The insets below may shed some light ono issues of ringer loads, dating
back to the step-by-step days,
As an aside, the wire chief desk test gear included a very sensitive
galvanometer. In days where additional (unpaid) phones were hunted down,
the kick-up of that instrument could detect if extra ringers lurked on a line.
Needless to say, being raised in a telco family, sometimes served well
in days of youth.
