Author Topic: NE-208A KEY TELEPHONE UNIT and 2564  (Read 3016 times)

Offline rtp129495

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NE-208A KEY TELEPHONE UNIT and 2564
« on: December 07, 2012, 02:02:10 PM »
Is this compatible with WE and ITT 2564 phones? It does have much of any info in the listing!

http://www.ebay.com/itm/370641274268

Offline AE_Collector

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #1 on: December 07, 2012, 06:49:58 PM »
It is 1A1 equipment, probably an intercom system but I am not certain. Someone will know.

You are probably looking for a KSU to operate one or several phone lines on your key set and you mightv want a dial intercom for one of the spare line keys as well.

A "stuff; system or if space isn't a big problem you can get a "six pack" that will do up to 6 lines and it should have a power supply and a dial intercom built in as well.

Look around the new 1A1 / 1A2 Key System area for some more help.

http://www.classicrotaryphones.com/forum/index.php?board=64.0

Terry

<edit> added pictures
« Last Edit: January 11, 2013, 11:41:34 AM by AE_Collector »

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #2 on: January 11, 2013, 03:16:24 AM »
if you are referring to the WE 208 that's been on Ebay forever, its from Phoneco, Inc. mary's neice handles the companies ebay postings and you can view it on their regular hompage of: www.phonecoinc.com look under the parts page and scroll down to the KSU section... she has a ton of 208's that nobody wants.... all the remaining KSU's are still going for only $9.99 each!  that's where I got all my equipment from!   John
John

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #3 on: June 23, 2014, 02:44:56 AM »
OK, now I have one of these, so now I need help in setting it up... the schematic from BSP 518-114-110 it confusing...the "Tip" & "Ring" is easy to understand... but the rest is kind of confusing... too many letter references.... a, b, c, d, e, f, and g....and then things get sticky.... I see terms 25, 26, and 27 go to my 212... Terms 38 and 40 (which I changed to 39/40) are my battery.... 28/30 are my Lamp Battery... then the LS wires.... go where?? between 207's?? I guess this is for multiple 207C units?? then it looks like I have an "A-lead" (H) which I'm not sure what to do with.... the 207C doesn't support a hold feature...this is confusing.... can someone help explain this unit?
John

Offline poplar1

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #4 on: June 23, 2014, 02:11:22 PM »
Lamp Battery goes to 28 and ground to 29 (not 30) per ISS 3, 518-114-400.
Filtered -24 VDC goes to 39 and ground to 40.

Not sure if this is the same as you are trying to do, but there is a diagram in 518-114-419, Issue 3, showing a 207 (A, B, or C) +208A + 209A or 212A for "Dial Selective Intercommunicating Circuit with flashing line lamps." In that diagram, LS leads are referred to as "C leads."
Each 208 serves three stations. On the first station, the C lead is assigned to terminal 18, and the station leads are 1 (T), 2 (R), 3 (A), 33 (L), and 30 (LG). On the second, C=19, T=6, R=7, A=8, L=34, LG=31. On the third station, T=9, R=10, A=11, L=35, LG=32. (A1 of the station connects to 4.)

According to the same diagram, the C leads from the 208A connect to 10A and 3A on the 207C. And the T, R, A, A1, LG and L connect to the station (phone). However, I believe these 10A and 3A were chosen because the diagram shows stations 0 and 3.

« Last Edit: June 23, 2014, 03:10:34 PM by poplar1 »
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Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #5 on: June 24, 2014, 02:42:11 AM »
I moved term. 28 to 29 so that its easier to wire... most of all your power terminals are the last 2 terms in the row... why they did 28/30 doesn't make any sense since all the other KTU's use 9/10, 19/20,29/30, or 39/40 for power connections....it must have been a designer who was asleep at the wheel when it was designed.   thanks for the help...
John

Offline poplar1

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #6 on: June 24, 2014, 12:41:37 PM »
I'm still confused when you say "Terms 38 and 40 (which I changed to 39/40) are my battery.... 28/30 are my Lamp Battery.."--do you mean battery and ground?

If 36, 37 and 39 are strapped together and connected to B BAT., and 38 is B GRD, I don't see how you can interchange 38 and 39.

A through F are designated as follows:

REFERENCE              PUNCHING
DESIGNATION     CKT 1   CKT 2  CKT 3

A (TIP)                 1           6           9

B (RING)              2           7          10

C (L)                  33         34         35

D  (A)                  3           8          11

E  (C)                 18        19          20

F (B BAT.)           22         23         24

G (LG)                30        31         32

Telephone Set connects as follows:

Tip to  A (i.e., 1, 6, or 9, depending on whether it's the 1st, 2nd or 3rd station)
Ring to B (2, 7, or 10)
A lead to D (3, 8 or 11)
A1 to 4
Lamp to C (33, 34 or 35)
Lamp ground to G (30, 31 or 32)

Power supply:
B BAT to 39,
B GRD to 38
Lamp Battery to 28 (strapped to 27)
lamp ground to 29 (connects to G= 30,31, 32)

To 207A, B or C KTU:

          208A:                                            207B or C:

12----------------------------  ("T").................1B==11B==21B   
E (18, 19 or 20)------------ ("C").................to selector (3A, 10A for example)
17 strapped to F (22, 23, 24)
17.....................................("A").................23B
13.....................................("R").................2B==12B==22B
15.....................................("D")................3B
14.....................................("H")................26B==28B

To 209A or 212A:

208A:                                                           212A:

26......................................("LF")................???
25......................................("TO")..............???
27 strapped to 28
27.....................................("LB")................???

