565 mystery?

[poplar1]

I don't think any 565/1565/2565 came with the exclusion electronics from the factory, per the BSP.

You are correct:

          Exclusion can be added to these sets by in-
          stalling a D-179935 Kit of Parts which must
          be ordered separately. Exclusion key can also
          be used to cutoff a ringer or buzzer in set.         502-525-436 Issue 1

[Babybearjs]

since we are on the subject of exclusion switches.... what about the 851 and 2851 series phones.... how would you add an exclusion switch to those phones?

[poplar1]

since we are on the subject of exclusion switches.... what about the 851 and 2851 series phones.... how would you add an exclusion switch to those phones?

Add an optional D-180243 Kit of Parts (Exclusion Switch Assembly)
Look up 503-601-101 issue 3 in TCI library-- it's shown in Fig. 12

[Babybearjs]

OK, now who has some?