Can anyone tell me what this is called? and whats the missing part? it use to be the connect to the modem/router for the back house?

Can anyone tell me what this is called? and whats the missing part? it use to be the connect to the modem/router for the back house? PICTURE OF THE QUESTION: https://ibb.co/yqZ4zvT
Answers

VP: Confusing picture. Some Q's for you

Confusing picture. Some Q's for you: - Why are you holding the pink thing? - Does the green thing have any words on the other side? - Is there a box nearby this wire? If so, does it say anything on it? - Are you standing inside or outside the house?

Turtle Bay 777

The pink bit or the green bit?