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Joined: Dec 2007
Posts: 6,803 Likes: 18
Retired Admin
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Retired Admin
Joined: Dec 2007
Posts: 6,803 Likes: 18 |
I knew I read somewhere that Sam would know...
From a 07/09/10 post "On some sets (2564 series) there was only a 16 pair cable (if I remember correctly) and the violets, all the A1s but the first one and some other leads"
Wh/Bl -1 Tip Bl/W - 1 Ring W/O - 1A O/W - A1 W/Gn - LG Gn/W - 1 Lamp
W/Br - 2 T Br/W - 2 R W/SL - 2A SL/W - A1 R/BL - LG BL/R - 2L
R/O pair - 3 T/R R/Gn pr - 3A/A1 R/Br pr - 3 LG/L
R/SL pr - 4 T/r Bk/BL pr - 4A/A1 Bk/O pr - 4 LG/L
BK/Gn pr - 5 T/R Bk/ Bn pr - 5 A/A1 Bk/SL pr - 5 LG/L
Y/BL or Y/O pr - usually assigned to the buzzer for Intercoms
Y/Gn pr - Often assigned as a Lamp for the Hold button (Misc. features)
Y/SL pr - always assigned for the Ringer wired for the "Common Bell"
The Violet group was usually set aside for speakerphone leads. On some sets (2564 series) there was only a 16 pair cable (if I remember correctly) and the violets, all the A1s but the first one and some other leads (Some LGs maybe?) were missing completely.
And no, without a KSU you would need a separate ringer for each line.
Also the correct term is a "Key Telephone" or a "Key Set" a KTU is actually a "Key Telephone Unit" - which is a circuit board that plugs into a KSU (Key Service Unit) - the things that make key telephones work.
Sam
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