Why does Amanda Ripley insert a key card into an emergency telephone when saving the game?

Question

In Alien: Isolation, the player saves the game by interacting with an emergency telephone booth. The game save interaction consists of Amanda Ripley, the player character, inserting a key card into a slot on the telephone. The player will then be prompted to save the game. Ripley does not use the telephone to call someone.

In-universe, what is Amanda Ripley trying to accomplish by inserting a key card into an emergency telephone? I'm not sure why she logs in with her key card regularly (and what information is she logging in). Is this an attempt to communicate with someone (and if so, who)?

Is there a reason for what exactly Ripley is doing, or is the entire emergency telephone booth interaction just to allow the player to save the game (exemplifying the Gameplay and Story Segregation trope)?

Answer 1

The answer is actually written in the instructions on the device itself: to log your details with the mainframe. The keycard is a login/authentication dongle. Removing it before authentication is complete invalidates your login.

The handset for communication is a secondary function.

(Added)

I know it sounds facetious, but you are Ripley. In-universe, your motivation is to log your progress should you choose to. Neither Ripley nor the player are compelled to use these stations (its been a while since I played it, but there may be one or two times, such as for tutorial reasons).

Given that everything is "Corpo-oriented" we can guess that the log might be used for resource and job tracking.

Obviously because we know it saves game state, we wind up making Ripley look a little obsessive about record keeping.