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In many job applications the WT2833NL handset must be
modified so the tenant in the apartment cannot use the
WT2833NL as a conventional telephone to dial out. The
WT2833NL can be field modified to disable one or more of
the keypad buttons to prevent dialing out. Follow these simple
steps to modify the WT2833NL handset. If you wish, you
can order these handsets already modified by us. Order them
as our model # WT2833NLKP.
TOOLS REQUIRED: 1- small slotted screwdriver, 1- small
Phillips head screwdriver and 1- sharp knife or razor blade
or Xacto knife or similar cutting tool.
STEP 1. Remove the coiled cord and telephone base and
set them aside. Insert the small slotted screwdriver into the
seam on either side of the handset's cord jack. Gently twist
the screwdriver clockwise and pry the phone apart. Remove
the top of the handset and set aside (see Fig 1.).
STEP 2. Remove the coiled cord jack and microphone from
their holders. Be very careful when removing the micro-
phone. Do not pull the microphone up by the attached
wires!! You may have to remove a small piece of masking
tape that is across the microphone. Put this tape aside, so
you can reuse it later. Remove the three (3) visible Phillips
head screws (see Fig 2.).
STEP 3. Gently flip the top circuit board upward and out of
the way. This will expose the last Phillips head screw (see
Fig. 3). Remove this screw and lift the lower circuit board
upward, exposing the back side of the keypad (see Fig. 4).
STEP 4. With suitable cutting tool (as indicated above),
completely remove the black portion on the back of the key-
pad button, behind the rubberized keypad (see Fig. 5). Be
careful to only remove as much material as needed to re-
move the black portion of the button! Make sure that you
have removed all traces of the back material, to prevent the
button from making contact with the PC board surface. Do
not modify any buttons that may be required to allow this
telephone to activate