Patent ID: 8351578

Claim:
A wiring verification system for testing the correct pairing of a plurality of subscriber lines between an existing line termination system and a replacement line termination system connected to the public switched telephone network, said wiring verification system comprising: a controller; a first test head responsive to said controller interacting with a test line which connects to the telephone network for the purpose of terminating a test call; a control interface responsive to said controller that communicates to a replacement line termination system for the purpose of establishing electrical connectivity between one of the subscriber lines and a line under test line; and a second test head responsive to said controller interacting with the line under test line for the purpose of originating a test call on the line under test line, via the existing line termination system, through the public switched telephone network terminating towards the test line; wherein said test heads and controller monitor parameters of the test call to determine whether the subscriber line under test in the replacement line termination system is associated with a same directory number as a corresponding subscriber line in the existing line termination system.