I have a 2830 phone that I thought was compatible with the 4A speakerphone system, but I cannot get it to work when hooked up one. Is there another 28xx that is, comparable to the 2564 and 2565?
All 2830 type sets are compatible with the 4-A speakerphones.
Please describe how you are trying to hook it up. Perhaps you're missing a part or two. Specifically, does your equipment resemble the picture on page 3 in this BSP?
https://bellsystempractices.org/500-/512-/512-740-470-i06_1979-09-01.pdfThe wiring diagram is on page 4. If you follow that carefully, it will work.
As to your second question "Is there another 28xx that is, comparable to the 2564 and 2565?"
The 564/2564 will not work with a speakerphone. The 565/2565 will. None of the 6-button phones are "comparable" to a 83x/283x. Except for being 1A2 key sets, they are entirely different phones.
Thank you for your prompt reply. I know the difference between the 2564 and 2565, although they look identical: What I was getting at in asking if the 28xx was comparable to the 2564 vs. 2565, is that could the 2830 or 28xx be non-speakerphone compatible and a 2831 or 28xx be speakerphone compatible? I really am not very familiar with the whole 800 and 2800 series of phones.
I will try the schematic. Does it matter if one uses the 223 adapter vs. the 82B connicting block, which is what I have? My 2830 does not seem to have any extra leads as the old 2565 did to hook up to anything; that's why I wondered if it was speakerphone compatible in the first place.
The 82 type connecting block is not designed for the 830/2830. You need to install the system exactly like the diagram in the BSP on pages 3 and 4.
The 565 series phones have 5 PU keys, using 2.5 pairs each. Add an A ground, a pair for the buzzer, and a pair for the ringer, and you have 30 conductors, leaving 20 spares. Some of these spares are brought out and used in the 82-type adapter.
In an 830/2830, all 50 leads are used. 9 PU keys, times 2.5 pairs = 45 leads. Add the A ground, the buzzer pair and the ringer pair, and you have used all 50 leads. Therefore, you need to provide the extra speakerphone leads with the cord that comes with the 228 adapter.
OK, that makes sense. I have the cord and the 223 adapter but I don't have the cord that provides the power. Do you or any other persons have one of those cords?
If you will read the wiring diagram (Fig 2) on page 4, you will see how the power is connected if the optional key system power supply is used instead of the 85-type transformer. See Note 2, specifically. Since you say you don't have the M2FG cord that terminates in the small plug, you need to use the alternate method. If you have the transformer, but don't have the cord, then just use Note 2 and use the transformer where it calls for the KSU supply.
Ok, thanks Arthur, I was going to reply today if you or someone else didn't have the M2FG cord and ask if what you suggested above was possible.
I have one other question however: does 4A speakerphone require a special dial? Are all the 35x series dials the same? It seems some have 8 wires, some 12 and some 13, but don't quote me on this.
Arthur, thanks for your help but there is one thing I forgot to ask you. On page 2 of the BSP you referred to, there is a table A which has some modifications. I am not sure what the "new line switch" is and where it would be located to even find it. Also the BSP refers to "MFR before 2-77": does this mean there is no new line switch if manufactured before 2-77 or you don't have to do this modification if manufactured after 2-77? The dial in the phone is dated 1974, but the phone itself is stenciled 1981. Could 1981 mean it was refurbished then?
BTW, Happy Holidays to you and all members of this forum!!
Line switch = switch hook contacts (in Western Electric parlance) = hook switch contacts (in the words of other manufacturers) = contact parts that move when you pick up or hang up. I'm sure you can find it, now that you know what it is.
It says to refer to the wiring changes if the telephone is manufactured after 1-77. It also says that to identify a new line switch, look for two blue leads. If it's dated 81, you need to find its original manufacture date, which will be stamped under the rebuild sticker, or stamped on the network.
Yes, rotary and tone dials used in telephones that have speakerphones attached are different. They have extra contacts that mute the speaker during dial pulsing (in the case of rotary dials) and mute the speaker and the transmitter during dial button operation (in the case of tone dials.)
This is one of the major differences in 564/1564/2564 vs 565/1565/2565 sets. I believe that all 83x/283x-type sets came factory-equipped with the correct dials for speakerphone service.
All of these questions can be answered by studying the BSPs for sets, dials, adjunct equipment, parts, etc. It's all in the books. You also need to understand that the last time I worked on this stuff was over twenty years ago, so when it comes to my knowledge, versus the BSP information, my advice to you would be to trust the BSP's.
I kind of figured the line switch must be the switchhook but there is a med. blue and darker blue set of wires coming from the switchhook and terminates on #8 and #16. I still am confused about about the manufacture date. There is no refurbishing sticker on the back, just a stenciled date. The network is from 1981 as well but the dial is from 1974. So is this manufactured in 1974 and refurbished in 1981, or was it manufactured in 1981 but someone put a 1974 dial in it? That's partly why I asked you about the dial too. Could someone have put the wrong type of dial in it? Unlikely but a possibility? Bottom line: would you move the green lead from #8 to #16?
Bill:
If you have the blue leads on the switch hook, then the set was more than likely manufactured in 1981 and someone just put a used or refurbished replacement dial in it.
Thanks, Ev. I guess you are saying I should not move the green lead from #8 to #16 since it was manufactured after 1977 according to page 2 of the BSP. Whether I moved it or not, I still cannot get the speakerphone to work. I believe the transformer is supplying power via the M2FG cord because I hear a click when I push the ON button, but no dial tone.
I feel maybe I have hooked up something wrong from the M16C cord to the 2830 set. I am not sure what all the symbols mean on the schematic, but they seem to be hooked up correctly. If I go with the X option, should I hook up the S-W and W-S to terminals G and A on the network? What does the pi symbol mean, spare terminal? Are they to be hooked together on a spare terminal? Which spare terminal? Are terminals 6 and 12 on the 108 supposed to be strapped together? I never did that with any other of my 108 speakers.
It has been almost two weeks since my last post above so I take it no one knows or cares. Thanks to a kind member of TCI, I was able to get it working. The problem was a defective 108 speaker which is unusual to the point of wierd because I had tested it several times with my usual 4A speakerphone setup and it worked fine.
I will go ahead and answer the questions I posed above. I did move the green wire from Terminal #8 to #16. Then, all one has to do is connect the following wires from the M16C cord to the following locations on the terminal board: W-BR to 10, W-O to 22, BL-W to 6, W-BL to 25, G-W to 24, W-G to 30, and O-W to 29. Additionally, place W-S to G and S-W to A on the network. The other wires from the M16C cord are insulated and stored, and with my cord, they already were.