I have a nice WE 565HD+ that is missing its exclusion switch. It still has the white plunger knob, fortunately. I found an ITT switch on Ebay that is for a 2565 (touch-tone) version. Is this the same part as for a rotary 565? Thank you!
If it fits, I would use it. I would plan on eventually replacing it w/ the WE part. I also don't worry if eventually ends up being double digit years away.
JMO,
Jim S.
Yes.
That's a great find. I think the keys were installed in the field. Most of the phones with the white plunger never had the key. Check the BSP for wiring. It can be a little confusing. It basically passes line 1 T and R and A control to spare pairs for an outside extension. When you pull up on the key, it opens all leads, "excluding" that person. I used a 149b connecting block to access the pairs from the exclusion key to a RJ11 plug for my 500M. It makes for a nice demo.
Thanks for all the input! I will definitely refer to the BSPs when installing. Hopefully, ITT used the same wire colors!!
Connections for 1A1 or 1A2 Key
Exclusion Key: Terminal: Mounting Cord:
W ET V-BL
BL ER BL-V
R-BK EH V-O
R-GN EB O-V
G-Y T*
R-Y R*
BR-R EB
BK-W H*
* Terminal of line involved
For Line 1:
G-Y 1T W-BL
R-Y 1R BL-W
BK-W 1H W-O
http://telephonecollectors.info/index.php/document-repository/doc_details/4953-502-525-405-i3-565hdr-connections (TCI)