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ChrisRR #579566 10/27/14 08:51 AM
Joined: May 2007
Posts: 5,059
Likes: 6
Moderator-1A2, Cabling
*****
Moderator-1A2, Cabling
*****
Joined: May 2007
Posts: 5,059
Likes: 6
Chris, I'm wondering if the solenoid releasing the line keys was designed to prevent you from accidentally disconnecting someone.

Situation:

A puts caller on line 1 on hold and does something else in the mean time.

B has line 1 depressed from last call, but hung up. B picks up phone without looking at lamp status. Expects dial tone, doesn't get it and depresses line 2. Caller on line 1 is disconnected.

With all buttons restored every time you hang up you must physically select a line and force you to look at line status.

Sam


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ChrisRR #579567 10/27/14 09:00 AM
Joined: Feb 2014
Posts: 660
Moderator-1A2
***
Moderator-1A2
***
Joined: Feb 2014
Posts: 660
I have managed to get all the lamps, and all the tip and ring connections figured out. I know one side of the a-lead but for the life of me can't figure out the common a-lead. I'm thinking it must go through one of the relays or something. I also was able to get the dial to work without modifying anything in the phone. Maybe something on the board makes the set polarity sensitive, which makes no sense with loop-disconnect dialing, but alas, it does dial now. I'm still trying to figure out how I'm going to get a ringer and a buzzer in there, as there are VERY FEW spare leads, and no access to any of the mounting cord leads because they are all terminated on plugs that connect directly to the key strip or the main PCB. Hopefully Uncle Arthur will come through with a schematic.

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Moderated by  ChrisRR, EV607797, Silversam 

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