atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems 18D KTU to provide A Lead control

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18D KTU to provide A Lead control #642071 01/30/22 10:37 AM
Joined: Feb 2012 Posts: 104 orlando, fl [email protected] Member
[email protected] Member Joined: Feb 2012 Posts: 104 orlando, fl	I've read on this forum that the 18D KTU will provide A Lead control when connected in front of the 400-type KTU. I need 2 for my home application (I have one already). These hardly ever come up on eBay; I see relays out there now, the... 2A 5A 6B 17B Can any of these be used (I didn't locate info in any BSPs on these)? I only need the function to show line in use, not removing from hold if this makes a difference. Thanks for any guidance! Jim

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Re: 18D KTU to provide A Lead control [email protected] #642072 01/30/22 11:44 AM
Joined: Dec 2007 Posts: 6,819 Likes: 21 Canby, Oregon Professor Shadow Retired Admin
Professor Shadow Retired Admin Joined: Dec 2007 Posts: 6,819 Likes: 21 Canby, Oregon	Have you tried checking here: https://www.telephonecollectors.info/ Dean Photographs: https://www.instagram.com/deanwilsoncanby/ https://fstoppers.com/profile/deanwilsoncanby https://www.facebook.com/Dean-Wilson-Photography-112841337020414 _________________________________________________________________________________________ Retired: That means I don't have a job description and I can do what I want.

Re: 18D KTU to provide A Lead control Professor Shadow #642110 02/03/22 06:38 PM
Joined: May 2007 Posts: 5,058 Likes: 5 NYC Silversam Moderator-1A2, Cabling
Silversam Moderator-1A2, Cabling Joined: May 2007 Posts: 5,058 Likes: 5 NYC	The 18D is the one to use. I never had any, but I did use 6Bs. They gave an off=hook indication, but as I recall they wouldn't break hold. Sandman used to sell A- Lead control stuff as did...Crest? Maybe. The 2A was as i recall for T&R for an ICM (I could be very wrong - it's been a l o o o n g time. The 17B was a DPDT relay. I'll email you PDFs of the relays that I have. Sam "Where are we going and why are we in this hand basket?"

Re: 18D KTU to provide A Lead control [email protected] #642111 02/03/22 07:42 PM
Joined: Jan 2008 Posts: 92 Likes: 5 Los Angeles, California Greg Ercolano Member
Greg Ercolano Member Joined: Jan 2008 Posts: 92 Likes: 5 Los Angeles, California	I have a few synapses in my brain jumping up and down saying ChrisRR had some A lead control boards some years ago, and I think had some to spare (at the time). He had board designs and such I think, and they're /probably/ easy to build. Not sure though..

Re: 18D KTU to provide A Lead control Silversam #642112 02/03/22 10:20 PM
Joined: Apr 2018 Posts: 154 Dallas Tx morephones Member
morephones Member Joined: Apr 2018 Posts: 154 Dallas Tx	Hi Sam, I also be interested in your PDF of Relays.

Re: 18D KTU to provide A Lead control morephones #642116 02/04/22 09:55 AM
Joined: May 2007 Posts: 5,058 Likes: 5 NYC Silversam Moderator-1A2, Cabling
Silversam Moderator-1A2, Cabling Joined: May 2007 Posts: 5,058 Likes: 5 NYC	Get me an email address and I'll send you PDFs. Unfortunately, the only ones I still have are the 6B, the 15D and the 17B. Sam "Where are we going and why are we in this hand basket?"

Re: 18D KTU to provide A Lead control [email protected] #642122 02/04/22 10:39 PM
Joined: Apr 2018 Posts: 154 Dallas Tx morephones Member
morephones Member Joined: Apr 2018 Posts: 154 Dallas Tx	Sam, I just sent you a pm with me email..

Re: 18D KTU to provide A Lead control [email protected] #642125 02/05/22 09:56 AM
Joined: Feb 2012 Posts: 104 orlando, fl [email protected] Member
[email protected] Member Joined: Feb 2012 Posts: 104 orlando, fl	Hi Sam, Thanks for providing the diagrams for the KTUs (I traced down the BSP # and found the complete documents). Luckily, there are 6Bs on ebay, and I just ordered them. Can't wait to test and compare their operation to the 18D I have on another line. Since I'm only looking for the line-in-use indicated via A-Lead, the 6B may be the ticket! I'll post my results. Thanks for helping. Jim

Re: 18D KTU to provide A Lead control [email protected] #642138 02/07/22 12:02 AM
Joined: Apr 2018 Posts: 154 Dallas Tx morephones Member
morephones Member Joined: Apr 2018 Posts: 154 Dallas Tx	Hey Jim, Another option is to use a Radio Shack Duofone Telephone Multi-Line Controller item # 43-233, they come up on Ebay time to time. But the 6B KTU can be more of a nicer installation do to its size. .

Re: 18D KTU to provide A Lead control [email protected] #642139 02/07/22 11:02 AM
Joined: Dec 2007 Posts: 6,819 Likes: 21 Canby, Oregon Professor Shadow Retired Admin
Professor Shadow Retired Admin Joined: Dec 2007 Posts: 6,819 Likes: 21 Canby, Oregon	EBay https://www.ebay.com/itm/184995740674 Dean Photographs: https://www.instagram.com/deanwilsoncanby/ https://fstoppers.com/profile/deanwilsoncanby https://www.facebook.com/Dean-Wilson-Photography-112841337020414 _________________________________________________________________________________________ Retired: That means I don't have a job description and I can do what I want.

Re: 18D KTU to provide A Lead control [email protected] #642661 04/30/22 08:56 PM
Joined: Jan 2005 Posts: 15,386 Likes: 13 Fayetteville, NC EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire
EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire Joined: Jan 2005 Posts: 15,386 Likes: 13 Fayetteville, NC	The 6B KTU was fairly common and might be easier to find. This is the purpose for which it was manufactured. Ed Vaughn, MBSWWYPBX