xDSL interconnecting device and communication system

A communication system comprising:

• an xDSL concentrator operable to convert a received digital signal to an analog signal to output said analog signal;
• an xDSL interconnecting device operable to receive from a first analog line said analog signal output by said xDSL concentrator to output said analog signal to a second analog line;
• and
• an xDSL converter operable to convert said analog signal output by said xDSL interconnecting device to a digital signal to transmit said digital signal to a users terminal, wherein
• said xDSL interconnecting device includes:
• a first analog transmit/receive unit, connected to said first analog line, operable to transmit an analog signal having a first frequency band to said first analog line and to receive an analog signal having a second frequency band higher than said first frequency band from said first analog line;
• a second analog transmit/receive unit, connected to said second analog line, operable to transmit an analog signal having said second frequency band to said second analog line and to receive an analog signal having said first frequency band from said second analog line;
• and
• an interconnecting unit, connected to said first analog transmit/receive unit and said second analog transmit/receive unit, operable to interconnect communication between said first analog transmit/receive unit and said second analog transmit/receive unit.