AT&T MERLIN 820 Installation Manual page 11

Add Jacks to the Jack Field
1
Position the jack panel box so that the door with the handle is on the
right, and attach it to the leftmost jack panel box in the jack field by
meshing the tongues and grooves as shown.
2
Use the screws provided or other appropriate fasteners to attach the
jack panel box to the wall or mounting surface supporting the jack field.
3
Snap a 4-line adapter into the box so that the jacks on the adapter face
to the right. If you have more than four outside lines, snap a second
adapter into the box in the same way.
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