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Joined: Apr 2009
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I have to install a ITT 1A2 system, that looks similar to web page . Only thing is it has two empty, longer slots below the k400e line card slots. I'm not familiar with 1A2 systems at all. I've tried looking at various diagrams, etc, but haven't been able to make this work. There is two 66 style blocks on the back part of the system. 1st block isn't split. From what I can tell it is the output side to phones/devices. Labeled A. 2nd block is labeled B and C. Bottom part of C is labeled CO. I have line one attached to 1t and 1r, going off memory. A is labeled 1t, 1r, 1a, a1, lg, 1l. Which looks to be 1tip, 1ring, "a", lamp ground, lamp supply. Then it repeats. the Telos web page page 2-6 is the pin out. I do get a good dial tone at the 66 block in the room that the telos is in. But it won't seize the line. I figured w/b would go to 1t, b/w to 1r, w/or "lamp" to 1l, or/wh "a" to 1a, y/br and y/gr to LG. Though I think I left out bl/y to a common, or a1. Am I right?
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Joined: May 2002
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Assuming you're using a 25pr cable with amphenol end. W/bl pair will go to the 1t&r, w/or pair to the a a1 and the w/gr to the l lg. You incoming CO line will go on the bottom where it's labeled CO from there it will go through the 400 line card to you A block. Yellow green is your buzzer leads and yellow slate is for the common bell.
The longer slots are probably for intercom cards. I'm assuming 6 button phones.
EDIT: You're diagram isn't for 1A2. It's for the Telos 10 unit. I may be all wet here, is the 1A2 working and you're just adding the Telos?
Retired phone dude
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Joined: Apr 2009
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it was a system, that was plugged in to the wall outlet, but no telecom wire hooked up. No phones. The Telos 10 is to control, access, off, and put on hold callers to the radio station.
The Telos has a 25 pair, with a amphenol, which I connected to a 66 block assembly with a amphenol connector. On the other side is the 25 pair up to the attic where the phone system is. I bridge through the connections here, and in the attic, to the phone system 25 pair.
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Joined: Aug 2008
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Does that model of Telos have the screening function built in?
Cause if it does, you don't need an *actual* 1A2, just a jack wired the right way.
If you need an external screener phone, then you'll need to do *something* to pick up the ringing calls and put them on hold for the host to take them on the Telos, but it won't necessarily have to be a "real" 1A2 keysystem, which would be a bear to install just for that.
Back up to about 1000ft, and try to give us the overview of what you're trying to do.
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Joined: Feb 2005
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The Telos gets connected just like a 1A2 phone except (I believe) no CAs. T, R, A, A1, LG, L for each line that you have. The first set is line 1, the second set is line 2 etc. Match them up with the Telos starting with W/BL.
You can have 4 lines with that KSU.
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Joined: Feb 2005
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If you need an external screener phone, then you'll need to do *something* to pick up the ringing calls and put them on hold for the host to take them on the Telos, but it won't necessarily have to be a "real" 1A2 keysystem, which would be a bear to install just for that.
Not a bear at all, there would be just one phone, the Telos and some 25 pair.
The problem I have is whether the OP realizes that with that KSU and one 25 pair cable he can only have 4 lines. Yeah, it would be a bear with a bigger KSU and multiple cables.
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Damn, it's been so long since I touched a 1A2 25-pair that I forgot how small the line count actually was...
You know, I guess we need to know how many lines he's feeding into the Telos... but I don't see that he told us.
But assuming the Telos will hold the line; and that he really only needs 4 lines, I think I would just wire the 25-pair appropriately, and then run the screener lines to a 4-line phone like an AT&T 965, with on-board hold.
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Joined: Apr 2009
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Sorry, only care about two lines in to Telos.
I don't this this model has a screener, it has no speaker, or handset. There is only one 25 pair connected to the telos.
There is a regular two line phone, connected to the co lines, but not through the 1A2 system.
The telos is just for connecting people to broadcast radio, and for putting people on hold.
I'm all ears on the best way to do things.
The problem is this model Telos 10 seems to require 1A2 to put people on hold.
The telos web page link is the model's pdf manual.
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Joined: Aug 2008
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Ok. One more question: once the host has picked up a caller on the Telos, do they need to put them *back* on hold?
If you'll never need that facility, then you can just parallel a 2-line phone to the 2 lines of the Telos and use whatever on-board facilities it has to deal with it.
The screener can take the calls, put them on hold, the Telos/host will take them off hold... and then hang up on them.
Or maybe it won't. Reading through that manual, now that I'm home and have the time, that guy *really* wants a 1A2 to play with.
You might well have to ignore everything I've told you here.
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