External Connection Terminal

An External Connection Terminal (外部接続ターミナル) is a terminal which allows connection to the internet outside of Academy City.

Background
Academy City runs on its own network and is detached from the normal internet that the rest of the world uses. The external lines that connect to the outside internet all have to pass through an External Connection Terminal to make contact. There are four terminals found in the north, south, east, and west of Academy City. In an emergency they can all be cut off to completely separate Academy City from the outside internet.

Battle Royale Arc
After it was reported to GROUP that someone was attempting to hack the Virus Isolation Center, Academy City attempted to shut down the External Connection Terminals but the one in the west would not shut down. Due to this GROUP went to the terminal to physically cut access by disconnecting the cables. It was originally thought that this was SCHOOL's doing, however it was later discovered that it was done by BLOCK to turn Academy City's network counter-measure team into a state of confusion while they attempted to gain control of the Hikoboshi II satellite.