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7

The Numbered LEDs don’t indicate that a GOOD connection
exists, only that a connection exists. If the Short or Cross LEDs
are Lit, there is a fault in the cable.

7.6.4 Connected LED/3Beepers/Short LED/Numbered LEDs

If the Connected LED lights, the Beeper emits 3 beeps, and the Short 
LED lights, the cable has a fault. The Numbered LEDs indicate the 
location of a short. 

Note:

In the Short mode, the Numbered LEDs only indicated the 
location of the shorts. The other connections in the cable are 
not indicated. If more than 3 numbered LEDs light, there may 
be multiple shorts in the cable. 

7.6.5 Connected LED/2Beepers/Cross LED/Numbered LEDs

If the Connected LED lights, the Beeper emits 2 beeps, and the Cross 
LED lights, the cable has a fault.

Notes:

In the Cross-mode, the Number LEDs indicate connections 
but do not indicate the location of the cross.

RJ-11 cables used for telephone connections are often crossed.
Even  new  cables  are  often  crossed  .  This  seldom  affects  the
performance  of  standard  analog  telephone  lines(POTS).
Digital  telephone  lines  and  old  touch-tone  phones  may  be 
polarity  sensitive,  so  a  crossed  cable  may  prevent  them  from   
working properly.