| abstract |
A telecommunication system includes a digital switch, a local loop coupling the digital switch to a subscriber location, wherein a segment of the local loop includes copper twisted pair and wherein an asymmetrical digital subscriber line (102) is carried by the local loop, the asymmetrical digital subscriber line (102) including a plurality of digital packets capable of carrying a plurality of derived digital telephone lines. The telecommunication system further includes a subscriber unit coupled to the asymmetrical digital subscriber line (102). The subscriber unit monitors the content of at least one of a plurality of data packets, receives an off-hook signal in response to an action of a user, and initiates a first arrived digital telephone line of the plurality of data to derived digital telephone lines in response to the off-hook signal. |