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Use the [Up] and [Down] keys to select Loss or 
Noise/Longitudinal Balance setup and press the 
[Setup] key.
The Noise/Longitudinal Balance setup screen is 
identical to the screen above, except for the heading. 
Press the [Tab] key to select the parameter to edit. For 
the dial type and start type selections, use the [Up] 
and [Down] keys to select DTMF or Pulse dialing, 
Loop or Ground Start. If the test line number is 
selected, press the [Setup] key to enter or change the 
number.
Use the blue keys to enter a number. Press [Enter] to 
accept the entry and return to the previous screen.
Press the [Setup] key to change the Active pair 
parameters.