How to get it all connected?

J

Jane B.

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I have a direct connected TTY and a regular landline phone and want to add a Caller ID Name & Number Display Unit. What order should these be connected starting at the phone jack outlet in the wall.
 
Normally caller ID is before the phone so I would take wire from the wall and plug it into caller ID then plug new wire to what the old wire was in.

If current is wall to phone then new is wall to caller ID to phone.
 
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