On more than one occasion, our expert in the field,
Black Sheep, has mentioned checking for details in the "ISIS" facility available to Openreach staff. I recall that when I last
made reference to
"Useful ISIS documents . . ." we had a brief discussion on acronyms.
Fuggi mentioned
"Think in the deep and distant past ISIS was "Inland Services Information System"."
Recently I was reading some BT documentation from the early 1990s and came across
". . . details are available from the Inland Services Information System (ISIS) and should be consulted for all possible configurations . . .". So sixteen month later, I feel duty bound to send the usual prize of kitteh treats (unlicked) to
Fuggi for providing the correct answer to the mystery.