atcomsystems.ca/forum Forums TDM Business Telephone Systems Nortel Telephones & Systems DOC's...what's the diff?

I'm looking for a DOC to use with a maglock and an MICS, but found two numbers in my search:

NT8B79FE & NT8B79FB.

"E" Model looks a little dated (the units I remember installing previously) and is about $30 less.


"B" model appears a little more "modernized".



Same guts/function?

The second pic is of an AT&T door phone controller used with Merlin systems. I'm sure your part numbers are right, but the bottom pic if definitely not corresponding to any of those p/n's

Hmm...that pic shows up in Google and on several websites when searching the part #. :confused: Can't find mention of the "B" model anywhere on the Nortel site.

Yes that bottom unit sure does show up on many NORTEL equipment web sites.

https://www.allnt.com/customer/product.php?productid=16519

https://www.nhtelecom.com/phone/Norstar-Door-Opening-Controller-16519.html

Would Nortel Web sites show picture of ATT Equipment? I don't think so, but I suppose it is possible........just not probable.

(PS - The top model is actually the "B" unit
and the bottom model is actually the "E" unit.

OK, so...bottom line...they're both the same. One is a newer production #?

Danny, I don't think so. Nortel is not modifying any existing hardware now. The last think they did on Norstar is Rel. 7.1 Software to accommodate new time change. I think that AT&T Door controller came by mistake on that side because the old AT&T part number almost the same as new Norstar number for Door controller.

FA = Norstar only

FB & FE for both Norstar & BST systems

I have to assume FE is new model of FB and probably looks the same as FB.

I could be wrong, though.

I tend to agree.

But I think that picture of the FB looks wrong, also I think it looks older not newer.

If I recall the older ones before BCM were close to that picture but narrower in width and more slanted in the front? been 12 years at least since I installed one.