Device and associated method for measuring crosstalk

A device comprising:

• an interface to at least one active subscriber line within a network;
• an interface to at least one inactive subscriber line, the inactive subscriber line connected to an associated piece of terminating equipment that has not yet performed a handshake operation to the network, the inactive subscriber line remaining inactive until the associated piece of terminating equipment completes the handshake operation;
• means for transmitting a first signal on said inactive subscriber line before said inactive subscriber line is initialized via the handshake operation;
• means for synchronously measuring crosstalk induced into said active subscriber line by transmitting said first signal on said inactive subscriber line;
• means for transmitting a second signal on said active subscriber line;
• means for synchronously measuring crosstalk induced into said inactive subscriber line by transmitting said second signal on said active subscriber line;
• and
• means for mitigating the measured crosstalk induced into said inactive subscriber line and said active subscriber line by reducing bitloading on said active subscriber line before the inactive subscriber line is initiated with the network via the handshake operation such that upon the initiation of the inactive subscriber line the crosstalk induced into said active subscriber line is less than the measured crosstalk induced during transmission of the first signal.