atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services Security, Alarms and Paging Dukane MCS250 Operation Manual

Hey there. Been scouring the internet like crazy looking in particular for a copy of the late 80’s version of the Dukane MCS250 (not the newer 350 version).

It likely only exists in print given the age of the document but it has a particular page regarding the early model ACC’s the system used that I can’t find anywhere. Even from Carehawk who now owns the brand.

If anyone here can help please let me know.

I have this document, what information specifically are you looking for?

Keep in mind I haven’t seen this particular document in a good 15 years and I looked like it was done on a typewriter and bound in a light blue cover. I remember a page that had a diagram of an early ACC with numbered labels pointing the various components of the ACC.

It’s that page I’m trying to find.

Sorry, the only thing I have that remotely comes close to what you are describing are these two images from the documentation.

Yeah, that’s the same diagram in the current install manual.

The operation manual I remember seeing was dated 1988 and I remember the ACC (I’m going to guess the first or second model of ACC) looking something like the sketch I attached. The shape of the unit was slightly different.

It’s finding anything, even pictures of the ACC1 or 2 that have proven difficult.

I wish you luck in your hunt. I have boxes of older Dukane docs here, I will keep my eyes peeled for it. I am curious -- what do you need this for?

Trying to build a working system and trying to find the early model ACC’s, but anything before the ACC4 doesn’t seem to exist.

It’s the ACC thing and trying to figure out how to access the menus in the system programming that are in the manuals but do not show up on the ACC screen that have been the most challenging parts.

That means there is a software mismatch between ACC and digital card. The ACCs are backwards compatible -- an ACC5 will work on MCS250.
The closest I have er come to finding pre ACC4 is this: https://www.ebay.com/itm/374240119673

I’ve seen those “Teradon” units before and never quite known what they are supposed to be, as they don’t quite look like the Dukane quality of every other piece, and there’s no reference to them in any documentation I’ve seen.

The issue I’m having in regards to the menus I figured might have something to do with the ACC.
The CCU software version is 4.05 as it’s a fairly recent MCS350 digital card, however I only have an ACC4 (first revision) and ACC4B. I have ordered an ACC5 in hopes it will solve the problem. It’s the menus for Program Tones, Program Inputs, Program Outputs, Call-In Mode and Call-In transfer that are not coming up on the ACC.

It sounds like you have an MCS350... I can confirm using an ACC4 on an MCS350 will not display all of the menus, you need an ACC4D or better for that. You should not use anything earlier, including the Teradon unit (although it would work!) with your MCS350. I sell technical support by phone here: https://dedicatedpresentation.com/dukane-mcs350-paging-and-intercom-system-service

I will keep that in mind! My only issue with the ACC4D and ACC5 was them removing the mercury switch from the handset and putting a hook switch in the cradle. The mercury switch for the speakerphone was one of the cool features of these units! That, and the weird keypad redesign on the 5 where the color coding doesn’t make much sense and the shift button looks out of place because of its size.

Thanks for all the help.

If you find an 80’s copy of that operation manual let me know!

This could be what you were looking for.

That is 110% what I was looking for!

Now it’s a matter of figuring out what model ACC that is and where to find one!

Also, any chance there’s a copy of the entire manual you uploaded those pages from kicking around on your computer?

PM sent.