T1 Configuration Menu Key Sequence: Configuration Signal Setup T1 Signal Setup Test Mode Select from one of three submenu keys for the type of test mode desired. AUTO Press this submenu key to automatically select a Framing Mode and Pattern to match the connected signal. For additional explanation of the use of this key, refer to section “AUTO Signal Setup Explanation”. DS1 Press this submenu key for T1 testing. DS3 Press this submenu key for T3 testing.