Author Topic: whats the model number? 636 or 686???  (Read 984 times)

Offline Babybearjs

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whats the model number? 636 or 686???
« on: April 17, 2016, 08:11:50 PM »
OK guys... here you go.... I got 2 of these from Cliff. so, what's the proper model number? is it a 636 keyset, or a 686?
John

Offline TelePlay

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    • . . . times keep changin'
Re: whats the model number? 636 or 686???
« Reply #1 on: April 17, 2016, 08:14:17 PM »
Or 39-89?   ;)

unbeldi

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Re: whats the model number? 636 or 686???
« Reply #2 on: April 17, 2016, 08:26:12 PM »
My first inclination would be that 39-89 is the design or manufacturing week of the PCB, week 39 of 1989.

Victor Laszlo

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Re: whats the model number? 636 or 686???
« Reply #3 on: April 17, 2016, 08:29:21 PM »
Why not take a look at the practice for the phone that it came out of and see what the manufacturer says? It's probably this one: Cortelco (ITT) 256400-MBA-40M.
« Last Edit: April 17, 2016, 08:36:31 PM by Victor Laszlo »

unbeldi

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Re: whats the model number? 636 or 686???
« Reply #4 on: April 17, 2016, 08:40:47 PM »
Why not take a look at the practice for the phone that it came out of and see what the manufacturer says? It's probably this one: Cortelco (ITT) 256400-MBA-40M.

Yes, I do think this is an ITT part.

Offline Babybearjs

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Re: whats the model number? 636 or 686???
« Reply #5 on: April 17, 2016, 11:44:17 PM »
are you sure it not a 686E??
John