Adding some context: The perimeter seem to be not some individual system, but a feature grafted into all C3 gear that gives the launch officer a clear indicati

Adding some context: The perimeter seem to be not some individual system, but a feature grafted into all C3 gear that gives the launch officer a clear indication that the strategic command has been taken out, and an automatic decision making about what target plan to follow (remember, up until late 80s, all ICBMs had to be programmed at the factory, and the memory was scarce) Soviet ICBM infrastructure, and staff that was left outside of Russia confirm this, it had no provision for fully automated launch. Stationary launch positions especially were stuffed with all kinds comm gear to ensure that the silo is not cut off from the superior officers under any circumstances. At most, it is an automated target designation, and "fire at will" switch.