Ref:
Section 518-114-110, Issue 4, July 1979
Fig. 8 and Fig. 9
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #7 on: June 24, 2014, 03:52:08 PM »
disregard the part about the change, it was my 210KTU I changed, not the 208.... because the 210 had unused terminals I moved wire 28 to 29 so the power was on 29/30 instead of 28/30... why they did that I don't know....
John

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #8 on: June 29, 2014, 12:47:20 AM »
OK, here we go.... Now, I scanned a copy of page 13 into my computer, and highlighted some circuit paths. Tip and ring are obvious, but I don't understand "C" (desig. "E") and "A" (Desig. "F", "D") the problem is that "A" is battery "B". which would make this part of the circuit the "A" Lead circuit, which is already present  in my 212... would this interfere with the other systems?? I see I have to tie this into my 212...for the TO circuit.  after studying the schematic it looks like this circuit creates the "A" lead circuit that is not used in the 207... correct me if I'm wrong, but the setup is as follows:

  Tip: 1,6, and 9
  Ring: 2,7, and 10
  A-Lead (H): 3, 8, and 11
  Lamp: 33, 34, and 35
 
  once these connections are made, the system should work the way its suppose to... and from what I understand.... this creates 3 individual ICM circuits... Or is it 3 individual phones?? if that's the case, then all the lines have to originate from the 208, not the 207....  right now, all my ICM lines are parallel and would have to be separated to create the 3 circuits....
« Last Edit: June 29, 2014, 12:52:09 AM by Babybearjs »
John

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #9 on: June 30, 2014, 04:24:59 AM »
Well, this isint working..... its like algebra.... I just don't get it.... on page 13, C turns into H but stays on the 207.... A goes to term 17 and is suppose to terminate at 23B on the 207, if this is suppose to work, then isin't my H-lead from the telephone set suppose to go to 23B?? then if this is suppose to be the H-lead... then where does terminal 14 go?? to 23B on the 207?? and the 15 is the lamp feed.... and then C is suppose to connect to 3A AND 10A??? what?? OMG! who designed this unit??? no wonder they discontinued the 1A1 system... flipping between Pages 12 and 13 is sooo confusing.... and to top it off, I have to connect the TO terminal to my 212! well, that's easy.... but it still doesn't work! what am I doing wrong.... 
John

Offline poplar1

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #10 on: June 30, 2014, 12:55:20 PM »
The first question I have is about a 208: Does this KTU have 3 circuits for 3 stations, or for 3 different intercoms?

I just assumed it was for 3 stations that were all connected to the same 207--in other words, all 9 stations (or more than 9 if you are also using 216s) would be on the same talk path, but there has to be a way to make only one lamp flash, i.e., the station being called, just as you want only one buzzer to sound, depending on which intercom number you dialed.

A diagram in Issue 3, Section 518-114-419 seems to confirm this: Fig. 1 shows a 207B or C, 208A, and 209A. There is also a table indicating where the C leads from the 207 (2A through 10A) connect to three different 208s:

208 Terminal Assignment:

                     C           STATION LEADS
STATION     LEADS       T    R    A    L   LG

1ST     2        18           1   2    3   33  30
208     3        19           6   7    8   34  31
          4         20          9   10  11  35  32     
---------------------------------------------------
2ND    5       18             1   2   3   33   30
208     6       19             6   7   8   34   31
          7       20             9  10  11  35  32
----------------------------------------------------

3RD    8       18            1    2   3    33   30
208     9       19            6   7   8     34   31
          0        20           9   10  11   35   32
------------------------------------------------
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline poplar1

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #11 on: June 30, 2014, 01:04:21 PM »
The "station leads" (T, R, A, L, LG) would be the connections to the telephone from the 208A. Also, the ringer or buzzer for each phone would connect to the 207 Selector terminals 12A-20A (station 2 buzzer to 12A, station 3 to 13A, station 4 to 14A,..., station 9 to 19A, station 0 to 20A.

The other bank of selector terminals in the 207 (2A through 10A) are the "C" lead connections going to the 208A.
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #12 on: July 01, 2014, 12:46:43 AM »
Ok, I understand this part... now, what are the "C" leads for?? this part I don't understand...
John

Offline poplar1

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #13 on: July 01, 2014, 02:18:26 AM »
C leads are the flashing lamp control leads. Each intercom code (digit dialed) requires a separate C lead from the 207 to the 208.

You need a 208 for every three intercom codes (extension numbers). So if you want to start with intercom code 2, 3 and 4, then you would

(Station 2) Run a wire from 2A on the 207 to 18 on the 208;
(Station 3) Run a wire from 3A on the 207 to 19 on the 208;                                                   
(Station 4) Run a wire from 4A on the 207 to 20 on the 208.

The lamp/lamp-ground leads from the phones (Slate-black pair on the 5th button of a 564) connect as follows:

(Station 2) Slate-black from phone (lamp) to 33 on the 208; Black-slate (lamp ground) to 30.
            (3)                                  (Lamp)     34                                         (LG)              31
            (4)                                                 35                                                             32



                                                     
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline Babybearjs

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Re: NE-208A KEY TELEPHONE UNIT and 2564
« Reply #14 on: July 04, 2014, 01:50:33 AM »
so that's what the other contact points are for....now I understand that part.... I just wish the schematic had explained that! it would have been easier to setup.... I've shelved the project for now.... but at least I'm starting to understand the connections... so, I need 2 or even 3 more 208's...so, if I have 19 extentions....what would I need for parts??
John