of the subscriber network into a combined telephony signal, wherein said combined telephony signal is in one of OC-1, DS1, DS2, DS3, and E-1 format.

Claim 5

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network, said incoming telephony signals from the telephony network comprising a digital multiplexed input signal including a plurality of input data channels, the position of a particular input data channel in the multiplexed input signal indicating the destination of the data in that channel to the particular one of the plurality of subscribers; a subscriber terminal demodulater for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal demodulater, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network, said outgoing telephony signals to the telephony network comprising a digital multiplexed output signal including a plurality of output data channels, the position of a particular output data channel in the multiplexed output signal indicating the origin of the data in that channel from the particular one of the plurality of subscribers; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator, said first coupler coupling the particular input data channel to a predetermined carrier in the forward band of the subscription network; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network, said second coupler coupling the outgoing telephony signals from the particular one of the plurality of subscribers in the reverse band of the subscription network to the particular output data channel.

Claim 6

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network, said incoming telephony signals from the telephony network comprising a digital multiplexed input signal including a plurality of input data channels, the position of a particular input data channel in the multiplexed input signal indicating the destination of the data in that channel to the particular one of the plurality of subscribers; a subscriber terminal demodulater for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal demodulater, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network, said outgoing telephony signals to the telephony network comprising a digital multiplexed output signal including a plurality of output data channels, the position of a particular output data channel in the multiplexed output signal indicating the origin of the data in that channel from the particular one of the plurality of subscribers; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator, said first coupler coupling the particular input data channel to a predetermined carrier in the forward band of the subscription network; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network, said second coupler coupling the outgoing telephony signals from the particular one of the plurality of subscribers in the reverse band of the subscription network to the particular output data channel.

Claim 26

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing at least one of said forward band telephony channels in the guard bands between two adjacent subscription channels.

Claim 27

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing at least one of said forward band telephony channels in the guard bands between two adjacent subscription channels.

Claim 28

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing said forward telephony channels in portions of the forward band unused by the subscription channels.

Claim 29

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing said forward telephony channels in portions of the forward band unused by the subscription channels.

Claim 30

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing at least two of the forward band telephony channels into adjacent locations in the forward band.

Claim 31

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said first modulator modulating each group carrier with QPR modulation having a bandwidth of approximately 3 MHz; said subscription network carrying a plurality of frequency division multiplexed 4.5 MHz subscription channels with a 1.5 MHz guard band on each side of a subscription channel; said first modulator frequency division multiplexing said forward telephony channels with the subscription channels; and said first modulator frequency division multiplexing at least two of the forward band telephony channels into adjacent locations in the forward band.

Claim 32

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a first demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said subscriber terminal demodulator including: a tuner for tuning at least one group carrier and demodulating said groups of telephony signals; a second demultiplexor, coupled to said tuner, for demultiplexing said groups of telephony signals into individual subscriber telephone signals; and a selector, coupled to said second demultiplexor, for selecting the individual subscriber telephony signal addressed to the subscriber.

Claim 33

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal element, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network; said incoming and outgoing telephony signals being selected from the group including SONET, OC-1, DS3, DS2 and E-1; said first coupler comprising a first demultiplexor for demultiplexing and decoding said incoming telephony signals into groups of telephony signals; said first modulator modulating each group onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network as forward telephony channels; said subscriber terminal demodulator including: a tuner for tuning at least one group carrier and demodulating said groups of telephony signals; a second demultiplexor, coupled to said tuner, for demultiplexing said groups of telephony signals into individual subscriber telephone signals; and a selector, coupled to said second demultiplexor, for selecting the individual subscriber telephony signal addressed to the subscriber.

Claim 35

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said subscription network carrying a plurality of frequency division multiplexed subscription channels, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network, said first modulator modulating a group of incoming telephony signals with QPR modulation onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network with said subscription channels; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal demodulator, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network.

Claim 36

An apparatus for the communication of incoming telephony signals from a telephony network to a plurality of subscribers of a subscription system and for the communication of outgoing telephony signals from the plurality of subscribers to the telephony network, said subscription system including a subscription network having a forward band of frequencies and a reverse band of signaling frequencies, said subscription network carrying a plurality of frequency division multiplexed subscription channels, said apparatus comprising: a first modulator for modulating the incoming telephony signals from the telephony network on a carrier in the forward band of said subscription network, said first modulator modulating a group of incoming telephony signals with QPR modulation onto a separate carrier which is frequency division multiplexed in the forward band of the subscription network with said subscription channels; a subscriber terminal demodulator for demodulating the incoming telephony signals from the subscription network and coupling them to a particular one of the plurality of subscribers; a second modulator, associated with said subscriber terminal demodulator, for modulating the outgoing telephony signals from the particular one of the plurality of subscribers on a carrier in the reverse band of the subscription network; an outgoing telephony signal demodulator for demodulating the outgoing telephony signals from the reverse band of the subscription network; a first coupler for coupling the incoming telephony signals from the telephony network to said first modulator; and a second coupler for coupling the outgoing telephony signals from said outgoing telephony signal demodulator to the telephony network.